Alert archive / Texas / Flash Flood Watches in 2021
Flash Flood Watch 5, NWS Brownsville, TX
NWS Brownsville, TX issued this flash flood watch at Sep 12, 2021, 10:18 AM CDT for Cameron County, Kenedy County, Willacy County, Texas. It took effect at Sep 12, 2021, 7:00 PM CDT. It was in force for 21 hr.
The area
The counties it named.
The facts
- Issued
- Sep 12, 2021, 10:18 AM CDT (15:18 UTC)
- In effect from
- Sep 12, 2021, 7:00 PM CDT
- Expired
- Sep 13, 2021, 3:38 PM CDT
- In force
- 21 hr
- Issued by
- NWS Brownsville, TX
- Flood severity
- None
Counties Cameron County, TX, Kenedy County, TX, Willacy County, TX
The radar
The Brownsville radar (KBRO), 69 km from the middle of the area, began a volume at 15:18 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
Brownsville Intl, TX (KBRO), launched 12:00Z, 3.3 hours before the alert went out and 71 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
- 1564 J/kg
- Mixed-layer CIN
- -13 J/kg
- Mixed-layer LCL
- 874 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 8 m²/s²
- 0-3 km storm-relative helicity
- 3 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
174 WGUS64 KBRO 121518 FFABRO URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Brownsville TX 1018 AM CDT Sun Sep 12 2021 .Heavy rain associated with Tropical Storm Nicholas will bring the potential for flash flooding across Cameron, Willacy and Kenedy counties tonight through early Tuesday morning. TXZ251-254>257-351-122330- /O.NEW.KBRO.FF.A.0005.210913T0000Z-210914T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Inland Kenedy-Inland Willacy-Inland Cameron-Coastal Willacy-Coastal Cameron-Coastal Kenedy- Including the cities of Raymondville, Sarita, Laguna Vista, South Padre Island, Port Mansfield, Port Isabel, Laguna Heights, Harlingen, and Brownsville 1018 AM CDT Sun Sep 12 2021 ...FLASH FLOOD WATCH IN EFFECT FROM 7 PM CDT THIS EVENING THROUGH TUESDAY MORNING... The National Weather Service in Brownsville has issued a * Flash Flood Watch for a portion of Deep South Texas, including the following areas, Coastal Cameron, Coastal Kenedy, Coastal Willacy, Inland Cameron, Inland Kenedy and Inland Willacy. * From 7 PM CDT this evening through Tuesday morning. * Scattered to numerous showers and thunderstorms producing locally heavy rainfall will be possible across the eastern portions of Deep South Texas tonight into early Tuesday morning. Rainfall amounts of 2 to 4 inches are expected across these areas with locally higher amounts possible. * Low-lying and poorly-draining areas may experience flash flooding. Heavy rainfall over a short period of time will cause difficulty in driving. Motorists are urged to find alternative routes if flooding roadways are encountered. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ AM
3 follow-up statements
834 WGUS64 KBRO 122156 FFABRO Flood Watch National Weather Service Brownsville TX 456 PM CDT Sun Sep 12 2021 .Heavy rain associated with Tropical Storm Nicholas will bring the potential for flash flooding across Cameron, Willacy and Kenedy counties tonight through early Tuesday morning. TXZ251-254>257-351-130600- /O.CON.KBRO.FF.A.0005.210913T0000Z-210914T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Inland Kenedy-Inland Willacy-Inland Cameron-Coastal Willacy-Coastal Cameron-Coastal Kenedy- Including the cities of Raymondville, Sarita, Laguna Vista, South Padre Island, Port Mansfield, Port Isabel, Laguna Heights, Harlingen, and Brownsville 456 PM CDT Sun Sep 12 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH TUESDAY MORNING... The Flash Flood Watch continues for * A portion of Deep South Texas, including the following areas, Coastal Cameron, Coastal Kenedy, Coastal Willacy, Inland Cameron, Inland Kenedy and Inland Willacy. * Through Tuesday morning. * Scattered to numerous showers and thunderstorms producing locally heavy rainfall will be possible across the eastern portions of Deep South Texas tonight into early Tuesday morning. Rainfall amounts of 2 to 4 inches are expected across these areas with locally higher amounts possible. * Low-lying and poorly-draining areas may experience flash flooding. Heavy rainfall over a short period of time will cause difficulty in driving. Motorists are urged to find alternative routes if flooding roadways are encountered. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ AM
891 WGUS64 KBRO 130532 FFABRO Flood Watch National Weather Service Brownsville TX 1232 AM CDT Mon Sep 13 2021 .Heavy rain associated with Tropical Storm Nicholas will bring the potential for flash flooding across Cameron, Willacy and Kenedy counties tonight through early Tuesday morning. TXZ251-254>257-351-131400- /O.CON.KBRO.FF.A.0005.000000T0000Z-210914T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Inland Kenedy-Inland Willacy-Inland Cameron-Coastal Willacy-Coastal Cameron-Coastal Kenedy- Including the cities of Raymondville, Sarita, Laguna Vista, South Padre Island, Port Mansfield, Port Isabel, Laguna Heights, Harlingen, and Brownsville 1232 AM CDT Mon Sep 13 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH TUESDAY MORNING... The Flash Flood Watch continues for * A portion of Deep South Texas, including the following areas, Coastal Cameron, Coastal Kenedy, Coastal Willacy, Inland Cameron, Inland Kenedy and Inland Willacy. * Through Tuesday morning. * Scattered to numerous showers and thunderstorms producing locally heavy rainfall will be possible across the eastern portions of Deep South Texas tonight into early Tuesday morning. Rainfall amounts of 2 to 4 inches are expected across these areas with locally higher amounts possible. * Low-lying and poorly-draining areas may experience flash flooding. Heavy rainfall over a short period of time will cause difficulty in driving. Motorists are urged to find alternative routes if flooding roadways are encountered. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ Farris
761 WGUS64 KBRO 132038 FFABRO Flood Watch National Weather Service Brownsville TX 338 PM CDT Mon Sep 13 2021 TXZ251-254>257-351-132145- /O.CAN.KBRO.FF.A.0005.000000T0000Z-210914T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Inland Kenedy-Inland Willacy-Inland Cameron-Coastal Willacy-Coastal Cameron-Coastal Kenedy- Including the cities of Raymondville, Sarita, Laguna Vista, South Padre Island, Port Mansfield, Port Isabel, Laguna Heights, Harlingen, and Brownsville 338 PM CDT Mon Sep 13 2021 ...FLASH FLOOD WATCH IS CANCELLED... The Flash Flood Watch for a portion of Deep South Texas, including the following areas, Coastal Cameron, Coastal Kenedy, Coastal Willacy, Inland Cameron, Inland Kenedy and Inland Willacy has been cancelled. Flooding is no longer expected to pose a threat. Please continue to heed remaining road closures. $$
The office that day
Everything else NWS Brownsville, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 12, 10:11 AM CDT | Storm Surge Watch | BRO | Kenedy | 23 hr |
| Sep 12, 10:11 AM CDT | Tropical Storm Warning | BRO | Kenedy | 36 hr |
| Sep 12, 11:18 AM CDT | Rip Current Statement | BRO | Kenedy | 44 hr |
| Sep 12, 11:18 AM CDT | High Surf Advisory | BRO | Kenedy | 44 hr |
Nearby
Flash Flood Watches in Texas, 2021Every flash flood watch 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.