Weather Prediction Center

National Oceanic and Atmospheric Administration

Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
406 PM EDT Thu May 26 2022

Valid 00Z Fri May 27 2022 - 00Z Sun May 29 2022

...There is a Moderate Risk of excessive rainfall over parts of the
Central Gulf Coast through Friday morning...

...There is a Slight Risk of severe storms over parts of the
Ohio/Tennessee Valleys to the Central Gulf Coast and the Southeast through
Friday morning...

... There is a Slight Risk of severe storms and excessive rainfall over
parts of the Mid-Atlantic from Friday to Saturday morning...

On Thursday night, a front extending from the Great Lakes, Middle
Mississippi Valley to the Central Gulf Coast will move eastward to the
East Coast by Saturday. Showers and thunderstorms will develop along and
ahead of the boundary through Saturday. In addition, the front and
moisture pooling along the boundary will destabilize the atmosphere.
Therefore, the SPC has issued a Slight Risk of severe thunderstorms over
parts of the Ohio/Tennessee Valleys to the Central Gulf Coast and the
Southeast through Friday morning. The hazards associated with these
thunderstorms are frequent lightning, severe thunderstorm wind gusts,
hail, and a few tornadoes.

In addition, showers and thunderstorms develop along the boundary from the
Midwest to the Central Gulf Coast. Therefore, the WPC has issued a
Moderate Risk of excessive rainfall over the Central Gulf Coast through
Friday morning. The associated heavy rain will create numerous areas of
flash flooding. Furthermore, many streams may flood, potentially affecting
larger rivers through Friday morning. In addition, Slight Risk of
excessive rainfall over portions of the Central Gulf Coast,
Central/Southern Appalachians, and a second area over parts of the Upper
Great Lakes/Upper Mississippi Valley through Friday morning, too. Again,
the associated heavy rain will create mainly localized areas of flash
flooding, with urban areas, roads, and small streams the most vulnerable.

On Friday, the front continues to inch eastward. As a result, showers and
thunderstorms will develop from the Northeast to the Southeast and Gulf
Coast. In addition, there will be severe thunderstorms associated with the
boundary. Therefore, the SPC has issued a Slight Risk of severe
thunderstorms over parts of the Mid-Atlantic from Friday into Saturday
morning. Furthermore, heavy rain will be associated with the
thunderstorms. Therefore, the WPC has issued a Slight Risk of excessive
rainfall over Mid-Atlantic from Friday into Saturday morning. On Saturday,
showers and thunderstorms will continue over the Northeast/Mid-Atlantic
Coast and the Florida Peninsula.

Additionally, by Friday evening, a front and associated upper-level trough
will move onshore over the Pacific Northwest, moving eastward to the
Northern High Plains/Great Basin. The trough is relatively robust.
Therefore, the SPC has issued a Slight Risk of severe thunderstorms over
parts of the Pacific Northwest/Northern Intermountain Region through
Friday morning. The hazards associated with these thunderstorms are
frequent lightning, severe thunderstorm wind gusts, hail, and a minimal
threat for tornadoes.

On Friday, the showers and thunderstorms will continue over parts of the
Northern High Plains and Northern Plains. By Saturday, the front moves to
the Upper Mississippi Valley and the threat of severe thunderstorms
develops over the Upper Midwest. Therefore, the SPC has issued a Slight
Risk of severe thunderstorms over parts of the Northern/Central Plains and
a portion of the Upper Mississippi Valley on Saturday. The hazards
associated with these thunderstorms are frequent lightning, severe
thunderstorm wind gusts, hail, and a few tornadoes.

Ziegenfelder


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

Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
418 PM EDT Thu May 26 2022

Valid 12Z Sun May 29 2022 - 12Z Thu Jun 02 2022

...Potential for heavy precipitation next week from the northern
Rockies to Upper Midwest and then southward to the Central
Plains...

...Weather Pattern Overview...

Latest guidance continues to show an evolution toward an amplified
western trough/eastern ridge aloft Sunday-Tuesday, with the
western trough likely most amplified around Monday and the eastern
ridge strongest around Tuesday. Consensus then shows a rapid
flattening of the mean pattern as the western energy ejects and
southern tier ridging retrogrades to some degree. By Thursday an
approaching eastern Pacific trough may even support a weak upper
ridge over the Interior West. The initial amplified
pattern/western upper dynamics will support potential for some
areas of heavy precipitation from the northern Rockies into the
Plains/Upper Midwest, followed by a transition to more emphasis
for heavy rainfall over the central Plains as a wavy front begins
to push southeastward. An area of very cool temperatures will
progress through the West into the northern Plains early in the
week and then modify as it reaches the rest of the Plains.
Meanwhile very warm to hot weather initially over the
Plains/Midwest will shift into the northern half to two-thirds of
the eastern U.S. Duration of warm temperatures over the Northeast
is a question mark however, as flow around a broad upper low over
eastern Canada may push a front into/through the region.

...Model Guidance and Preferences...

The updated forecast accounting for 00Z/06Z guidance started with
an operational model composite (more GFS component from the 00Z
versus 06Z run) early in the period and then trended toward 50-60
percent total 06Z GEFS/00Z ECMWF mean input as specifics became
increasingly uncertain. There are various aspects of the forecast
that have been exhibiting spread/trends over recent runs. Issues
with the western trough involve how Sunday-Monday energy will
ultimately eject from the trough, with peripheral influence from
Pacific flow (just offshore the Pacific Northwest as well as
upstream) plus central Canada troughing/possible embedded low that
have become more pronounced in latest runs and may interact with
the ejecting energy. In general the primary trend over the past
couple days has been for the western energy to eject a bit faster,
but with no real consensus yet for the details. The past couple
UKMET runs have been rather extreme with the speed of upstream
Pacific flow and southeastward amplitude of troughing that
eventually reaches the Plains (the latter being an error in some
UKMET runs with a prior ejecting feature around a couple weeks
ago). At the same time most guidance has generally trended more
pronounced with flow around an upper low crossing far eastern
Canada, bringing a better defined cold front through parts of the
Northeast and perhaps stalling this front for a time somewhere
between the northern Mid-Atlantic and New England (with a lot of
spread in the guidance at this time). The 06Z GFS compared more
poorly to consensus for the upper low track/cyclonic flow
amplitude versus the 00Z run or most other guidance. The 12Z GFS
returned somewhat closer to the majority. By next Thursday there
is decent agreement on a more progressive/low amplitude shortwave
over the Upper Midwest pushing along the central U.S. front from
earlier in the week, while a weak upper ridge reaches the West.

...Sensible Weather/Threat Highlights...

From Sunday into the early part of the next work week, the upper
low moving over the parts of the West along with areas of low
level upslope flow should combine to generate a period of moderate
to heavy precipitation over the northern Rockies and High Plains
while a slowly moving wavy frontal system over the Plains could
help to focus locally heavy rainfall as far east as the Upper
Midwest. Currently expect heaviest totals over parts of Montana
and northern Wyoming with significant snowfall possible in higher
elevations of the Rockies. The Storm Prediction Center is also
monitoring the potential for severe weather over parts of the
Plains/Upper Midwest in the Sunday-Monday time frame. Toward
midweek the flatter trend for the upper pattern should begin to
push the Plains front southeastward, likely shifting the emphasis
for heaviest rainfall into or near the central Plains. The
extreme southern tier including Florida may see some scattered
diurnally favored convection, aided by energy aloft to the south
of the eastern U.S. upper ridge. Parts of the Northeast could see
one or more episodes of rainfall with a cold front that moves
into/through the region and possibly stalls for a time over New
England or the northern Mid-Atlantic. Some rainfall could be
locally moderate to heavy but with low confidence in details thus
far.

Warmest temperature anomalies on Sunday will extend from the
southern High Plains into the Midwest, with some locations up to
10-20F above normal. Parts of the central/southern Plains may see
the very warm to hot weather persist into early next week but
otherwise the emphasis for heat will shift more into the northern
half to two-thirds of the East with a broad area of plus 10-20F
anomalies and perhaps some daily records, more for morning lows
versus daytime highs. The front over the Northeast may bring a
cooling trend to parts of that region though. On the other hand,
well below normal temperatures will push across the West into the
northern Plains Sunday onward, with a broad area of highs 10-20F
below normal Sunday-Tuesday. Some lingering minus 10-15F
anomalies are possible into Wednesday over the northern-central
Plains but further moderation is likely thereafter. A warmer
trend over the West will bring moderately above normal highs into
the region by Wednesday-Thursday.

Rausch

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


Hazards:
- Heavy precipitation across portions of the Northern
Plains/Rockies, and the Northern Great Basin,
Sun-Mon, May 29-May 30.
- Heavy rain across portions of the Pacific Northwest, Sun, May 29.
- Heavy rain across portions of the Central/Northern Plains, and
the Northern Rockies, Sun-Mon, May
29-May 30.
- Heavy rain across portions of the Central Plains, Tue-Wed, May
31-Jun 1.
- Severe weather across portions of the Central/Northern Plains,
and the Middle/Upper Mississippi
Valley, Sun, May 29.
- Severe weather across portions of the Central/Northern Plains,
the Middle/Upper Mississippi
Valley, Mon, May 30.
- Flooding possible across portions of the Central Plains.
- Flooding occurring or imminent across portions of the Upper
Mississippi Valley and the Northern
Plains.
- Flooding likely across portions of the Southern Plains.
- Excessive heat across portions of the Southern Plains, Sun, May
29.
- High winds across portions of the Central Plains/Rockies/Great
Basin, the Southern
Rockies/Plains, and the Southwest, Sun-Mon, May 29-May 30.
- Enhanced wildfire risk across portions of the Southern Rockies,
the Central/Southern Plains, and
the Southwest, Sun-Mon, May 29-May 30.


WPC medium range 500mb heights, surface systems, weather grids,
quantitative precipitation, experimental excessive rainfall
outlook, winter weather outlook probabilities and heat indices are
at:

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

Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
208 AM EDT Thu May 26 2022

Valid 00Z Fri May 27 2022 - 00Z Fri Jun 3 2022

The main subtropical high will be situated generally northeast of
Hawaii, with a trailing front from a low pressure system well to
the north approaching the far northwestern Islands by Saturday.
This boundary will likely persist in that general region through
the weekend and then wash out by Monday. Meanwhile, an upper
ridge builds east of the Big Island by next weekend and early next
week with good support from the ensemble means.

In terms of sensible weather, mainly scattered showers and typical
terrain enhancements are expected across the Islands with winds
generally out of the east at 10-20 mph on most days, with perhaps
some ESE flow at times. Locally heavy rain is possible for the
eastern slopes of the Big Island, but elsewhere no organized major
heavy rainfall events are anticipated over the next week as deep
tropical moisture remains generally well to the south through the
period, and moisture near the previously mentioned front likely
stays northwest of most of the Islands.

Hamrick

Excessive Rainfall Discussion
NWS Weather Prediction Center College Park MD
408 PM EDT Thu May 26 2022

Day 1
Valid 1900Z Thu May 26 2022 - 12Z Fri May 27 2022

...A MODERATE RISK OF EXCESSIVE RAINFALL EXISTS ACROSS PORTIONS OF
THE CENTRAL GULF COAST...

...19Z Update...
Introduced a Slight Risk area over portions of northern Illinois
extending into southern Wisconsin. Convection was building over
western Illinois and will be tracking over areas that have become
more hydrologically sensitive due to several days of rainfall.
Concern is that the environment will become somewhat more
supportive of higher rainfall rates as shown by some of the recent
runs of the higher resolution CAM guidance. See WPC Mesoscale
Precipitation Discussion for additional details.

Bann


16Z Update: Began to trim away some of the western extent of the
Moderate and Slight Risk areas in the central Gulf Coast region
were the heavy rainfall threat has translated farther east and
additional redevelopment is not expected. But overall, did not
introduce any large-scale changes to the previous risk areas that
extend from the Gulf Coast northeastward into the southern
Appalachians.

Pereira

...Gulf Coast...
Another round of convection appears likely this morning/afternoon
across portions of the central Gulf Coast. The front remains well
to the west, and we should see better moisture/instability advect
back northward into the region this morning. As the better
synoptic ascent ahead of the trough and in the right entrance of
the upper jet moves over these areas convection should regenerate.
Expect that we will see a well organized area of convection
traverse the region from west to east...with some
training/backbuilding along coastal areas. An additional 3"+ of
rainfall is possible, with localized 5"+ amounts. Recent rainfall
over much of this area has saturated soils and elevated
streamflows...thus this additional rainfall will likely result in
scattered to numerous areas of flash flooding over portions of
southern MS and the FL Panhandle. We will maintain the Moderate
risk in the ERO, with some expansion off to the east to cover
areas hardest hit with rain over the past 24 hours.

...Ohio Valley and Southern Appalachians...
A good signal for heavy rainfall over portions of the southern
Appalachians today and tonight. The expectation is that we will
see multiple rounds of convection over the period, with each round
capable of dropping a quick 1-1.5" in an hour or less. The
multiple convective rounds combined with upslope enhancement to
the rainfall should result in a swath of 2-3" of rain, with
localized totals of 4-6" possible. Hydrologic conditions over this
area are more sensitive than normal...with above average soil
saturation and streamflows noted. Given this, we gave some
consideration to a MDT risk upgrade over portions of far northeast
GA into the western Carolinas. In the end opted to stick with a
Slight for now, as there is some lingering uncertainty on
convective details, and there very well might be enough of a break
in between convective rounds to keep the flooding
coverage/magnitudes in check. Nonetheless, scattered flash
flooding still appears probable, and would characterize this as a
higher end Slight risk at the moment.

Portions of the TN and OH Valley will have an isolated flash flood
risk today as convection moves across. A bit more progression to
the convection and more neutral hydrologic conditions should keep
the risk more isolated in nature...warranting just the Marginal
risk that is in place.

...Upper Midwest...
We did go ahead and expand the Marginal to the northwest to
include portions of eastern IA, northern IL, southern WI and
southern/central MI. This is north of the mid/upper level low and
within an area of weaker mean flow. Current forecasts indicate
pretty good instability along this corridor, which should should
support convective development, which combined with the slow cell
motions and stationary convergent axis...should support some cell
mergers and localized heavy rainfall totals today.

Chenard

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

Excessive Rainfall Discussion
NWS Weather Prediction Center College Park MD
408 PM EDT Thu May 26 2022

Day 2
Valid 12Z Fri May 27 2022 - 12Z Sat May 28 2022

...THERE IS A SLIGHT RISK OF EXCESSIVE RAINFALL IN THE EASTERN
UNITED STATES...

21Z Update: Extended the previous Slight Risk a little farther
south through southeastern NC into the Pee Dee region of South
Carolina. Consensus of the 12Z hi-res guidance shows ongoing
convection late in the Day 1 period, continuing into early Day 2
across the region, with a good signal for additional development
farther to the south training across the same area during the
afternoon. The extended Slight was drawn to include areas where
the 12Z HREF is showing high neighborhood probabilities for
accumulations of 2 inches or more.

Across the Northeast, extended the Marginal Risk farther to the
northeast to include portions of northern New York and New
England. Pooling moisture and unidirectional flow along a
slow-moving boundary may support training storms -- raising the
threat for locally heavy amounts. The 12Z HREF is showing a
significant signal for locally heavy amounts, especially across
northern Maine, with high neighborhood probabilities for
accumulations of 2 inches or more.

Pereira

...Eastern U.S....
Ahead of the slow moving closed mid/upper low and a surface
boundary advancing eastward during the day, warm/moist air will
quickly surge northward along the East Coast bringing precipitable
water values of 1.5-1.75", which is near 2 standard deviations
above normal for portions of the Mid-Atlantic. Peak heating will
allow for modest destabilization and MLCAPEs of 1500-2000 J/kg.
Soundings show unidirectional flow and surging low level flow at
850 mb. Convection should be somewhat progressive off to the east,
however there should be widespread/numerous showers/thunderstorms
with pockets of stronger clusters, and the mainly unidirectional
flow does support some south brief south/north training within the
eastward moving convective clusters. There is also the potential
for more than one round of storms as the better forcing looks to
lag the initial convective round. Potential exists for hourly
totals of 1-2" at times during the afternoon hours and these
storms are likely to fall along the urban corridor from central NC
to eastern PA/western NJ. Hydrologic conditions have started to
recover back closer to normal after a wet period...but nonetheless
neutral to slightly above average soil saturation/streamflows
should still exist over portions of the area on Friday morning. We
will maintain the Slight risk, with an isolated to scattered flash
flood risk possible.

...Great Lakes...
Added a small Marginal over southern MI this period. Slow moving
convection north of the closed mid/upper level low could pose a
localized heavy rainfall threat during the day Friday.

Chenard/Taylor

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

Excessive Rainfall Discussion
NWS Weather Prediction Center College Park MD
412 PM EDT Thu May 26 2022

Day 3
Valid 12Z Sat May 28 2022 - 12Z Sun May 29 2022

The probability of rainfall exceeding flash flood guidance is less
than 5 percent.

The environmental setup appears favorable for one or more
convective complexes over the Northern Plains Saturday and
Saturday night. We may eventually need a risk area somewhere over
this region...however uncertainty in location and the potential
progressive nature of any convective complex precludes any risk
area at the moment. We will continue to monitor.

Chenard

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

Probabilistic Heavy Snow and Icing Discussion
NWS Weather Prediction Center College Park MD
309 PM EDT Tue May 10 2022

Valid 00Z Wed May 11 2022 - 00Z Sat May 14 2022

***Regularly scheduled Heavy Snow/Ice Discussions have ended for
the 2021-2022 season from WPC***

--This discussion may be updated over the summer months should the
forecast warrant--

~~Discussions will resume on or around October 1, 2022~~

Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
418 PM EDT Thu May 26 2022

Valid 12Z Sun May 29 2022 - 12Z Thu Jun 02 2022

...Potential for heavy precipitation next week from the northern
Rockies to Upper Midwest and then southward to the Central
Plains...

...Weather Pattern Overview...

Latest guidance continues to show an evolution toward an amplified
western trough/eastern ridge aloft Sunday-Tuesday, with the
western trough likely most amplified around Monday and the eastern
ridge strongest around Tuesday. Consensus then shows a rapid
flattening of the mean pattern as the western energy ejects and
southern tier ridging retrogrades to some degree. By Thursday an
approaching eastern Pacific trough may even support a weak upper
ridge over the Interior West. The initial amplified
pattern/western upper dynamics will support potential for some
areas of heavy precipitation from the northern Rockies into the
Plains/Upper Midwest, followed by a transition to more emphasis
for heavy rainfall over the central Plains as a wavy front begins
to push southeastward. An area of very cool temperatures will
progress through the West into the northern Plains early in the
week and then modify as it reaches the rest of the Plains.
Meanwhile very warm to hot weather initially over the
Plains/Midwest will shift into the northern half to two-thirds of
the eastern U.S. Duration of warm temperatures over the Northeast
is a question mark however, as flow around a broad upper low over
eastern Canada may push a front into/through the region.

...Model Guidance and Preferences...

The updated forecast accounting for 00Z/06Z guidance started with
an operational model composite (more GFS component from the 00Z
versus 06Z run) early in the period and then trended toward 50-60
percent total 06Z GEFS/00Z ECMWF mean input as specifics became
increasingly uncertain. There are various aspects of the forecast
that have been exhibiting spread/trends over recent runs. Issues
with the western trough involve how Sunday-Monday energy will
ultimately eject from the trough, with peripheral influence from
Pacific flow (just offshore the Pacific Northwest as well as
upstream) plus central Canada troughing/possible embedded low that
have become more pronounced in latest runs and may interact with
the ejecting energy. In general the primary trend over the past
couple days has been for the western energy to eject a bit faster,
but with no real consensus yet for the details. The past couple
UKMET runs have been rather extreme with the speed of upstream
Pacific flow and southeastward amplitude of troughing that
eventually reaches the Plains (the latter being an error in some
UKMET runs with a prior ejecting feature around a couple weeks
ago). At the same time most guidance has generally trended more
pronounced with flow around an upper low crossing far eastern
Canada, bringing a better defined cold front through parts of the
Northeast and perhaps stalling this front for a time somewhere
between the northern Mid-Atlantic and New England (with a lot of
spread in the guidance at this time). The 06Z GFS compared more
poorly to consensus for the upper low track/cyclonic flow
amplitude versus the 00Z run or most other guidance. The 12Z GFS
returned somewhat closer to the majority. By next Thursday there
is decent agreement on a more progressive/low amplitude shortwave
over the Upper Midwest pushing along the central U.S. front from
earlier in the week, while a weak upper ridge reaches the West.

...Sensible Weather/Threat Highlights...

From Sunday into the early part of the next work week, the upper
low moving over the parts of the West along with areas of low
level upslope flow should combine to generate a period of moderate
to heavy precipitation over the northern Rockies and High Plains
while a slowly moving wavy frontal system over the Plains could
help to focus locally heavy rainfall as far east as the Upper
Midwest. Currently expect heaviest totals over parts of Montana
and northern Wyoming with significant snowfall possible in higher
elevations of the Rockies. The Storm Prediction Center is also
monitoring the potential for severe weather over parts of the
Plains/Upper Midwest in the Sunday-Monday time frame. Toward
midweek the flatter trend for the upper pattern should begin to
push the Plains front southeastward, likely shifting the emphasis
for heaviest rainfall into or near the central Plains. The
extreme southern tier including Florida may see some scattered
diurnally favored convection, aided by energy aloft to the south
of the eastern U.S. upper ridge. Parts of the Northeast could see
one or more episodes of rainfall with a cold front that moves
into/through the region and possibly stalls for a time over New
England or the northern Mid-Atlantic. Some rainfall could be
locally moderate to heavy but with low confidence in details thus
far.

Warmest temperature anomalies on Sunday will extend from the
southern High Plains into the Midwest, with some locations up to
10-20F above normal. Parts of the central/southern Plains may see
the very warm to hot weather persist into early next week but
otherwise the emphasis for heat will shift more into the northern
half to two-thirds of the East with a broad area of plus 10-20F
anomalies and perhaps some daily records, more for morning lows
versus daytime highs. The front over the Northeast may bring a
cooling trend to parts of that region though. On the other hand,
well below normal temperatures will push across the West into the
northern Plains Sunday onward, with a broad area of highs 10-20F
below normal Sunday-Tuesday. Some lingering minus 10-15F
anomalies are possible into Wednesday over the northern-central
Plains but further moderation is likely thereafter. A warmer
trend over the West will bring moderately above normal highs into
the region by Wednesday-Thursday.

Rausch

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


Hazards:
- Heavy precipitation across portions of the Northern
Plains/Rockies, and the Northern Great Basin,
Sun-Mon, May 29-May 30.
- Heavy rain across portions of the Pacific Northwest, Sun, May 29.
- Heavy rain across portions of the Central/Northern Plains, and
the Northern Rockies, Sun-Mon, May
29-May 30.
- Heavy rain across portions of the Central Plains, Tue-Wed, May
31-Jun 1.
- Severe weather across portions of the Central/Northern Plains,
and the Middle/Upper Mississippi
Valley, Sun, May 29.
- Severe weather across portions of the Central/Northern Plains,
the Middle/Upper Mississippi
Valley, Mon, May 30.
- Flooding possible across portions of the Central Plains.
- Flooding occurring or imminent across portions of the Upper
Mississippi Valley and the Northern
Plains.
- Flooding likely across portions of the Southern Plains.
- Excessive heat across portions of the Southern Plains, Sun, May
29.
- High winds across portions of the Central Plains/Rockies/Great
Basin, the Southern
Rockies/Plains, and the Southwest, Sun-Mon, May 29-May 30.
- Enhanced wildfire risk across portions of the Southern Rockies,
the Central/Southern Plains, and
the Southwest, Sun-Mon, May 29-May 30.


WPC medium range 500mb heights, surface systems, weather grids,
quantitative precipitation, experimental excessive rainfall
outlook, winter weather outlook probabilities and heat indices are
at:

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