Alert archive / Texas / Flash Flood Warnings in 2021
Flash Flood Warning 36, NWS Brownsville, TX
NWS Brownsville, TX issued this flash flood warning at Aug 3, 2021, 3:17 AM CDT for Zapata County, Texas. It was in force for 105 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 3, 2021, 3:17 AM CDT (08:17 UTC)
- Expired
- Aug 3, 2021, 5:02 AM CDT
- In force
- 105 min
- Issued by
- NWS Brownsville, TX
- Area
- Storm-based polygon
- Flood severity
- None
County Zapata County, TX
The radar
The Corpus Christi radar (KCRP), 204 km from the middle of the area, began a volume at 08:17 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.
The nearest sounding before it
Corpus Christi, TX (KCRP), launched 00:00Z, 8.3 hours before the alert went out and 218 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
- 2590 J/kg
- Mixed-layer CIN
- -28 J/kg
- Mixed-layer LCL
- 1057 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 10 m²/s²
- 0-3 km storm-relative helicity
- 30 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
741
WGUS54 KBRO 030817
FFWBRO
TXC505-031015-
/O.NEW.KBRO.FF.W.0036.210803T0817Z-210803T1015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Brownsville TX
317 AM CDT Tue Aug 3 2021
The National Weather Service in Brownsville has issued a
* Flash Flood Warning for...
Western Zapata County in deep south Texas...
* Until 515 AM CDT.
* At 317 AM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2 and 4 inches of rain
have fallen. The expected rainfall rate is 1 to 2 inches in 1
hour. 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.
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...
mainly rural areas of Western Zapata County
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 2701 9941 2703 9939 2702 9937 2699 9934
2697 9934 2697 9938 2698 9938 2698 9939
2699 9939 2700 9940
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1-2 INCHES IN 1 HOUR
$$
Hallman3 follow-up statements
322
WGUS74 KBRO 030848
FFSBRO
Flash Flood Statement
National Weather Service Brownsville TX
348 AM CDT Tue Aug 3 2021
TXC505-031015-
/O.CON.KBRO.FF.W.0036.000000T0000Z-210803T1015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Zapata TX-
348 AM CDT Tue Aug 3 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 515 AM CDT EARLY THIS
MORNING FOR WESTERN ZAPATA COUNTY...
At 348 AM CDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Between 2 and 5 inches of rain have
fallen. The expected rainfall rate is 0.5 to 1 inch in 1 hour.
Additional rainfall amounts of 0.5 to 1.5 inches are possible in the
warned area. Flash flooding is ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
mainly rural areas of Western Zapata County
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 2701 9941 2703 9939 2702 9937 2699 9934
2697 9934 2697 9938 2698 9938 2698 9939
2699 9939 2700 9940
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...0.5-1 INCH IN 1 HOUR
$$
Hallman404
WGUS74 KBRO 030938
FFSBRO
Flash Flood Statement
National Weather Service Brownsville TX
438 AM CDT Tue Aug 3 2021
TXC505-031015-
/O.CON.KBRO.FF.W.0036.000000T0000Z-210803T1015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Zapata TX-
438 AM CDT Tue Aug 3 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 515 AM CDT EARLY THIS
MORNING FOR WESTERN ZAPATA COUNTY...
At 438 AM CDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Between 3 and 5 inches of rain have
fallen. The expected rainfall rate is 0.25 inches in 1 hour.
Additional rainfall amounts up to 0.5 inches are possible in the
warned area. Flash flooding is ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
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...
mainly rural areas of Western Zapata County
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 2701 9941 2703 9939 2702 9937 2699 9934
2697 9934 2697 9938 2698 9938 2698 9939
2699 9939 2700 9940
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...0.25 INCHES IN 1 HOUR
$$
Hallman754
WGUS74 KBRO 031002
FFSBRO
Flash Flood Statement
National Weather Service Brownsville TX
502 AM CDT Tue Aug 3 2021
TXC505-031012-
/O.CAN.KBRO.FF.W.0036.000000T0000Z-210803T1015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Zapata TX-
502 AM CDT Tue Aug 3 2021
...FLASH FLOOD WARNING IS CANCELLED FOR WESTERN ZAPATA COUNTY...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
LAT...LON 2701 9941 2703 9939 2702 9937 2699 9934
2697 9934 2697 9938 2698 9938 2698 9939
2699 9939 2700 9940
$$
HallmanThe office that day
Everything else NWS Brownsville, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 2, 11:03 PM CDT | Areal Flood Advisory | BRO | Starr | 86 min |
| Aug 2, 11:19 PM CDT | Special Weather Statement | BRO | Starr | 41 min |
| Aug 3, 1:02 AM CDT | Areal Flood Advisory | BRO | Hidalgo, Starr | 103 min |
| Aug 3, 1:30 AM CDT | Special Weather Statement | BRO | Zapata | 45 min |
| Aug 3, 1:45 AM CDT | Special Weather Statement | BRO | Hidalgo | 45 min |
| Aug 3, 2:14 AM CDT | Special Weather Statement | BRO | Zapata | 46 min |
| Aug 3, 2:16 AM CDT | Areal Flood Advisory | BRO | Zapata | 4 hr |
| Aug 3, 2:22 AM CDT | Areal Flood Advisory | BRO | Hidalgo | 73 min |
| Aug 3, 2:29 AM CDT | Special Weather Statement | BRO | Hidalgo | 31 min |
| Aug 3, 2:59 AM CDT | Special Weather Statement | BRO | Zapata | 46 min |
| Aug 3, 3:20 AM CDT | Areal Flood Advisory | BRO | Zapata | 3 hr |
| Aug 3, 3:44 AM CDT | Special Weather Statement | BRO | Zapata | 31 min |
| Aug 3, 4:20 AM CDT | Flash Flood Warning | BRO | Zapata | 44 min |
| Aug 3, 4:30 AM CDT | Special Weather Statement | BRO | Zapata | 30 min |
| Aug 3, 5:47 AM CDT | Special Weather Statement | BRO | Starr | 43 min |
| Aug 3, 6:12 AM CDT | Areal Flood Advisory | BRO | Starr | 2 hr |
| Aug 3, 6:13 AM CDT | Areal Flood Advisory | BRO | Hidalgo | 2 hr |
| Aug 3, 2:05 PM CDT | Special Weather Statement | BRO | Starr | 55 min |
| Aug 3, 4:33 PM CDT | Areal Flood Advisory | BRO | Brooks, Kenedy | 57 min |
| Aug 3, 4:37 PM CDT | Special Weather Statement | BRO | Brooks | 38 min |
| Aug 3, 4:43 PM CDT | Special Weather Statement | BRO | Kenedy | 47 min |
| Aug 3, 5:15 PM CDT | Special Weather Statement | BRO | Jim Hogg | 45 min |
| Aug 3, 6:14 PM CDT | Areal Flood Advisory | BRO | Cameron, Hidalgo | 61 min |
Nearby
Flash Flood Warnings in Texas, 2021Every flash flood warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.