Alert archive / Georgia / Flash Flood Warnings in 2026

Flash Flood Warning 58, NWS Atlanta, GA

August 4, 2026Fannin County, Gilmer County, Georgia

NWS Atlanta, GA issued this flash flood warning at Aug 4, 2026, 7:42 PM EDT for Fannin County, Gilmer County, Georgia. It was in force for 3 hr. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Aug 4, 2026, 7:42 PM EDT (23:42 UTC)
Expired
Aug 4, 2026, 10:56 PM EDT
In force
3 hr
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Flood severity
None

Counties Fannin County, GA, Gilmer County, GA

The radar

The Atlanta radar (KFFC), 165 km from the middle of the area, began a volume at 23:42 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Aug 4, 9:15 PM EDTFLASH FLOOD1 Sse Hemp, GAPicture from the public shows Richards Branch out of its banks with significant flooding across a driveway and yard.
Aug 4, 9:30 PM EDTFLASH FLOODHurst, GAPublic reports Wilscot Creek rose out of its banks and flooded across Highway 60 as well as nearby yards.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 3 storm reports to this flash flood warning; the first came 93 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 11.7 hours before the alert went out and 163 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Peachtre/Fal Fld, GA at 12:00Z on 2026-08-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1083 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Peachtre/Fal Fld, GA at 12:00Z on 2026-08-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -14 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1083 J/kg
Mixed-layer CIN
-20 J/kg
Mixed-layer LCL
834 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
-14 m²/s²
0-3 km storm-relative helicity
14 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

551 
WGUS52 KFFC 042342
FFWFFC
GAC111-123-050345-
/O.NEW.KFFC.FF.W.0058.260804T2342Z-260805T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Peachtree City GA
742 PM EDT Tue Aug 4 2026

The National Weather Service in Peachtree City has issued a

* Flash Flood Warning for...
  East Central Fannin County in north central Georgia...
  Northeastern Gilmer County in north central Georgia...

* Until 1145 PM EDT.

* At 742 PM EDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Between 2 and 3 inches of rain
  have fallen. Additional rainfall amounts of 1 to 3 inches are
  possible in the warned area. Flash flooding is ongoing or expected
  to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar indicated.

  IMPACT...Flash flooding of small creeks and streams, urban areas,
           highways, streets and underpasses as well as other poor
           drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Morganton, Dial, Pisgah, Cherry Log, Hurst and Hemp.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 3481 8446 3484 8431 3488 8424 3490 8416
      3487 8411 3485 8414 3484 8415 3483 8415
      3482 8414 3481 8414 3480 8412 3479 8412
      3468 8430 3472 8445

FLASH FLOOD...RADAR INDICATED

$$

Culver
1 follow-up statement
291 
WGUS72 KFFC 050256
FFSFFC

Flash Flood Statement
National Weather Service Peachtree City GA
1056 PM EDT Tue Aug 4 2026

GAC111-123-050306-
/O.CAN.KFFC.FF.W.0058.000000T0000Z-260805T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Fannin GA-Gilmer GA-
1056 PM EDT Tue Aug 4 2026

...FLASH FLOOD WARNING IS CANCELLED FOR EAST CENTRAL FANNIN AND
NORTHEASTERN GILMER COUNTIES...

The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.

&&

LAT...LON 3481 8446 3484 8431 3488 8424 3490 8416
      3487 8411 3485 8414 3484 8415 3483 8415
      3482 8414 3481 8414 3480 8412 3479 8412
      3468 8430 3472 8445

$$

Culver

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Atlanta, GA wrote its last area forecast discussion before this flash flood warning went out at Aug 4, 2:35 PM EDT, 5 hours 7 minutes earlier. Its key messages:

  • Scattered showers and thunderstorms are possible this afternoon. High rainfall rates and slow storm motions will support localized flash flooding concerns.
  • Diurnally-enhanced storm chances will continue through the end of the week.
  • Afternoon highs will remain within a degree or two of seasonal norms (mid-80s to lower 90s) through the week.
Area forecast discussion, Aug 4, 2:35 PM EDT, 5 hours 7 minutes before
Area Forecast Discussion
National Weather Service Peachtree City GA
235 PM EDT Tue Aug 4 2026

...Afternoon Area Forecast Discussion...

.KEY MESSAGES...

  - Scattered showers and thunderstorms are possible this
    afternoon. High rainfall rates and slow storm motions will
    support localized flash flooding concerns.

  - Diurnally-enhanced storm chances will continue through the
    end of the week.

  - Afternoon highs will remain within a degree or two of seasonal
    norms (mid-80s to lower 90s) through the week.

&&

.SHORT TERM...
(This afternoon through Wednesday)
Issued at 234 PM EDT Tue Aug 4 2026

A mid-level closed low has taken up residence very nearly atop the
state of Georgia, seen plainly on visible satellite imagery where
ongoing convection swirls counter-clockwise. Precipitable water is
largely seasonable (~1.7"), but very weak steering flow and near-
negligible surface winds in the center of the low pressure system
have supported slow to effectively stationary storm motions.
Rainfall rates of 1-2" hour (and occasionally as high as 2.5" an
hour) have been observed through the afternoon, enough to support
continued isolated flash flooding concerns, especially in urbanized
locations/areas with high concentrations of impervious surfaces.
Convection kicked off over the Atlanta metro earlier this morning,
and any subsequent redevelopment will allow for quick responses.
Severe concerns remain minimal and isolated at best in the absence
of meaningful kinematics, with the most likely scenario for an
errant severe storm being an especially water-loaded downdraft.

Convection will taper off later this evening -- generally following
the diurnal cycle -- giving way to chances for patchy dense fog in
the morning for locations that received heavy rainfall during the
afternoon. The pattern remains largely unchanged tomorrow aside from
the aforementioned low pressure system beginning to weaken,
supporting yet another day of diurnally-enhanced showers and
thunderstorms capable of producing isolated instances of flash
flooding/flooding of creeks and streams.

Highs will remain in the mid-80s to lower 90s through tomorrow, with
overnight lows in the upper 60s to lower 70s.

&&

.LONG TERM...
(Thursday morning through next Monday)
Issued at 234 PM EDT Tue Aug 4 2026

Models are in good agreement that the mid-level low that has been
parked over our CWA for the last few days will finally begin to
dissolve as it shifts off toward the northeast through Wednesday.
Our area will remain in a moist southwest flow along the periphery
of a strengthening Bermuda high pressure. This will reinforce the
continuation of a summertime pattern with decent PWATs ranging from
1.5-2.0" and diurnal thunderstorm chances each day through the
period. The coverage of thunderstorms will be scattered to numerous
through the period with plenty of instability over the region. In
addition, ample afternoon cloud cover will suppress high
temperatures by a few degrees through Friday before higher heights
build by late week, allowing for temperatures to climb into the
upper 80s to low 90s as the high builds in closer to our area. While
no organized severe weather is expected, a few storms may become
strong with gusty winds as the primary threat, in addition to
localized flash flooding in areas with prolonged convective
activity.

&&

.AVIATION...
(18Z TAFS)
Issued at 126 PM EDT Tue Aug 4 2026

Primarily SCT to BKN MVFR to low-VFR conds this aftn, with chcs
for deterioration to MVFR to IFR by tmrw morning for areas that
receive heavy pcpn today. Isold to sct slow-moving TSRA psbl from
18-24Z, accompanied by 3-4SM vsbys. Winds will largely be light
and VRB, esp in VC of any storms, but may favor the E through 00Z.

//ATL Confidence...18Z Update...
Medium confidence AM ceiling progression.
High confidence all other elements.

96

&&

.PRELIMINARY POINT TEMPS/POPS...
Athens          69  85  70  88 /  50  70  40  50
Atlanta         71  86  72  88 /  40  70  20  50
Blairsville     65  80  66  82 /  30  70  30  90
Cartersville    70  87  71  89 /  30  70  20  60
Columbus        72  90  73  92 /  20  40  10  20
Gainesville     69  83  70  86 /  50  70  30  70
Macon           71  90  71  91 /  20  40  20  30
Rome            69  87  70  89 /  20  60  20  60
Peachtree City  69  87  70  89 /  30  70  20  40
Vidalia         72  93  73  93 /  20  20  30  60

&&

.FFC WATCHES/WARNINGS/ADVISORIES...
None.
&&

SHORT TERM...96
LONG TERM....82
AVIATION...96
Hazardous weather outlook, Aug 4, 4:43 AM EDT, 14 hours 59 minutes before
Hazardous Weather Outlook
National Weather Service Peachtree City GA
443 AM EDT Tue Aug 4 2026

GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086-
089>098-102>113-050845-
Baldwin-Banks-Barrow-Bartow-Bibb-Bleckley-Butts-Carroll-Catoosa-
Chattahoochee-Chattooga-Cherokee-Clarke-Clayton-Cobb-Coweta-
Crawford-Crisp-Dade-Dawson-DeKalb-Dodge-Dooly-Douglas-Emanuel-
Fannin-Fayette-Floyd-Forsyth-Gilmer-Glascock-Gordon-Greene-
Gwinnett-Hall-Hancock-Haralson-Harris-Heard-Henry-Houston-Jackson-
Jasper-Jefferson-Johnson-Jones-Lamar-Laurens-Lumpkin-Macon-
Madison-Marion-Meriwether-Monroe-Montgomery-Morgan-Murray-
Muscogee-Newton-North Fulton-Oconee-Oglethorpe-Paulding-Peach-
Pickens-Pike-Polk-Pulaski-Putnam-Rockdale-Schley-South Fulton-
Spalding-Stewart-Sumter-Talbot-Taliaferro-Taylor-Telfair-Toombs-
Towns-Treutlen-Troup-Twiggs-Union-Upson-Walker-Walton-Warren-
Washington-Webster-Wheeler-White-Whitfield-Wilcox-Wilkes-
Wilkinson-
443 AM EDT Tue Aug 4 2026

This Hazardous Weather Outlook is for north and central Georgia.

.DAY ONE...Today and Tonight...

Scattered to isolated thunderstorms are possible for much of north
and central Georgia today. Locally gusty winds and briefly heavy
rainfall may be possible this afternoon.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday...

Additional rounds of showers and thunderstorms are expected
through at least mid-week. Locally heavy rainfall and gusty winds
will be possible each afternoon.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed through tonight.

In the hours before

Special weather statement, Aug 4, 6:01 PM EDT, 1 hour 41 minutes before
Special Weather Statement
National Weather Service Peachtree City GA
601 PM EDT Tue Aug 4 2026

GAZ073-074-084-085-097-042245-
Wilkinson GA-Washington GA-Baldwin GA-Johnson GA-Laurens GA-
601 PM EDT Tue Aug 4 2026

...A strong thunderstorm will impact portions of Wilkinson, northern
Laurens, southeastern Baldwin, southwestern Washington and
northwestern Johnson Counties through 645 PM EDT...

At 601 PM EDT, a strong thunderstorm was near Toomsboro, or 9 miles
east of Irwinton, moving northeast at 15 mph.

HAZARD...Up to 40 mph wind, pea sized hail and frequent cloud to
         ground lightning.

SOURCE...Radar indicated.

IMPACT...Expect minor damage to tree limbs and blowing around of
         light, unsecured objects.

Locations impacted include...
Dublin, Irwinton, East Dublin, Ivey, McIntyre, Dexter, Dudley,
Toomsboro, Rentz, Oconee, Montrose, Tuckers Crossroad, Nicklesville,
Lovett, Harlow, Hebron, Chappells Mill, and Brewton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People outdoors should seek shelter immediately. If you can hear
thunder, you are close enough to be struck by lightning.

&&

LAT...LON 3289 8330 3308 8306 3308 8302 3259 8273
      3234 8306
TIME...MOT...LOC 2201Z 221DEG 11KT 3278 8302

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH
Special weather statement, Aug 4, 6:20 PM EDT, 1 hour 22 minutes before
Special Weather Statement
National Weather Service Peachtree City GA
620 PM EDT Tue Aug 4 2026

GAZ007-013-014-042300-
Gilmer GA-Dawson GA-Pickens GA-
620 PM EDT Tue Aug 4 2026

...A strong thunderstorm will impact portions of southwestern Gilmer,
west central Dawson and Pickens Counties through 700 PM EDT...

At 620 PM EDT, a strong thunderstorm was over Lake Tamarack, or near
Jasper, moving northwest at 15 mph.

HAZARD...Up to 40 mph wind, pea sized hail and frequent cloud to
         ground lightning.

SOURCE...Radar indicated.

IMPACT...Expect minor damage to tree limbs and blowing around of
         light, unsecured objects.

Locations impacted include...
Jasper, Talking Rock, Sequoyah Lake, Talona, Blaine, Lake Tamarack,
Marblehill, Hinton, and Roundtop.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People outdoors should seek shelter immediately. If you can hear
thunder, you are close enough to be struck by lightning.

&&

LAT...LON 3448 8424 3441 8428 3444 8459 3459 8462
      3466 8446
TIME...MOT...LOC 2220Z 116DEG 12KT 3447 8434

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH
Special weather statement, Aug 4, 6:49 PM EDT, 53 minutes before
Special Weather Statement
National Weather Service Peachtree City GA
649 PM EDT Tue Aug 4 2026

GAZ074-085-042315-
Washington GA-Johnson GA-
649 PM EDT Tue Aug 4 2026

...A strong thunderstorm will impact portions of southeastern
Washington and northwestern Johnson Counties through 715 PM EDT...

At 648 PM EDT, a strong thunderstorm was near Tuckers Crossroad, or
near Wrightsville, moving northeast at 15 mph.

HAZARD...40 to 50 mph wind, frequent cloud to ground lightning and
         heavy rain.

SOURCE...Radar indicated.

IMPACT...Expect minor damage to tree limbs and blowing around of
         light, unsecured objects. Heavy rain may cause temporary
         street flooding especially in poor drainage areas.

Locations impacted include...
Wrightsville, Tennille, Harrison, New Home, Donovan, and Pringle.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People outdoors should seek shelter immediately. If you can hear
thunder, you are close enough to be struck by lightning. Motorists
should slow down and be prepared for possible loss of control due to
hydroplaning.

&&

LAT...LON 3276 8257 3269 8279 3272 8286 3271 8290
      3276 8296 3278 8296 3295 8280 3289 8265
TIME...MOT...LOC 2248Z 231DEG 14KT 3277 8282

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH

Culver
Special weather statement, Aug 4, 6:50 PM EDT, 52 minutes before
Special Weather Statement
National Weather Service Peachtree City GA
650 PM EDT Tue Aug 4 2026

GAZ006-008-042315-
Union GA-Fannin GA-
650 PM EDT Tue Aug 4 2026

...A strong thunderstorm will impact portions of northwestern Union
and northeastern Fannin Counties through 715 PM EDT...

At 650 PM EDT, a strong thunderstorm was over Hemp, or 7 miles east
of Blue Ridge, moving west at 10 mph.

HAZARD...40 to 50 mph wind, frequent cloud to ground lightning and
         heavy rain.

SOURCE...Radar indicated.

IMPACT...Expect minor damage to tree limbs and blowing around of
         light, unsecured objects. Heavy rain may cause temporary
         street flooding especially in poor drainage areas.

Locations impacted include...
Blue Ridge, Morganton, Hemp, Mineral Bluff, Nottely Dam, Hurst,
Loving, and Jones Creek.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People outdoors should seek shelter immediately. If you can hear
thunder, you are close enough to be struck by lightning. Motorists
should slow down and be prepared for possible loss of control due to
hydroplaning.

&&

LAT...LON 3498 8406 3482 8408 3477 8429 3480 8431
      3481 8433 3482 8433 3483 8435 3489 8441
      3499 8435 3499 8411
TIME...MOT...LOC 2250Z 090DEG 9KT 3489 8420

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH

Culver
Special weather statement, Aug 4, 7:02 PM EDT, 40 minutes before
Special Weather Statement
National Weather Service Peachtree City GA
702 PM EDT Tue Aug 4 2026

GAZ013-042330-
Pickens GA-
702 PM EDT Tue Aug 4 2026

...A strong thunderstorm will impact portions of northwestern Pickens
County through 730 PM EDT...

At 702 PM EDT, a strong thunderstorm was over Talking Rock, or near
Jasper, moving west at 10 mph.

HAZARD...40 mph wind and heavy rain.

SOURCE...Radar indicated.

IMPACT...Expect minor damage to tree limbs and blowing around of
         light, unsecured objects. Heavy rain may cause temporary
         street flooding especially in poor drainage areas.

Locations impacted include...
Jasper, Talking Rock, Hinton, Blaine, and Talmadge.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People outdoors should seek shelter immediately. Motorists should
slow down and be prepared for possible loss of control due to
hydroplaning.

&&

LAT...LON 3455 8452 3454 8441 3444 8441 3441 8465
      3455 8465
TIME...MOT...LOC 2302Z 090DEG 9KT 3449 8450

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

Culver
Special weather statement, Aug 4, 7:18 PM EDT, 24 minutes before
Special Weather Statement
National Weather Service Peachtree City GA
718 PM EDT Tue Aug 4 2026

GAZ006>008-042345-
Gilmer GA-Union GA-Fannin GA-
718 PM EDT Tue Aug 4 2026

...Strong thunderstorms will impact portions of central Gilmer,
western Union and Fannin Counties through 745 PM EDT...

At 718 PM EDT, a line of strong thunderstorms was along a line
extending from Mineral Bluff to near Pisgah, and moving west at 15
mph.

HAZARD...40 to 50 mph wind, frequent cloud to ground lightning and
         heavy rain.

SOURCE...Radar indicated.

IMPACT...Expect minor damage to tree limbs and blowing around of
         light, unsecured objects. Heavy rain may cause temporary
         street flooding especially in poor drainage areas.

Locations impacted include...
Ellijay, Blue Ridge, East Ellijay, Morganton, Hemp, Margret, Higdon,
Hurst, Loving, Jones Creek, Epworth, Dial, Pisgah, Mineral Bluff,
Cherry Log, Colwell, and Gaddistown.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People outdoors should seek shelter immediately. If you can hear
thunder, you are close enough to be struck by lightning. Motorists
should slow down and be prepared for possible loss of control due to
hydroplaning.

&&

LAT...LON 3497 8445 3480 8454 3464 8447 3470 8401
      3494 8401
TIME...MOT...LOC 2318Z 075DEG 12KT 3493 8426 3471 8425

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH

Culver

The office that day

Everything else NWS Atlanta, GA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 4, 12:30 PM EDTSpecial Weather StatementFFCCobb, Fulton30 min
Aug 4, 12:50 PM EDTFlash Flood WarningFFCCobb, Fulton117 min
Aug 4, 12:52 PM EDTSpecial Weather StatementFFCClayton23 min
Aug 4, 1:07 PM EDTSpecial Weather StatementFFCHenry23 min
Aug 4, 1:10 PM EDTSpecial Weather StatementFFCDeKalb35 min
Aug 4, 1:52 PM EDTSpecial Weather StatementFFCBartow23 min
Aug 4, 1:59 PM EDTSpecial Weather StatementFFCMorgan31 min
Aug 4, 2:32 PM EDTSpecial Weather StatementFFCFloyd28 min
Aug 4, 2:37 PM EDTSpecial Weather StatementFFCMorgan38 min
Aug 4, 2:51 PM EDTSpecial Weather StatementFFCOconee24 min
Aug 4, 3:02 PM EDTSpecial Weather StatementFFCFloyd28 min
Aug 4, 3:14 PM EDTSpecial Weather StatementFFCOglethorpe31 min
Aug 4, 3:28 PM EDTSpecial Weather StatementFFCBarrow32 min
Aug 4, 3:34 PM EDTSpecial Weather StatementFFCOglethorpe26 min
Aug 4, 3:50 PM EDTSpecial Weather StatementFFCClarke25 min
Aug 4, 4:09 PM EDTSpecial Weather StatementFFCBaldwin36 min
Aug 4, 4:40 PM EDTSpecial Weather StatementFFCBaldwin35 min
Aug 4, 5:03 PM EDTSpecial Weather StatementFFCBaldwin27 min
Aug 4, 5:10 PM EDTSpecial Weather StatementFFCPutnam35 min
Aug 4, 5:34 PM EDTSpecial Weather StatementFFCWilkinson26 min
Aug 4, 5:45 PM EDTSpecial Weather StatementFFCPutnam45 min
Aug 4, 6:01 PM EDTSpecial Weather StatementFFCWilkinson44 min
Aug 4, 6:20 PM EDTSpecial Weather StatementFFCPickens40 min
Aug 4, 6:49 PM EDTSpecial Weather StatementFFCJohnson26 min
Aug 4, 6:50 PM EDTSpecial Weather StatementFFCFannin25 min
Aug 4, 7:02 PM EDTSpecial Weather StatementFFCPickens28 min
Aug 4, 7:18 PM EDTSpecial Weather StatementFFCFannin, Gilmer27 min

Nearby

Flash Flood Warnings in Georgia, 2026Every flash flood warning in 2026

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.