Weather Prediction Center

National Oceanic and Atmospheric Administration

Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
312 PM EDT Mon Jun 09 2025

Valid 00Z Tue Jun 10 2025 - 00Z Thu Jun 12 2025

...Showers and thunderstorms from Texas through the Southeast...

...Record heat in the Northwest will ease a bit by midweek; cool
temperatures in the Northeast will moderate...

A pair of frontal boundaries will generally be the focus for showers and
thunderstorms the next couple of days. The northern system will push
through the Northern Plains tonight and into the Upper Midwest tomorrow
(Tuesday) and Great Lakes on Wednesday. Rainfall will generally be light
except within thunderstorms that may develop, especially over eastern
Montana and into the Corn Belt. The southern system will have more
moisture at its disposal and will see much higher rainfall totals over a
larger area. Texas will be the focus for showers/storms through Wednesday
as the stationary front separates cooler air over northern areas and very
hot temperatures over South Texas. The front extends eastward into the
Carolinas where some heavier rainfall is possible this evening and perhaps
overnight. Flash flooding is possible where heavier rainfall occurs,
especially in urban areas but also where it has been wet recently.

Over the Northwest, record heat today and Tuesday will pose an increased
risk for heat-related illnesses. Take precaution during the warmest part
of the day. High temperatures will soar well into the 90s and low 100s
over the interior and lower elevations away from the water. In addition,
breezy conditions pose an increased fire weather risk. Tuesday will still
see some new or near record highs from Spokane to Boise to Reno and
possibly into Las Vegas. Regardless, HeatRisk values will be Moderate over
northern areas and major over the Southwest Deserts (Death Valley may
near/exceed 120F). Extreme heat warnings are in effect through Tuesday for
the lower elevations. Over the Northeast, clouds and showers today will
give way to drier and warmer weather Tuesday and especially Wednesday as
readings climb back into the 80s.

Fracasso

Graphics available at
https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php

Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
255 PM EDT Mon Jun 9 2025

Valid 12Z Thu Jun 12 2025 - 12Z Mon Jun 16 2025


...Heavy rain and flash flood threat for the south-central U.S.
through Friday...


...Overview...

A front draped west to east next week across the southern tier
will continue to focus heavy rainfall and flash flooding through at
least Friday, especially across portions of Texas, Oklahoma, and
into the lower Mississippi Valley. Northern stream energy will
support moderate to heavy rainfall across the Northern Rockies to
Upper Midwest, with rainfall increasing in coverage by next weekend
across the Ohio Valley into the East ahead of northern and
southern stream energy convergence. Troughing over the West Coast
will be periodically renewed by shortwaves rounding the base of a
larger upper low, with above normal temperatures expected to
prevail for interior portions of the West underneath upper ridging.


...Guidance/Predictability Assessment...

Updated guidance is in generally good agreement on the overall
pattern late this week and headed into the weekend. All the latest
00/06Z deterministic guidance at the start of the period (Thursday
June 12) show a split stream pattern, with an upper-level shortwave
departing the northeastern U.S., a shortwave under modest ridging
over the north- central U.S., and a deep upper low wavering around
the northeastern Pacific/southwest Canada in the northern stream;
and a subtropical ridge over the Southeast, upper- level shortwave
over the south- central U.S., and ridge over the Southwest in the
southern- stream. Expect a continued wet pattern over portions of
the south-central U.S. given the presence of this slow-moving
shortwave blocked by the southeastern ridge with very moist Gulf
flow in place, though with timing differences leading to greater
uncertainty in the exact location and amounts of precipitation late
week, even within the ensemble means. For the updated QPF
forecast, the 00Z ECMWF was used to increase values relative to the
NBM with the ECMWF amounts being closest to the consensus on
location from the ECens/GEFS means and the NBM compared to the GFS
and other guidance. This slow moving short- wave plus possible
additional rounds of energy and interaction with the north-central
U.S. shortwave also look to keep unsettled weather in the forecast
for much of the central/eastern U.S. heading into the weekend, with
little change in the overall pattern along/north of the
southeastern ridge. To the north and west, all guidance shows a
longer wave ridge building out of the Southwest over portions of
the Intermountain West/Rockies and into the north- central U.S.,
keeping a period of above-average temperatures in the forecast for
the Intermountain West. The greatest differences in both the
deterministic and mean guidance arise later in the period late this
weekend/early next week as one or more shortwaves emerge from the
upper-low over the northeastern Pacific. The location/duration of
this upper-low lingering in the vicinity overall is also uncertain,
with little run-to-run consistency in both the ECMWF and GFS. The
updated WPC forecast used a composite blend of the deterministic
guidance early to mid- forecast period given general agreement on
the large-scale details, with a rapid increase to favor the
ensemble means late in the period as uncertainty and lack of run-
to-run consistency grows with respect to the northeastern Pacific
upper-low and adjacent pattern over the U.S.



...Weather/Hazards Highlights...

A frontal boundary draped generally west to east across the South
will continue to provide focus for numerous showers and
thunderstorms through most of this week. Guidance continues to
converge on Texas and surrounding states as seeing multiple rounds
of heavy rain, with parts of this area (from northern Texas
northward) already primed for flooding with wet antecedent
conditions from recent rainfall. A slight risk remains in place
across east-central Texas into Oklahoma for the Day 4/Thursday
Excessive Rainfall Outlook. An eventual need for a moderate risk in
future updates is not out of the question given the potential for
multiple inches of rain per recent QPF guidance, but there remains
enough uncertainty on location due to daily mesoscale details and
dependent on prior rainfall in the same location in the days
before. Guidance indicates the axis of heaviest rainfall will shift
slightly northeastward on Day 5/Friday, more into the Ark- la- Tex
region, with another Slight Risk ERO in place.

A shortwave interacting with a frontal boundary across the
northern tier will bring showers and storms across parts of the
northern Rockies into the Upper Midwest. Moisture anomalies should
be above the 90th percentile in Montana through Thursday, while
convection rides along the cusp of the instability gradient. This
supports a Marginal Risk on the Thursday ERO, which also stretches
eastward into the Upper Midwest along the front. A marginal risk
was introduced Day 5 for parts of the Upper Great Lakes region. By
late week and next weekend, combining upper level and frontal
features will allow for rainfall spreading into the east- central
and eastern U.S., with a general focus around the middle
Mississippi/Ohio Valleys into the northern Mid-Atlantic, but with
ample spread in the details at this point.

Above normal temperatures will continue across interior parts of
the West through much of the period. Daytime highs generally could
be 10 to 15 degrees above normal and may spread gradually eastward
with time. Some locally more intense heat looks to build into
portions of the southwestern U.S. late this weekend and into early
next week. Otherwise, the rest of the country looks near normal or
within a few degrees of normal depending on quick systems moving
through.


Putnam/Santorelli


Additional 3-7 Day Hazard information can be found on the WPC
medium range hazards outlook chart at:
https://www.wpc.ncep.noaa.gov/threats/threats.php

WPC medium range 500mb heights, surface systems, weather grids,
quantitative precipitation forecast (QPF), excessive rainfall
outlook (ERO), winter weather outlook (WWO) probabilities, heat
indices, and Key Messages can be accessed from:

https://www.wpc.ncep.noaa.gov/medr/5dayfcst500_wbg.gif
https://www.wpc.ncep.noaa.gov/medr/5dayfcst_wbg_conus.gif
https://www.wpc.ncep.noaa.gov/5km_grids/5km_gridsbody.html
https://www.wpc.ncep.noaa.gov/qpf/day4-7.shtml
https://www.wpc.ncep.noaa.gov/#page=ero
https://www.wpc.ncep.noaa.gov/wwd/pwpf_d47/pwpf_medr.php?day=4
https://www.wpc.ncep.noaa.gov/heat_index.shtml
https://www.wpc.ncep.noaa.gov/#page=ovw

Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
319 AM EDT Mon Jun 9 2025

Valid 00Z Tue 10 Jun 2025 - 00Z Tue 17 Jun 2025

Early week upper ridging over Hawaii and surface high pressure
well to the north will keep trade winds generally weak with just
the typical light showers for windward facing slopes. An upper
trough will establish to the west of the state by mid week
allowing for an increase in trade speeds and shifting to a more
southeasterly direction. Breezy trade winds will continue into
early next week as surface high pressure and upper ridging fills
in north of the state again.

Santorelli

Excessive Rainfall Discussion
NWS Weather Prediction Center College Park MD
1159 AM EDT Mon Jun 9 2025
Day 1
Valid 16Z Mon Jun 09 2025 - 12Z Tue Jun 10 2025

...THERE IS A SLIGHT RISK OF EXCESSIVE RAINFALL FOR PORTIONS OF THE
NORTHEAST, SOUTHEAST, GULF COAST, AND SOUTHERN PLAINS...

16Z Update...
Expanded Slight in west Texas
Added a Slight around the Houston metro.

...Northeast...
Occluded low over Wisconsin this morning will track northeast over
the U.P. of Michigan tonight. South and east of the low, upper
level divergence and forcing will be maximized as a 100 kt jet
streak and enhanced divergence from a shortwave rounding the
southern side of the low will increase the forcing for thunderstorms
in the Slight Risk area of Pennsylvania and western New York. At
the surface, a potent cold front will be moving east from the Great
Lakes/Midwest and into Pennsylvania and New York. The front will
contribute additional forcing for storms. Somewhat limited Gulf
moisture will stream northward ahead of the front, raising PWATs up to
1.5 inches (1.5 sigma above normal). Instability will also
increase with daytime heating with MUCAPE values between 500 and
1,500 J/kg, with the greatest instability into Pennsylvania.

12Z CAMs generally agree that the current activity moving from Ohio
intensifies diurnally across PA and NY. Soil moisture is elevated
from recent rains, though storms will be quick- moving, which
should temper the flash flooding threat somewhat. However,
topographic and urbanized concerns warrants maintenance of the
Slight Risk with some further trimming out on the eastern side in
NY per coordination with WFO BTV.

...Southeast...
Multiple rounds of heavy thunderstorms are expected to traverse
across the Southeast through. Ample Gulf moisture is being supplied
on strong (30kt) low level flow with as PWATs 1.75 to 2 inches
over MS/AL/GA where activity should focus/repeat. Meanwhile, a
potent shortwave at the base of the trough currently over the
lower-mid Miss River and cold pool interactions from ongoing
activity will force additional convection. As the shortwave crosses
the Southeast this evening, the storms should evolve upscale from
random clusters to lines. As the surface cold front begins to
stall, backbuilding storms will become increasingly possible in
many of the same areas of southern Mississippi to the western
Florida Panhandle that saw convective activity this morning.

Widely scattered instances of flash flooding can be expected inland
from the central Gulf Coast where a Slight Risk is maintained.

...Texas and New Mexico...
12Z CAMs continue to ramp up convective activity today developing
this afternoon off the southern Rockies with organized thunderstorm
clusters shifting southeast over west into central TX overnight.
Much of this activity is west/south of heavy precip from recent
days, but given Gulf-sourced moisture extending up through west
Texas (1.5 sigma above normal) and high instability, the Slight
Risk is maintained and expanded a bit more into central Texas for
overnight concerns.

Furthermore, a boundary around the Houston metro activates this
afternoon with a risk for repeating heavy thunderstorms there. A
Slight Risk was raised around the greater Houston metro.

Wegman/Jackson

Day 1 threat area: www.wpc.ncep.noaa.gov/qpf/94epoints.txt

Excessive Rainfall Discussion
NWS Weather Prediction Center College Park MD
1159 AM EDT Mon Jun 9 2025
Day 2
Valid 12Z Tue Jun 10 2025 - 12Z Wed Jun 11 2025

...THERE IS A SLIGHT RISK OF EXCESSIVE RAINFALL FOR SOUTHEASTERN
NEW MEXICO INTO MUCH OF WEST TEXAS...

Yet another round of widespread heavy shower and thunderstorm
activity will impact much of far southeastern New Mexico and west
Texas again Tuesday and Tuesday night. While some lingering storms
will be ongoing at the start of the period in parts of the Hill
Country of central Texas, the bulk of the activity will be during
the late afternoon into the overnight. Maximum daytime heating
across the area will increase the instability across much of west
Texas as abundant Gulf moisture remains over the area south of a
stationary front over northern Texas. Storms will blossom in
coverage towards sunset as the LLJ of additional Gulf moisture
strengthens. The convection will both interact with the stationary
front, a possible dryline in southeastern NM and far west Texas,
and some subtle, but still important upper level impulses that
eject out of the southern Rockies.

There has been little change in the ERO risk areas as the signal
remains consistent targeting west Texas for shower and storm
activity. The Slight remains quite large in part due to the
widespread area of west Texas that has seen heavy rain recently,
resulting in wetter than normal soils, especially north towards the
Panhandle.

The Marginal Risk along the Gulf Coast and eastern seaboard also
remains largely unchanged. Storms will be ongoing into New England
at the start of the period, with some chance for largely
disorganized convection from the Gulf Coast to the Carolinas. While
some of these areas have also been hard hit with heavy rains in
recent days, the lack of confidence in much organization to the
storms favors a continuation of the Marginal Risk. Cell
interactions will likely cause localized Slight Risk impacts along
the Gulf Coast, but where that will happen remains highly
uncertain.

Wegman

Day 2 threat area: www.wpc.ncep.noaa.gov/qpf/98epoints.txt

Excessive Rainfall Discussion
NWS Weather Prediction Center College Park MD
1159 AM EDT Mon Jun 9 2025
Day 3
Valid 12Z Wed Jun 11 2025 - 12Z Thu Jun 12 2025

...THERE IS A SLIGHT RISK OF EXCESSIVE RAINFALL FOR PORTIONS OF
TEXAS AND OKLAHOMA...

Deep Gulf moisture will advect north across much of Texas (and the
Southeast for that matter) on Wednesday and Wednesday night. Slow-
moving upper level shortwave energy will shift east across Texas
through the period. The stationary front that had been across north
Texas for much of the prior 2 days will begin to lift north as a
warm front, especially Wednesday night as the nocturnal
strengthening of the LLJ overcomes what little southward push of
drier air north of the front is left. Meanwhile across West Texas,
the typical dry line will also advance eastward, which will work to
uplift the moisture and cause more widespread shower and
thunderstorm activity. While the storms may be around in isolated
clusters through the day, the greatest concentration of storms will
initiate in the late afternoon and persist through the overnight.
Many of the same areas of northern Texas will be hit with multiple
rounds of storms once again. A higher-end Slight is in effect from
east of Lubbock through the Metroplex, and from southwestern
Oklahoma to around the Austin metro. It's very possible that a
Moderate Risk upgrade may be needed for a portion of this area with
increasing confidence and CAMs analysis of the convective scenario.
Once again, the storms alone would not quite get the risk to a
Moderate level, but the combination of the storms and antecedent
very wet soil conditions.

Up north towards the MN/IA border and southern WI, a subtle
shortwave in the jet will interact with a weaker portion of the LLJ
which will run into a drier air mass to the north. Showers and
storms may train eastward across this region. However, instability
will be a tremendous limiting factor in the potential for flash
flooding. Soils are at or below normal for moisture in the area,
which also will not help with flash flooding potential. A Marginal
Risk remains in effect with few changes.

The Marginal risk in Montana was also maintained with a small
eastward expansion towards the border of ND. Areas of convection
will cross MT through the period, but will be few and far between.
Low FFGs in this area could allow for isolated instances of flash
flooding where there are favorable cell interactions.

Wegman

Day 3 threat area: www.wpc.ncep.noaa.gov/qpf/99epoints.txt

Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
255 PM EDT Mon Jun 9 2025


A frontal boundary draped generally west to east across the South
will continue to provide focus for numerous showers and
thunderstorms through most of this week. Guidance continues to
converge on Texas and surrounding states as seeing multiple rounds
of heavy rain, with parts of this area (from northern Texas
northward) already primed for flooding with wet antecedent
conditions from recent rainfall. A slight risk remains in place
across east-central Texas into Oklahoma for the Day 4/Thursday
Excessive Rainfall Outlook. An eventual need for a moderate risk in
future updates is not out of the question given the potential for
multiple inches of rain per recent QPF guidance, but there remains
enough uncertainty on location due to daily mesoscale details and
dependent on prior rainfall in the same location in the days
before. Guidance indicates the axis of heaviest rainfall will shift
slightly northeastward on Day 5/Friday, more into the Ark- la- Tex
region, with another Slight Risk ERO in place.

A shortwave interacting with a frontal boundary across the
northern tier will bring showers and storms across parts of the
northern Rockies into the Upper Midwest. Moisture anomalies should
be above the 90th percentile in Montana through Thursday, while
convection rides along the cusp of the instability gradient. This
supports a Marginal Risk on the Thursday ERO, which also stretches
eastward into the Upper Midwest along the front. A marginal risk
was introduced Day 5 for parts of the Upper Great Lakes region. By
late week and next weekend, combining upper level and frontal
features will allow for rainfall spreading into the east- central
and eastern U.S., with a general focus around the middle
Mississippi/Ohio Valleys into the northern Mid-Atlantic, but with
ample spread in the details at this point.

Above normal temperatures will continue across interior parts of
the West through much of the period. Daytime highs generally could
be 10 to 15 degrees above normal and may spread gradually eastward
with time. Some locally more intense heat looks to build into
portions of the southwestern U.S. late this weekend and into early
next week. Otherwise, the rest of the country looks near normal or
within a few degrees of normal depending on quick systems moving
through.


Putnam/Santorelli

Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
255 PM EDT Mon Jun 9 2025


A frontal boundary draped generally west to east across the South
will continue to provide focus for numerous showers and
thunderstorms through most of this week. Guidance continues to
converge on Texas and surrounding states as seeing multiple rounds
of heavy rain, with parts of this area (from northern Texas
northward) already primed for flooding with wet antecedent
conditions from recent rainfall. A slight risk remains in place
across east-central Texas into Oklahoma for the Day 4/Thursday
Excessive Rainfall Outlook. An eventual need for a moderate risk in
future updates is not out of the question given the potential for
multiple inches of rain per recent QPF guidance, but there remains
enough uncertainty on location due to daily mesoscale details and
dependent on prior rainfall in the same location in the days
before. Guidance indicates the axis of heaviest rainfall will shift
slightly northeastward on Day 5/Friday, more into the Ark- la- Tex
region, with another Slight Risk ERO in place.

A shortwave interacting with a frontal boundary across the
northern tier will bring showers and storms across parts of the
northern Rockies into the Upper Midwest. Moisture anomalies should
be above the 90th percentile in Montana through Thursday, while
convection rides along the cusp of the instability gradient. This
supports a Marginal Risk on the Thursday ERO, which also stretches
eastward into the Upper Midwest along the front. A marginal risk
was introduced Day 5 for parts of the Upper Great Lakes region. By
late week and next weekend, combining upper level and frontal
features will allow for rainfall spreading into the east- central
and eastern U.S., with a general focus around the middle
Mississippi/Ohio Valleys into the northern Mid-Atlantic, but with
ample spread in the details at this point.

Above normal temperatures will continue across interior parts of
the West through much of the period. Daytime highs generally could
be 10 to 15 degrees above normal and may spread gradually eastward
with time. Some locally more intense heat looks to build into
portions of the southwestern U.S. late this weekend and into early
next week. Otherwise, the rest of the country looks near normal or
within a few degrees of normal depending on quick systems moving
through.


Putnam/Santorelli

Probabilistic Heavy Snow and Icing Discussion
NWS Weather Prediction Center College Park MD
214 PM EDT Wed May 7 2025

Valid 00Z Thu May 08 2025 - 00Z Sun May 11 2025


...Colorado...
Day 1...

Lingering vorticity on the western side of the departing upper low
will still trigger some light snow over the San Juans this evening
before tapering off tonight/early Thursday. WPC probabilities for
at least an additional 4 inches of snow after 00Z are low (10-40%)
above 11,000ft.

For days 2-3, the probability of at least 4 inches of snow is less
than 10%.

The probability of significant freezing rain across the CONUS is
less than 10%.

Note - this is the last regularly scheduled discussion (QPFHSD)
for the 2024-2025 winter season. Unless a significant winter
weather threat emerges, this discussion will next be updated on or
about September 25, 2025.


Fracasso

Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
255 PM EDT Mon Jun 9 2025

Valid 12Z Thu Jun 12 2025 - 12Z Mon Jun 16 2025


...Heavy rain and flash flood threat for the south-central U.S.
through Friday...


...Overview...

A front draped west to east next week across the southern tier
will continue to focus heavy rainfall and flash flooding through at
least Friday, especially across portions of Texas, Oklahoma, and
into the lower Mississippi Valley. Northern stream energy will
support moderate to heavy rainfall across the Northern Rockies to
Upper Midwest, with rainfall increasing in coverage by next weekend
across the Ohio Valley into the East ahead of northern and
southern stream energy convergence. Troughing over the West Coast
will be periodically renewed by shortwaves rounding the base of a
larger upper low, with above normal temperatures expected to
prevail for interior portions of the West underneath upper ridging.


...Guidance/Predictability Assessment...

Updated guidance is in generally good agreement on the overall
pattern late this week and headed into the weekend. All the latest
00/06Z deterministic guidance at the start of the period (Thursday
June 12) show a split stream pattern, with an upper-level shortwave
departing the northeastern U.S., a shortwave under modest ridging
over the north- central U.S., and a deep upper low wavering around
the northeastern Pacific/southwest Canada in the northern stream;
and a subtropical ridge over the Southeast, upper- level shortwave
over the south- central U.S., and ridge over the Southwest in the
southern- stream. Expect a continued wet pattern over portions of
the south-central U.S. given the presence of this slow-moving
shortwave blocked by the southeastern ridge with very moist Gulf
flow in place, though with timing differences leading to greater
uncertainty in the exact location and amounts of precipitation late
week, even within the ensemble means. For the updated QPF
forecast, the 00Z ECMWF was used to increase values relative to the
NBM with the ECMWF amounts being closest to the consensus on
location from the ECens/GEFS means and the NBM compared to the GFS
and other guidance. This slow moving short- wave plus possible
additional rounds of energy and interaction with the north-central
U.S. shortwave also look to keep unsettled weather in the forecast
for much of the central/eastern U.S. heading into the weekend, with
little change in the overall pattern along/north of the
southeastern ridge. To the north and west, all guidance shows a
longer wave ridge building out of the Southwest over portions of
the Intermountain West/Rockies and into the north- central U.S.,
keeping a period of above-average temperatures in the forecast for
the Intermountain West. The greatest differences in both the
deterministic and mean guidance arise later in the period late this
weekend/early next week as one or more shortwaves emerge from the
upper-low over the northeastern Pacific. The location/duration of
this upper-low lingering in the vicinity overall is also uncertain,
with little run-to-run consistency in both the ECMWF and GFS. The
updated WPC forecast used a composite blend of the deterministic
guidance early to mid- forecast period given general agreement on
the large-scale details, with a rapid increase to favor the
ensemble means late in the period as uncertainty and lack of run-
to-run consistency grows with respect to the northeastern Pacific
upper-low and adjacent pattern over the U.S.



...Weather/Hazards Highlights...

A frontal boundary draped generally west to east across the South
will continue to provide focus for numerous showers and
thunderstorms through most of this week. Guidance continues to
converge on Texas and surrounding states as seeing multiple rounds
of heavy rain, with parts of this area (from northern Texas
northward) already primed for flooding with wet antecedent
conditions from recent rainfall. A slight risk remains in place
across east-central Texas into Oklahoma for the Day 4/Thursday
Excessive Rainfall Outlook. An eventual need for a moderate risk in
future updates is not out of the question given the potential for
multiple inches of rain per recent QPF guidance, but there remains
enough uncertainty on location due to daily mesoscale details and
dependent on prior rainfall in the same location in the days
before. Guidance indicates the axis of heaviest rainfall will shift
slightly northeastward on Day 5/Friday, more into the Ark- la- Tex
region, with another Slight Risk ERO in place.

A shortwave interacting with a frontal boundary across the
northern tier will bring showers and storms across parts of the
northern Rockies into the Upper Midwest. Moisture anomalies should
be above the 90th percentile in Montana through Thursday, while
convection rides along the cusp of the instability gradient. This
supports a Marginal Risk on the Thursday ERO, which also stretches
eastward into the Upper Midwest along the front. A marginal risk
was introduced Day 5 for parts of the Upper Great Lakes region. By
late week and next weekend, combining upper level and frontal
features will allow for rainfall spreading into the east- central
and eastern U.S., with a general focus around the middle
Mississippi/Ohio Valleys into the northern Mid-Atlantic, but with
ample spread in the details at this point.

Above normal temperatures will continue across interior parts of
the West through much of the period. Daytime highs generally could
be 10 to 15 degrees above normal and may spread gradually eastward
with time. Some locally more intense heat looks to build into
portions of the southwestern U.S. late this weekend and into early
next week. Otherwise, the rest of the country looks near normal or
within a few degrees of normal depending on quick systems moving
through.


Putnam/Santorelli


Additional 3-7 Day Hazard information can be found on the WPC
medium range hazards outlook chart at:
https://www.wpc.ncep.noaa.gov/threats/threats.php

WPC medium range 500mb heights, surface systems, weather grids,
quantitative precipitation forecast (QPF), excessive rainfall
outlook (ERO), winter weather outlook (WWO) probabilities, heat
indices, and Key Messages can be accessed from:

https://www.wpc.ncep.noaa.gov/medr/5dayfcst500_wbg.gif
https://www.wpc.ncep.noaa.gov/medr/5dayfcst_wbg_conus.gif
https://www.wpc.ncep.noaa.gov/5km_grids/5km_gridsbody.html
https://www.wpc.ncep.noaa.gov/qpf/day4-7.shtml
https://www.wpc.ncep.noaa.gov/#page=ero
https://www.wpc.ncep.noaa.gov/wwd/pwpf_d47/pwpf_medr.php?day=4
https://www.wpc.ncep.noaa.gov/heat_index.shtml
https://www.wpc.ncep.noaa.gov/#page=ovw