Alert archive / Texas / Flash Flood Warnings in 2026
Flash Flood Warning 22, NWS Midland/Odessa, TX
NWS Midland/Odessa, TX issued this flash flood warning at May 20, 2026, 1:15 PM CDT for 4 counties in Texas. 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
- May 20, 2026, 1:15 PM CDT (18:15 UTC)
- Expired
- May 20, 2026, 4:15 PM CDT
- In force
- 3 hr
- Issued by
- NWS Midland/Odessa, TX
- Area
- Storm-based polygon
- Flood severity
- None
Counties Andrews County, TX, Dawson County, TX, Gaines County, TX, Martin County, TX
The radar
The Midland/Odessa radar (KMAF), 67 km from the middle of the area, began a volume at 18:15 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
| Time | Report | Where | Remark |
|---|---|---|---|
| May 20, 1:30 PM CDT | FLASH FLOOD | 1 Wsw Grady, TX | Delayed report - an NWS Employee found evidence of flash flooding along portions of TX 176 west of Tarzan and of low-water crossings along FM 829. The time of occurrence is estimated from radar. |
| May 20, 1:45 PM CDT | FLASH FLOOD | 1 Nne Lamesa, TX | NWS employee reported water flowing over the intersection of U.S. Highway 87 and North 17th Street. |
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 2 storm reports to this flash flood warning; the first came 15 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
Del Rio, TX (KDRT), launched 12:00Z, 6.3 hours before the alert went out and 376 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.
- Mixed-layer CAPE
- 52 J/kg
- Mixed-layer CIN
- -811 J/kg
- Mixed-layer LCL
- 843 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- -56 m²/s²
- 0-3 km storm-relative helicity
- 39 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted.
566
WGUS54 KMAF 201815
FFWMAF
TXC003-115-165-317-202115-
/O.NEW.KMAF.FF.W.0022.260520T1815Z-260520T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Midland/Odessa TX
115 PM CDT Wed May 20 2026
The National Weather Service in Midland/Odessa has issued a
* Flash Flood Warning for...
Northeastern Andrews County in western Texas...
Southwestern Dawson County in western Texas...
Eastern Gaines County in western Texas...
Martin County in western Texas...
* Until 415 PM CDT.
* At 115 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 0.5 and 1 inch of rain
has fallen within the warned area during the past hour and
additional showers and storms will continue to develop. 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...
Lamesa, Lamesa Municipal Airport, Lenorah, Los Ybanez, Patricia,
Klondike, Tenmile, Sparenberg, Tarzan, McKenzie Lake, Punkin Center
and Loop.
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 3251 10262 3270 10253 3294 10241 3296 10231
3296 10223 3291 10213 3269 10177 3236 10169
3230 10169 3209 10201 3209 10212 3211 10225
3250 10218
FLASH FLOOD...RADAR INDICATED
$$
211 follow-up statement
616
WGUS74 KMAF 201901
FFSMAF
Flash Flood Statement
National Weather Service Midland/Odessa TX
201 PM CDT Wed May 20 2026
TXC003-115-165-317-202115-
/O.CON.KMAF.FF.W.0022.000000T0000Z-260520T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Andrews TX-Dawson TX-Gaines TX-Martin TX-
201 PM CDT Wed May 20 2026
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 415 PM CDT THIS
AFTERNOON FOR NORTHEASTERN ANDREWS, SOUTHWESTERN DAWSON, EASTERN
GAINES AND MARTIN COUNTIES...
At 201 PM CDT, an NWS employee reported flash flooding at the
intersection of U.S. Highway 87 and north 17th Street in Lamesa.
Doppler radar continued to indicate showers and thunderstorms
developing and producing heavy rain across much of the warned area.
Between 0.5 and 1 inch of rain has fallen with additional heavy
rainfall possible. Flash flooding is ongoing or expected to begin
shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...NWS Employee reported.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Lamesa, Lamesa Municipal Airport, Lenorah, Los Ybanez, Patricia,
Klondike, Tenmile, Sparenberg, Tarzan, McKenzie Lake, Punkin Center
and Loop.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 3251 10262 3270 10253 3294 10241 3296 10231
3296 10223 3291 10213 3269 10177 3236 10169
3230 10169 3209 10201 3209 10212 3211 10225
3250 10218
FLASH FLOOD...OBSERVED
$$
21What 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 Midland/Odessa, TX wrote its last area forecast discussion before this flash flood warning went out at May 20, 6:40 AM CDT, 6 hours 35 minutes earlier. Its key messages:
- Updated at 638 AM CDT Wed May 20 2026
- Showers and storms are expected today beginning early this afternoon and continuing into this evening. Any strong to severe storms will be capable of producing large hail and damaging winds. We will also monitor for flash flooding.
- Shower and storm chances continue through this weekend as additional disturbances move overhead.
Area forecast discussion, May 20, 6:40 AM CDT, 6 hours 35 minutes before
Area Forecast Discussion National Weather Service Midland/Odessa TX 640 AM CDT Wed May 20 2026 ...New AVIATION... .KEY MESSAGES... Updated at 638 AM CDT Wed May 20 2026 - Showers and storms are expected today beginning early this afternoon and continuing into this evening. Any strong to severe storms will be capable of producing large hail and damaging winds. We will also monitor for flash flooding. - Shower and storm chances continue through this weekend as additional disturbances move overhead. && .SHORT TERM... (Today through Thursday afternoon) Issued at 156 AM CDT Wed May 20 2026 The cold front that moved through the area on Tuesday has washed out across the southern half of the region and will be one of the catalysts for convection during the day today. In addition to the front, plenty of moisture and instability will be available to help some storms become strong to severe. Forecast soundings continue to show plenty of shear, 1000-2000J/kg of MUCAPE, and steep lapse rates favorable for large hail and damaging winds in the most organized storms. Hi-res ensembles show activity getting an early start on the day around or just afternoon with convection developing near the Davis Mountains/Pecos River Valley and moving east into the Permian Basin and Stockton Plateau. Coverage increases during the afternoon and some upscale growth into multicellular clusters or lines of storms may occur before exiting the region tonight after sunset. Daytime highs to the north of the stalled front will struggle to reach out of the 70s as low clouds keep temperatures from moving much. To the south and west of the front, mainly west of the Pecos River, highs will reach into the 80s with 90s along the Rio Grande. Tonight sees a lull in convection as the daytime activity decays or moves off to the east. The dryline establishes itself west of Midland/Odessa near or just west of the TX/NM border. The dryline's position and any leftover boundaries from today will impact where any convection develops on Thursday. Coverage overall will be lower as the upper level support available for storms today will be weaker for Thursday. Similar to today though, large hail and damaging winds will be the primary hazards with any severe storms that develop. Localized flash flooding will also be possible, particularly from Reagan County southward into eastern Pecos and portions of Terrell County that saw significant rainfall on Tuesday. Highs on Thursday remain below normal, but increase into the 80s for most. -Stickney && .LONG TERM... (Thursday night through Tuesday) Issued at 156 AM CDT Wed May 20 2026 Thursday night sees activity once again decay and move off to the east of our area. Friday and through the weekend, a similar pattern continues where daytime convection will be dependent on where the dryline sets up in the CWA and the timing of any upper level disturbances that move in from the west. Medium to long range guidance shows this occurring roughly each day Friday through Sunday with a decrease in activity for Monday. Temperatures through the weekend will hover near or just below normal in the 80s to low 90s. Unsurprisingly, Rio Grande Village and the surrounding low Desert of Big Bend may still reach the century mark on those days, but temperatures will be otherwise unremarkable for late May. Given the isolated to scattered nature of each day's showers and storms, rain amounts will be tough to pin down. Rain chances continue evening into the middle of next week, but that portion of the forecast remains subject to change. -Stickney && .AVIATION... (12Z TAFS) Issued at 638 AM CDT Wed May 20 2026 Near MVFR CIGs have moved into the region at most terminals and will be a fixture for the morning before lifting or dissipating. TS/TSRA are possible this afternoon, but confidence remains low to include mention at all sites with this issuance. Easterly flow shifts southeasterly during the day with sustained winds between 10-15kts. Gusty and erratic winds will be possible with any nearby convection. && .PRELIMINARY POINT TEMPS/POPS... Big Spring 74 59 81 61 / 60 50 30 10 Carlsbad 82 59 90 60 / 30 30 10 10 Dryden 84 64 86 65 / 50 50 10 20 Fort Stockton 83 61 88 63 / 50 50 20 10 Guadalupe Pass 79 59 81 59 / 20 10 0 0 Hobbs 73 55 84 56 / 60 20 20 10 Marfa 85 52 82 50 / 40 20 20 20 Midland Intl Airport 75 60 83 62 / 70 30 10 10 Odessa 75 60 84 63 / 70 30 10 10 Wink 80 60 88 61 / 50 30 10 10 && .MAF WATCHES/WARNINGS/ADVISORIES... TX...None. NM...None. && SHORT TERM...93 LONG TERM....93 AVIATION...93
In the hours before
Special weather statement, May 20, 11:42 AM CDT, 1 hour 33 minutes before
Special Weather Statement
National Weather Service Midland/Odessa TX
1142 AM CDT Wed May 20 2026
TXZ045-201715-
Gaines TX-
1142 AM CDT Wed May 20 2026
...A STRONG THUNDERSTORM WILL IMPACT NORTHEASTERN GAINES COUNTY
THROUGH 1215 PM CDT...
At 1142 AM CDT, Doppler radar was tracking a strong thunderstorm 7
miles north of Seminole, moving north at 35 mph.
HAZARD...Wind gusts of 50 to 55 mph and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.
Locations impacted include...
Seminole, Seagraves, Seagraves Airport, Loop, and Gaines County Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3268 10254 3274 10277 3296 10266 3296 10228
TIME...MOT...LOC 1642Z 200DEG 29KT 3282 10261
MAX HAIL SIZE...0.88 IN
MAX WIND GUST...55 MPH
KLGSpecial weather statement, May 20, 11:50 AM CDT, 1 hour 25 minutes before
Special Weather Statement
National Weather Service Midland/Odessa TX
1150 AM CDT Wed May 20 2026
TXZ050-201715-
Andrews TX-
1150 AM CDT Wed May 20 2026
...A STRONG THUNDERSTORM WILL IMPACT CENTRAL ANDREWS COUNTY THROUGH
1215 PM CDT...
At 1150 AM CDT, Doppler radar was tracking a strong thunderstorm 8
miles southwest of Andrews, moving north at 35 mph.
HAZARD...Wind gusts of 50 to 55 mph and penny size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.
Locations impacted include...
Andrews, Florey, and Andrews County Airport.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3209 10255 3216 10277 3252 10260 3242 10222
TIME...MOT...LOC 1650Z 200DEG 29KT 3222 10261
MAX HAIL SIZE...0.75 IN
MAX WIND GUST...55 MPH
KLGSpecial weather statement, May 20, 12:00 PM CDT, 1 hour 15 minutes before
Special Weather Statement
National Weather Service Midland/Odessa TX
1200 PM CDT Wed May 20 2026
TXZ051-061-062-201730-
Midland TX-Martin TX-Ector TX-
1200 PM CDT Wed May 20 2026
...A STRONG THUNDERSTORM WILL IMPACT EAST CENTRAL ECTOR...
SOUTHEASTERN ANDREWS...NORTHWESTERN MIDLAND AND SOUTHWESTERN MARTIN
COUNTIES THROUGH 1230 PM CDT...
At 1159 AM CDT, Doppler radar was tracking a strong thunderstorm over
Midland International Air and Space Port, or near Midland, moving
northeast at 35 mph.
HAZARD...Wind gusts of 50 to 55 mph and half inch hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.
Locations impacted include...
Midland, Odessa, Midland International Air and Space Port, Warfield,
and Midland Airpark.
This includes Interstate 20 between mile markers 126 and 138.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3185 10214 3194 10233 3209 10224 3209 10221
3213 10221 3220 10217 3211 10194
TIME...MOT...LOC 1659Z 208DEG 29KT 3197 10219
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...55 MPH
KLGSpecial weather statement, May 20, 12:09 PM CDT, 1 hour 6 minutes before
Special Weather Statement
National Weather Service Midland/Odessa TX
1209 PM CDT Wed May 20 2026
TXZ069-201745-
Upton TX-
1209 PM CDT Wed May 20 2026
...A STRONG THUNDERSTORM WILL IMPACT CENTRAL UPTON COUNTY THROUGH
1245 PM CDT...
At 1208 PM CDT, Doppler radar was tracking a strong thunderstorm 10
miles west of Rankin, moving northeast at 35 mph.
HAZARD...Wind gusts of 50 to 55 mph and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.
This storm will remain over mainly rural areas of central Upton
County.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3111 10206 3121 10228 3157 10222 3143 10178
TIME...MOT...LOC 1708Z 208DEG 29KT 3126 10211
MAX HAIL SIZE...0.88 IN
MAX WIND GUST...55 MPH
KLGSpecial weather statement, May 20, 12:14 PM CDT, 1 hour 1 minute before
Special Weather Statement
National Weather Service Midland/Odessa TX
1214 PM CDT Wed May 20 2026
TXZ068-075-201745-
Pecos TX-Crane TX-
1214 PM CDT Wed May 20 2026
...A STRONG THUNDERSTORM WILL IMPACT NORTH CENTRAL PECOS...
SOUTHEASTERN WARD AND NORTHWESTERN CRANE COUNTIES THROUGH 1245 PM
CDT...
At 1214 PM CDT, Doppler radar was tracking a strong thunderstorm 11
miles east of Grandfalls, or 18 miles west of Crane, moving northeast
at 30 mph.
HAZARD...Wind gusts of 50 to 55 mph and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.
Locations impacted include...
Imperial.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3125 10261 3130 10277 3156 10269 3148 10241
TIME...MOT...LOC 1714Z 211DEG 25KT 3135 10266
MAX HAIL SIZE...0.88 IN
MAX WIND GUST...55 MPH
KLGSpecial weather statement, May 20, 12:34 PM CDT, 41 minutes before
Special Weather Statement
National Weather Service Midland/Odessa TX
1234 PM CDT Wed May 20 2026
TXZ068-075-201800-
Pecos TX-Crane TX-
1234 PM CDT Wed May 20 2026
...A STRONG THUNDERSTORM WILL IMPACT NORTH CENTRAL PECOS AND CENTRAL
CRANE COUNTIES THROUGH 100 PM CDT...
At 1234 PM CDT, Doppler radar was tracking a strong thunderstorm 15
miles southeast of Grandfalls, or 19 miles southwest of Crane, moving
northeast at 40 mph.
HAZARD...Nickel size hail.
SOURCE...Radar indicated.
IMPACT...Minor hail damage to vegetation is possible.
Locations impacted include...
Crane, Imperial, Cordona Lake, and Crane County Airport.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3103 10259 3115 10284 3159 10261 3145 10232
3144 10232
TIME...MOT...LOC 1734Z 210DEG 36KT 3123 10263
MAX HAIL SIZE...0.88 IN
MAX WIND GUST...<30 MPH
KLGThe office that day
Everything else NWS Midland/Odessa, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 20, 11:30 AM CDT | Special Weather Statement | MAF | Ector | 30 min |
| May 20, 11:36 AM CDT | Severe Thunderstorm Warning | MAF | Crane, Ector | 24 min |
| May 20, 11:42 AM CDT | Special Weather Statement | MAF | Gaines | 33 min |
| May 20, 11:50 AM CDT | Special Weather Statement | MAF | Andrews | 25 min |
| May 20, 12:00 PM CDT | Special Weather Statement | MAF | Midland | 30 min |
| May 20, 12:09 PM CDT | Special Weather Statement | MAF | Upton | 36 min |
| May 20, 12:14 PM CDT | Special Weather Statement | MAF | Crane | 31 min |
| May 20, 12:34 PM CDT | Special Weather Statement | MAF | Crane | 26 min |
| May 20, 12:41 PM CDT | Flash Flood Warning | MAF | Andrews, Ector | 3 hr |
| May 20, 1:26 PM CDT | Special Weather Statement | MAF | Reagan | 34 min |
| May 20, 2:11 PM CDT | Special Weather Statement | MAF | Borden | 34 min |
| May 20, 2:39 PM CDT | Flash Flood Warning | MAF | Glasscock, Reagan | 3 hr |
| May 20, 3:08 PM CDT | Severe Thunderstorm Warning | MAF | Brewster, Jeff Davis, Presidio | 37 min |
| May 20, 3:23 PM CDT | Severe Thunderstorm Warning | MAF | Brewster | 20 min |
| May 20, 3:42 PM CDT | Severe Thunderstorm Warning | MAF | Brewster, Jeff Davis, Pecos | 33 min |
| May 20, 4:11 PM CDT | Flash Flood Warning | MAF | Brewster, Pecos | 3 hr |
| May 20, 4:13 PM CDT | Severe Thunderstorm Warning | MAF | Brewster, Pecos | 32 min |
| May 20, 4:34 PM CDT | Severe Thunderstorm Warning | MAF | Brewster | 26 min |
| May 20, 4:42 PM CDT | Severe Thunderstorm Warning | MAF | Brewster, Pecos | 33 min |
| May 20, 4:44 PM CDT | Severe Thunderstorm Warning | MAF | Pecos | 31 min |
| May 20, 4:48 PM CDT | Severe Thunderstorm Warning | MAF | Pecos | 27 min |
| May 20, 5:12 PM CDT | Severe Thunderstorm Warning | MAF | Brewster, Pecos, Terrell | 48 min |
| May 20, 5:41 PM CDT | Severe Thunderstorm Warning | MAF | Brewster, Pecos | 18 min |
| May 20, 5:57 PM CDT | Severe Thunderstorm Warning | MAF | Brewster, Pecos, Terrell | 29 min |
| May 20, 6:25 PM CDT | Severe Thunderstorm Warning | MAF | Brewster, Pecos, Terrell | 65 min |
Nearby
Flash Flood Warnings in Texas, 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.