Alert archive / Texas / Flash Flood Watches in 2021
Flash Flood Watch 3, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood watch at May 22, 2021, 2:45 PM CDT for 4 counties in Texas. It took effect at May 23, 2021, 1:00 AM CDT. It was in force for 65 hr.
The area
The counties it named.
The facts
- Issued
- May 22, 2021, 2:45 PM CDT (19:45 UTC)
- In effect from
- May 23, 2021, 1:00 AM CDT
- Expired
- May 25, 2021, 5:59 PM CDT
- In force
- 65 hr
- Issued by
- NWS Austin/San Antonio, TX
- Flood severity
- None
Counties DeWitt County, TX, Fayette County, TX, Gonzales County, TX, Lavaca County, TX
The radar
The Austin/San Antonio radar (KEWX), 87 km from the middle of the area, began a volume at 19:46 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 12:00Z, 7.8 hours before the alert went out and 192 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
- 446 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 523 m above ground
- 0-6 km bulk shear
- 5 kt
- 0-1 km storm-relative helicity
- -66 m²/s²
- 0-3 km storm-relative helicity
- 9 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
476 WGUS64 KEWX 221945 FFAEWX URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Austin/San Antonio TX 245 PM CDT Sat May 22 2021 ...Pockets of Locally Heavy Rainfall Possible Sunday... .Tropical moisture will funnel into the region tonight through Monday. Some bands of locally heavy rainfall could set up on Sunday. This area is already saturated from recent rainfall, and any additional heavy rainfall could quickly lead to flooding. TXZ209-223>225-231000- /O.NEW.KEWX.FF.A.0003.210523T0600Z-210524T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Fayette-Gonzales-De Witt-Lavaca- Including the cities of La Grange, Gonzales, Cuero, and Hallettsville 245 PM CDT Sat May 22 2021 ...FLASH FLOOD WATCH IN EFFECT FROM 1 AM CDT SUNDAY THROUGH MONDAY MORNING... The National Weather Service in Austin/San Antonio has issued a * Flash Flood Watch for a portion of south central Texas, including the following areas, De Witt, Fayette, Gonzales, and Lavaca. * From 1 AM CDT Sunday through Monday morning * Rainfall amounts of 1 to 2 inches with localized pockets up to 4 inches possible. * The heavy rainfall could lead to flash flooding of creeks, streams, and low water crossings. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flash Flood Watch means that conditions may develop that lead to flash flooding. Flash flooding is a very dangerous situation. You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$
7 follow-up statements
188 WGUS64 KEWX 230834 FFAEWX URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Austin/San Antonio TX 334 AM CDT Sun May 23 2021 ...Pockets of Locally Heavy Rainfall Possible Sunday and Monday... .Tropical moisture will funnel into the region tonight through Monday. Some bands of locally heavy rainfall could set up on Sunday and Monday. This area is already saturated from recent rainfall, and any additional heavy rainfall could quickly lead to flooding. TXZ209-223>225-231645- /O.EXT.KEWX.FF.A.0003.000000T0000Z-210525T0300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Fayette-Gonzales-De Witt-Lavaca- Including the cities of La Grange, Gonzales, Hallettsville, and Cuero 334 AM CDT Sun May 23 2021 ...FLASH FLOOD WATCH NOW IN EFFECT THROUGH MONDAY EVENING... The Flash Flood Watch is now in effect for * A portion of south central Texas, including the following areas, De Witt, Fayette, Gonzales and Lavaca. * Through Monday evening. * Rainfall amounts of 1 to 3 inches with localized pockets greater than 4 inches possible. * The heavy rainfall could lead to flash flooding of creeks, streams, and low water crossings. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flash Flood Watch means that conditions may develop that lead to flash flooding. Flash flooding is a very dangerous situation. You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ BRADY
562 WGUS64 KEWX 231242 CCA FFAEWX URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch...CORRECTED National Weather Service Austin/San Antonio TX 742 AM CDT Sun May 23 2021 ...Pockets of Locally Heavy Rainfall Possible Sunday and Monday... .Tropical moisture will funnel into the region tonight through Monday. Some bands of locally heavy rainfall could set up on Sunday and Monday. This area is already saturated from recent rainfall, and any additional heavy rainfall could quickly lead to flooding. TXZ209-223>225-231645- /O.COR.KEWX.FF.A.0003.000000T0000Z-210525T0300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Fayette-Gonzales-De Witt-Lavaca- Including the cities of La Grange, Gonzales, Hallettsville, and Cuero 742 AM CDT Sun May 23 2021 ...FLASH FLOOD WATCH NOW IN EFFECT THROUGH MONDAY EVENING... The Flash Flood Watch is now in effect for * A portion of south central Texas, including the following areas, De Witt, Fayette, Gonzales and Lavaca. * Through Monday evening. * Rainfall amounts of 2 to 4 inches with localized pockets greater than 6 inches possible. * The heavy rainfall could lead to flash flooding of creeks, streams, and low water crossings. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flash Flood Watch means that conditions may develop that lead to flash flooding. Flash flooding is a very dangerous situation. You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$
762 WGUS64 KEWX 231922 FFAEWX Flood Watch National Weather Service Austin/San Antonio TX 222 PM CDT Sun May 23 2021 ...Pockets of Locally Heavy Rainfall Possible through Monday... .Tropical moisture will continue to funnel into the region through Monday producing some bands of locally heavy rainfall. This area is already saturated from recent rainfall, and any additional heavy rainfall could quickly lead to flooding. TXZ209-223>225-241100- /O.CON.KEWX.FF.A.0003.000000T0000Z-210525T0300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Fayette-Gonzales-De Witt-Lavaca- Including the cities of La Grange, Gonzales, Cuero, and Hallettsville 222 PM CDT Sun May 23 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH MONDAY EVENING... The Flash Flood Watch continues for * A portion of south central Texas, including the following areas, De Witt, Fayette, Gonzales, and Lavaca. * Through Monday evening * Additional rainfall amounts of 1 to 2 inches expected with localized pockets up to 5 inches possible. * The heavy rainfall could lead to flash flooding of creeks, streams, and low water crossings. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flash Flood Watch means that conditions may develop that lead to flash flooding. Flash flooding is a very dangerous situation. You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$
154 WGUS64 KEWX 240918 FFAEWX Flood Watch National Weather Service Austin/San Antonio TX 418 AM CDT Mon May 24 2021 ...Locally Heavy Rainfall Possible Through This Evening.. .Tropical moisture will continue to funnel across the region producing pockets of locally heavy rainfall. This area remains saturated from recent rainfall, and any additional heavy rainfall may quickly lead to flooding. TXZ209-223>225-250300- /O.CON.KEWX.FF.A.0003.000000T0000Z-210525T0300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Fayette-Gonzales-De Witt-Lavaca- Including the cities of La Grange, Gonzales, Hallettsville, and Cuero 418 AM CDT Mon May 24 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THIS EVENING... The Flash Flood Watch continues for * A portion of south central Texas, including the following areas, De Witt, Fayette, Gonzales and Lavaca. * Through this evening. * Rainfall amounts of 1 to 2 inches with isolated amounts of up to 4 inches possible. * The heavy rainfall could lead to flash flooding of creeks, streams, and low water crossings. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flash Flood Watch means that conditions may develop that lead to flash flooding. Flash flooding is a very dangerous situation. You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ BRADY
086 WGUS64 KEWX 250209 FFAEWX URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Austin/San Antonio TX 909 PM CDT Mon May 24 2021 TXZ209-223>225-251200- /O.EXT.KEWX.FF.A.0003.000000T0000Z-210526T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Fayette-Gonzales-De Witt-Lavaca- Including the cities of La Grange, Gonzales, Hallettsville, and Cuero 909 PM CDT Mon May 24 2021 ...FLASH FLOOD WATCH NOW IN EFFECT THROUGH TUESDAY EVENING... The Flash Flood Watch is now in effect for * A portion of south central Texas, including the following areas, De Witt, Fayette, Gonzales and Lavaca. * Through Tuesday evening. * Rainfall amounts of 1 to 2 inches with isolated amounts of up to 4 inches possible. * The heavy rainfall could lead to flash flooding of creeks, streams, and low water crossings. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flash Flood Watch means that conditions may develop that lead to flash flooding. Flash flooding is a very dangerous situation. You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ HAMPSHIRE
159 WGUS64 KEWX 251050 FFAEWX Flood Watch National Weather Service Austin/San Antonio TX 550 AM CDT Tue May 25 2021 ...Locally Heavy Rainfall Possible Into This Evening... .Tropical moisture will continue to funnel across the region producing pockets of locally heavy rainfall. This area remains saturated from recent rainfall, and any additional heavy rainfall may quickly lead to flooding. TXZ209-223>225-260000- /O.CON.KEWX.FF.A.0003.000000T0000Z-210526T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Fayette-Gonzales-De Witt-Lavaca- Including the cities of La Grange, Gonzales, Hallettsville, and Cuero 550 AM CDT Tue May 25 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT INTO THIS EVENING... The Flash Flood Watch continues for * A portion of south central Texas, including the following areas, De Witt, Fayette, Gonzales and Lavaca. * Through this evening. * Rainfall amounts of 1 to 2 inches with isolated amounts of up to 4 inches possible. * The heavy rainfall could lead to flash flooding of creeks, streams, and low water crossings. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flash Flood Watch means that conditions may develop that lead to flash flooding. Flash flooding is a very dangerous situation. You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ BRADY
055 WGUS64 KEWX 252259 FFAEWX Flood Watch National Weather Service Austin/San Antonio TX 559 PM CDT Tue May 25 2021 TXZ209-223>225-260000- /O.CAN.KEWX.FF.A.0003.000000T0000Z-210526T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Fayette-Gonzales-De Witt-Lavaca- Including the cities of La Grange, Gonzales, Cuero, and Hallettsville 559 PM CDT Tue May 25 2021 ...FLASH FLOOD WATCH IS CANCELLED... The Flash Flood Watch for a portion of south central Texas has been cancelled. The heavy rainfall threat has ended. $$
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 22, 5:09 PM CDT | Areal Flood Advisory | EWX | Blanco, Gillespie, Kendall, Kerr | 3 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.