Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
451 PM EDT Fri Sep 26 2025

Valid 12Z Mon Sep 29 2025 - 12Z Fri Oct 03 2025


...Potential Tropical Cyclone 9 may bring tropical impacts to the
Southeast and Mid-Atlantic next week...

...Overview...

The upper level pattern will feature mean troughing over the West,
low pressure over the Southeast, and narrow ridging in between.
This pattern will support enhanced precipitation chances in the
West and Southeast, with chances for heavy rain that could lead to
flash flooding. The highest area of concern will be portions of the
Southeast and Mid-Atlantic that may be impacted by Potential
Tropical Cyclone 9 next week. However, the forecast for these
regions is highly uncertain given high uncertainty in the forecast
track of the system. Most of the Central U.S. and Northeast will
remain dry through the period under the influence of high pressure.
Precipitation chances may increase later next week across the
norht-Central U.S. as a frontal boundary moves across the West and
emerges in the Plains.


...Guidance/Predictability Assessment...

Model guidance is generally in agreement on the large scale upper
level pattern with some uncertainty surrounding features
approaching the West and East Coasts. In the West, there is
increased agreement on the evolution of the upper trough moving
inland, but there are differences in how individual models handle
shortwave energy moving through the trough. This has led to
differences in the evolution of Pacific frontal systems moving
onshore. For now, it seems like a middle of the road solution
worked best to represent potential timing and position of these
systems.

The forecast is much more complicated for the East given a high
amount of uncertainty surrounding the evolution of Potential
Tropical Cyclone 9, which is currently forecast to move towards
the Southeast Coast while strengthening next week. Some models
bring the tropical system inland in the Carolinas, some stall the
system right over the Carolina coast, and some stall the system
further away from the coast before swinging the system out into the
Atlantic. The ultimate evolution will depend on the system's
interactions with Hurricane Humberto to the east and high pressure
strengthening to the north. If the strong high shifts east, the
system could move inland, but if the high remains due north, a
stalled solution would be favored. After coordinating with the
National Hurricane Center, the current forecast thinking is to
stall the system very close to the Carolina coast. This solution is
similar to the 00/12Z ECMWF solutions and may result in a
prolonged heavy rainfall event for coastal areas of the Carolinas.

WPC's afternoon forecast blend was comprised of the 00Z
ECMWF/CMC/UKMET and 06Z GFS, with heavier weight placed on the
ECMWF and GFS than the CMC and UKMET, for Monday through Wednesday.
By Thursday and Friday, ensemble means from the GEFS and ECENS were
added in increasing amounts, making up to 60% of the blend, which
helped to smooth out large differences in the deterministic
models.


...Weather/Hazards Highlights...

Showers and thunderstorms will be possible near a lingering
frontal boundary over the Mid-Atlantic and Southeast early next
week. Anomalous moisture associated with Potential Tropical Cyclone
9 will maintain precipitation chances, with a heavy rain and flash
flood threats, through mid-week. The highest risk of flash
flooding will likely focus over the coastal Carolinas, but rainfall
amounts are highly uncertain and will depend on the track of the
system. Some models suggest much higher rainfall amounts are
possible while some suggest lower amounts. For now, there is a
Marginal Risk of excessive rainfall across the Carolinas and
Virginia with a Slight Risk for the eastern Carolinas and
southeastern Virginia on Monday and Tuesday. If the system moves
inland at all, there may be enhanced precipitation over upslope
areas of the Appalachians that would lead to a higher flash flood
risk. The heavy rain and flash flood threats may continue beyond
Tuesday if the system stalls near the coast, with precipitation
chances extending through Thursday and Friday. Regardless of how
the rainfall forecast turns out, the Southeast Coast will likely
experience dangerous surf and rip current conditions early next
week, and some coastal areas may experience strong winds.

Pacific moisture ahead of the upper trough will result in
continued rain chances for the West Coast and Intermountain West on
Monday and Tuesday. Precipitation may be enhanced over northern
California and southern Oregon as a slow-moving frontal system
moves onshore, resulting in localized flash flooding chances and a
Marginal Risk of excessive rainfall on Monday and Tuesday.
Precipitation chances should decrease on Wednesday and Thursday,
but precipitation will likely linger over the Pacific Northwest and
northern Rockies. Precipitation chances may also increase later
next week across the north-Central U.S. once the frontal system
pushes across the mountain and emerges in the Plains.

Warmer than average temperatures will persist across the Northern
Plains as upper ridging builds over the region next week. Daytime
highs could be 10-20 degrees above normal for parts of the Upper
Midwest. Below average temperatures are expected across much of the
West and Southeast due to upper troughing and potential rainfall.


Dolan


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

Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
357 PM EDT Sat Sep 27 2025

Valid 12Z Tue Sep 30 2025 - 12Z Sat Oct 04 2025


...Tropical Depression Nine will bring tropical impacts to the
Southeast/Carolinas next week...

...Overview...

The path and impacts of Tropical Depression Nine will be a primary
forecast concern into next week. The current forecast track shows
Nine stalling just offshore in the western Atlantic but providing
rain and possible flooding to at least the coastal Carolinas for
the start of the medium range period Tuesday. There remains ample
uncertainty in rain amounts especially farther inland, which depend
on the uncertain track of the system influenced by Hurricane
Humberto to its east, cool surface high pressure in the Northeast,
and a northern stream trough. Farther west, mean upper ridging is
forecast to set up from the Southwest northeastward into the
Midwest promoting warm temperatures and mainly dry conditions.
Meanwhile the West can expect mean troughing with cooler
temperatures and rounds of precipitation.


...Guidance/Predictability Assessment...

WPC follows the National Hurricane Center (NHC) track for T.D.
Nine, which shows the strengthening tropical cyclone remaining
offshore in the western Atlantic but close enough to land to bring
heavy rainfall to the Carolinas Tuesday. Recent deterministic model
guidance from the 00/06Z cycle and the new 12Z cycle is agreeable
with this type of track showing no landfall through midweek.
However, there are still ensemble members from the GEFS/EC/CMC
ensembles and the AI/ML Google DeepMind and AIFS ensembles that
show a landfalling system, so coastal areas may not be out of the
woods for landfall yet. For the WPC forecast, used the
ECMWF/CMC/AIFS through around midweek for QPF and background model
data with the NHC points for the system. The incoming 12Z guidance
continues to indicate splitting model guidance, with the new 12Z
CMC much faster in turning the cyclone east than its 00Z run, the
12Z GFS slowing down somewhat (more favorably with the NHC track),
and the 12Z ECMWF slowing it down considerably where it stalls/does
not get taken east even into later week. Continue to monitor NHC
forecasts for further details and updates to the track and timing
of Nine.

Elsewhere, models are generally agreeable on the large scale with
the mean trough in the West slowly moving eastward with less
certain shortwaves moving through and pushing fronts through the
region, but the spread is typical for the medium range time frame.
Additionally, the elongated upper ridge shows reasonable consensus
as it stretches from the Southwest across parts of the central U.S.
into the Ohio Valley and eventually the Northeast. Weak energy may
cut off from this ridge in the southern stream over the Southeast
or so, with more uncertainty. Overall across the lower 48, a multi-
model blend of mainly deterministic guidance was used for the
early to mid medium range period, with increasing proportions of
the GEFS and EC ensemble means during the latter period.


...Weather/Hazards Highlights...

The Carolinas can expect wet and unsettled conditions into Tuesday
as T.D. Nine approaches with its anomalously high tropical
moisture and its interaction with a lingering stationary front.
Heavy rain and flash flooding are threats with this system, with
highest rainfall totals particularly along coastal areas. It is
more uncertain how much rain will reach farther inland. Marginal
and Slight Risks were maintained in the Day 4/Tuesday ERO, with
some minor shifts based on newest guidance like trimming out the
northern side of the previous issuance of the Slight (taking it out
of southern Virginia). Most of the recent guidance and the NHC
track takes the system farther east by Day 5/Wednesday for less of
a rainfall threat by then, so removed the Marginal Risk at this
time and will see how future forecasts evolve. In addition to
rain/flooding threats, the Southeast Coast will likely experience
dangerous surf and rip current conditions into Tuesday, and some
coastal areas may experience strong winds. Then scattered showers
and storms are possible in Florida and into the Gulf Coast through
much of the week.

A weak atmospheric river is forecast to push across the Pacific
Northwest into California on Tuesday and Wednesday with a cold
front ahead of the upper trough. Rain totals generally under an
inch or two do not appear to cause hazardous conditions in the
coastal mountain areas that are accustomed to seeing multiple
inches of rain. Rain could continue in the West Coast states
through Thursday with another front. Rounds of precipitation will
be likely across parts of the Intermountain West/Rockies through
multiple days next week, and the higher elevations can expect snow.
Precipitation chances may also increase later next week across the
north-central U.S. once the frontal system pushes across the
mountain and emerges in the Plains.

With upper ridging building overhead, warmer than seasonal average
temperatures are expected across the central U.S., especially for
the Northern Plains to Upper Midwest. Highs of 10 to 20 degrees
above normal will be common in those areas, with highs of 80F
reaching to the Canadian border Tuesday-Wednesday. 90s are likely
to continue for early October into the Desert Southwest and Texas.
Meanwhile, below normal temperatures especially for highs are
likely across the West due to upper troughing and rainy/cloudy
conditions.


Tate


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

Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
358 PM EDT Sun Sep 28 2025

Valid 12Z Wed Oct 01 2025 - 12Z Sun Oct 05 2025


...Overview...

As there is better consensus for Imelda to curve east away from the
U.S. before midweek, attention turns to other forecast aspects
during the medium range period. A relatively slow-moving and blocky
pattern will set up across the U.S., with mean troughing in the
West promoting frontal passages with cooler temperatures and rounds
of precipitation, while an upper ridge sets up from the Southwest
northeastward into the Midwest promoting warm temperatures and
mainly dry conditions. Southern stream energy and a possible
frontal boundary atop the Gulf Coast/Florida could allow for rounds
of rain and storms there.


...Guidance/Predictability Assessment...

The early part of the medium range period (starting Wednesday)
shows reasonably good agreement on the large scale with the pattern
described above. Initial troughing will be quickly lifting out of
the north-central U.S. while a primary upper low is forecast just
offshore British Columbia and supports troughing atop the eastern
Pacific and Northwest. In the East, most upper troughing will be
exiting midweek but could leave some energy behind around the Gulf
Coast or so that would meander through much of the week south of
the agreeable ridge axis. The most uncertain part of the forecast
is how troughing in the West evolves. GFS runs from 00Z/06Z
maintained a closed low for longer as it slowly pushes into the
Northwest compared to the faster/open troughing of the ECMWF, CMC,
and most EC-based AI models by Thursday-Friday. The newer 12Z GFS
has jumped to an open trough, more like consensus, with a possible
shortwave farther in the Central Rockies or so on Saturday. The
evolution also depends on additional upstream energy dropping
through western Canada. For the most part the newer 12Z model suite
shows this energy being stronger as it moves into the Northwest
next weekend, and pushing the first shortwave east more quickly.
Will see if these trends continue.

The WPC forecast used a multi-model blend of deterministic
guidance early in the forecast period. As the period progressed,
increased the proportion of GEFS and EC ensemble means, reaching
half means for Days 6-7 amid increasing spread.


...Weather/Hazards Highlights...

A weak atmospheric river is forecast to push across the Pacific
Northwest into California Wednesday with a cold front ahead of the
upper trough. Rain totals generally under an inch or two do not
appear to cause hazardous conditions in the coastal mountain areas
that are accustomed to seeing multiple inches of rain. Rain could
continue in the West Coast states through Thursday with another
front. Rounds of precipitation will be likely across parts of the
Intermountain West/Rockies through multiple days this week, and the
higher elevations can expect snow. Moisture levels will be above
normal, but the rain seems unlikely to cause flooding concerns with
not much instability in place, limiting rain rates. Precipitation
chances should increase later week into next weekend across the
north-central U.S. once the frontal system emerges in the Plains.

After Imelda tracks east away from the Southeast U.S., some weak
energy aloft in the southern stream could stall south of the
northeastward oriented trough, which along with a frontal boundary
and sufficient moisture could lead to scattered showers and storms
across Florida and for the Southeast, especially along the Gulf
Coast. Through Wednesday and Thursday rain amounts and rates look
to stay below Marginal Risk ERO thresholds, but moisture and
instability look to increase by next weekend. Meanwhile most areas
under the upper trough stay dry through the latter half of the week
into the weekend, including the Southwest/southern Plains
extending into the Ohio Valley and the Northeast/Mid-Atlantic.

With upper ridging building overhead, warmer than seasonal average
temperatures are expected across the central U.S., most anomalous
for the Northern Plains to Upper Midwest. Highs of 10 to 20 degrees
above normal will be common in those areas through late week, with
highs of 80F reaching to the Canadian border by Wednesday. 90s are
likely to continue for early October into the Desert Southwest and
Texas. By next weekend, warmer than average temperatures could
shift a bit east and cover the Great Lakes region and Northeast.
Meanwhile, below normal temperatures especially for highs are
likely across the West due to upper troughing and rainy/cloudy
conditions.


Tate


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

Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
356 PM EDT Mon Sep 29 2025

Valid 12Z Thu Oct 02 2025 - 12Z Mon Oct 06 2025


...Overview...

Through late week into early next week, much of the lower 48 will
be in a relatively slow-moving and blocky pattern. Rounds of
renewing upper troughing are likely in the West, with multiple
frontal passages bringing cooler temperatures and rounds of
precipitation. Meanwhile, an upper ridge will stretch from the
Desert Southwest into the Midwest promoting warm temperatures and
mainly dry conditions. Southern stream energy and a possible
frontal boundary atop the Gulf Coast/Florida could allow for rounds
of rain and storms there.


...Guidance/Predictability Assessment...

The extended period begins with a reasonably well clustered
pattern. Positively tilted upper ridging will be in place from the
Southwest to Northeast; however there will be lingering energy for
the Gulf region to the south of the ridge axis. Farther west, a
primary upper low near British Columbia is expected to usher in
troughing to the Northwest/Intermountain West. The timing of this
trough moving in late week remains somewhat questionable. The
trough track is generally slower than a day ago, but will depend on
an upstream shortwave dropping south from the northeast Pacific.
The 00Z CMC was an outlier in having a stronger upstream shortwave
farther south by Friday, but the 12Z CMC has trended closer to
consensus. The 00Z UKMET was farther west and stronger with this
upstream shortwave, but kicks out the initial troughing more like
most models from a day ago, and was not favored. New 12Z model runs
are generally even slower across the West around Saturday,
especially the ECMWF. This should generally pivot east while the
second shortwave continues to develop troughing in the Northwest,
but there are timing differences in the shortwaves affecting
sensible weather. By next Monday most guidance indicates energy
pulling away to create possibly closed upper low development atop
California and vicinity. This appears to be in good agreement Day 7
but the variations in the Days 4-6 forecast limit confidence.

Given initial reasonable agreement, the WPC forecast began with a
blend of the 06Z GFS, 00Z ECMWF, and lesser amounts of the 00Z CMC
early in the forecast period, with increasing proportions of the
ensemble means to 60 percent Days 6-7.


...Weather/Hazards Highlights...

Shortwaves within the Western trough and associated surface fronts
will promote rounds of precipitation especially for the Rockies
and Intermountain West. The higher elevations can expect snow under
the upper trough. Moisture levels will be above normal, but the
rain seems unlikely to cause flooding concerns with not much
instability in place, limiting rain rates. The Pacific Northwest
could see precipitation especially Thursday. Rain chances are
forecast to expand into the north-central U.S. late week into the
weekend as a couple of frontal systems emerge into the Plains.

Some weak energy aloft in the southern stream could stall south of
the southwest to northeast oriented trough, which along with a
frontal boundary and sufficient moisture could lead to scattered
showers and storms across Florida and for the Southeast, especially
along the Gulf Coast. Rain accumulations and hourly rates seem to
be below the threshold for excessive rainfall at this time, but
will continue to monitor for flooding concerns especially in urban
areas that tend to be more sensitive. Moisture and instability
could lift north into Georgia and the Carolinas over the weekend.
Meanwhile most areas under the upper trough stay dry through the
latter half of the week into the weekend, including the
Southwest/southern Plains extending into the Ohio Valley and the
Northeast/Mid-Atlantic.

Warmer than seasonal average temperatures are expected for a vast
majority of the central U.S., most anomalous for the Northern
Plains to Upper Midwest. With the building ridge, daily high
temperatures will average 15 to 25 degrees above normal through
late week, well into the 80s even to the Canadian border. 90s are
likely to continue for early October into the Desert Southwest and
Texas. By the weekend, warmer than average temperatures could shift
a bit east and cover the Great Lakes region and Northeast, while
the northern Plains cools. Meanwhile, below normal temperatures
especially for highs are likely across the West due to upper
troughing and rainy/cloudy conditions.


Tate/Campbell


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

Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
359 PM EDT Tue Sep 30 2025

Valid 12Z Fri Oct 03 2025 - 12Z Tue Oct 07 2025


...Overview...

Deep upper troughing is forecast to progress through the West to
erode a strong ridge initially dominating the eastern two-thirds of
the country. This shift in the synoptic pattern will bring the
first frost/freeze of the season into the lower elevations from
the northern Rockies to the northern Plains after record warmth in
the upper Midwest. Tropical moisture interacting with a stationary
front could deliver heavy rain and thunderstorms along the east
coast of Florida and along portions of the central Gulf Coast.


...Guidance/Predictability Assessment...

Overall, there is decent model agreement on the aforementioned
evolution of the large scale pattern across the U.S. Strong upper
ridging initially extending from the Southwest to Northeast will
be gradually eroded by deep upper troughing forecast to advance
through the western U.S. By early next week, models show good
agreement for an upper low to detach from the main positively-
tilted upper trough over the Southwest. Across the northern tier
states, model consensus shows a sightly faster eastward progression
of the cold front and the positively-tilted upper trough by early
next week.

The WPC medium-range forecasts began with a general consensus of
40% from the 06Z GFS/GEFS, 40% from the 00Z ECMWF/EC mean, and 20%
from the 00Z CMC/CMC mean, with higher proportions from the
ensemble means for Days 5-7.


...Weather/Hazards Highlights...

Multiple rounds of precipitation is forecast for the West and
Intermountain West as shortwaves within the western U.S. upper-
trough and associated surface fronts track eastward, especially
for the Rockies and Intermountain West. The higher elevations can
expect snow with the passage of the upper trough. Moisture levels
will be above normal, but the rain seems unlikely to cause flooding
concerns with not much instability in place, limiting rain rates.
The Pacific Northwest could see precipitation. Rain chances are
forecast to expand into the north-central U.S. late week into the
weekend as a couple of frontal systems emerge into the Plains.

Tropical moisture interacting with a stationary front will lead to
heavy showers and thunderstorms lurking near or just off the Gulf
Coast and off the Southeast U.S. A Marginal Risk of excessive
rainfall is maintained for Day 4 and Day 5 along the eastern coast
of Florida as urban areas tend to be more sensitive. A couple of
weak
low pressure centers may form on the front and could lift north to
enhance rainfall near the central Gulf Coast, and from the east
coast of Florida up into the Georgia coast over the weekend.
Meanwhile, most areas under an expansive deep-layer ridge stay dry
through the latter half of the week into the weekend, including
the Southwest/southern Plains extending into the Ohio Valley and
the Northeast/Mid-Atlantic.

Warmer than seasonal average temperatures are expected for a vast
majority of the central U.S., most anomalous for the Northern
Plains to Upper Midwest. Under the deep-layer ridge, daily high
temperatures will average 15 to 25 degrees above normal through
late week, well into the 80s even to the Canadian border where
daily record high temperatures will most likely be challenged or
broken Saturday afternoon. Meanwhile, 90s are likely to continue
for early October into the Desert Southwest and Texas. By the
weekend, warmer than average temperatures could shift a bit east
and cover the Great Lakes region and Northeast, while the northern
Plains cools. Meanwhile, below normal temperatures especially for
highs are likely across the West due to upper troughing and
rainy/cloudy conditions.


Kong/Campbell


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