Alert archive / Texas / Flash Flood Watches in 2021
Flash Flood Watch 2, NWS Brownsville, TX
NWS Brownsville, TX issued this flash flood watch at May 18, 2021, 5:15 AM CDT for 8 counties in Texas. It was in force for 38 hr.
The area
The counties it named.
The facts
- Issued
- May 18, 2021, 5:15 AM CDT (10:15 UTC)
- Expired
- May 19, 2021, 7:08 PM CDT
- In force
- 38 hr
- Issued by
- NWS Brownsville, TX
- Flood severity
- None
Counties Brooks County, TX, Cameron County, TX, Hidalgo County, TX, Jim Hogg County, TX, Kenedy County, TX, Starr County, TX, Willacy County, TX, Zapata County, TX
The radar
The Brownsville radar (KBRO), 118 km from the middle of the area, began a volume at 10:18 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 00:00Z, 10.3 hours before the alert went out and 120 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
- 2464 J/kg
- Mixed-layer CIN
- -191 J/kg
- Mixed-layer LCL
- 735 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- -19 m²/s²
- 0-3 km storm-relative helicity
- 79 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.3
The text
As transmitted.
802 WGUS64 KBRO 181015 FFABRO URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Brownsville TX 515 AM CDT Tue May 18 2021 .An upper level low pressure area over New Mexico will continue to move slowly eastwards towards Texas Panhandle tonight and Wednesday. This low pressure area will continue to bring moist and unstable air in place over Deep South Texas maintaining the threat of rainfall over the region through Thursday afternoon. TXZ248>257-351-353-181815- /O.NEW.KBRO.FF.A.0002.210518T1015Z-210520T1800Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Zapata-Jim Hogg-Brooks-Inland Kenedy-Starr-Southern Hidalgo- Inland Willacy-Inland Cameron-Coastal Willacy-Coastal Cameron- Coastal Kenedy-Northern Hidalgo- Including the cities of Zapata, Hebbronville, Falfurrias, Sarita, Rio Grande City, Roma, McAllen, Edinburg, Pharr, Mission, Weslaco, Raymondville, Brownsville, Harlingen, Port Mansfield, Port Isabel, South Padre Island, Laguna Heights, Laguna Vista, and San Manuel 515 AM CDT Tue May 18 2021 ...FLASH FLOOD WATCH IN EFFECT THROUGH THURSDAY AFTERNOON... The National Weather Service in Brownsville has issued a * Flash Flood Watch for a portion of Deep South Texas, including the following areas, Brooks, Coastal Cameron, Coastal Kenedy, Coastal Willacy, Inland Cameron, Inland Kenedy, Inland Willacy, Jim Hogg, Northern Hidalgo, Southern Hidalgo, Starr, and Zapata. * Through Thursday afternoon * Recent heavy rainfall has saturated the ground across portions of deep south Texas. Periods of heavy rainfall are expected tonight through Thursday afternoon. An additional 2 to 5 inches of rainfall is possible across portions of Deep South Texas during this time. Any heavy rain that occurs over a short period of time could cause flooding of low lying areas. * Low-lying and poorly-draining areas near the lower Texas coastline could experience flooding. Heavy rainfall over a short period of time could cause difficulty in driving. Motorists are urged to find alternative routes if flooded roadways are encountered. 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. && $$
6 follow-up statements
360 WGUS64 KBRO 181802 FFABRO Flood Watch National Weather Service Brownsville TX 102 PM CDT Tue May 18 2021 .An upper level low pressure area over New Mexico will continue to move slowly eastwards towards Texas Panhandle tonight and Wednesday. This low pressure area will continue to bring moist and unstable air in place over Deep South Texas maintaining the threat of rainfall over the region through Thursday afternoon. TXZ248>257-351-353-190215- /O.CON.KBRO.FF.A.0002.000000T0000Z-210520T1800Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Zapata-Jim Hogg-Brooks-Inland Kenedy-Starr-Southern Hidalgo-Inland Willacy-Inland Cameron-Coastal Willacy-Coastal Cameron-Coastal Kenedy-Northern Hidalgo- Including the cities of Brownsville, Rio Grande City, Raymondville, Weslaco, Sarita, Zapata, Edinburg, Port Mansfield, Pharr, Mission, Port Isabel, McAllen, South Padre Island, San Manuel, Laguna Heights, Falfurrias, Roma, Harlingen, Hebbronville, and Laguna Vista 102 PM CDT Tue May 18 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THURSDAY AFTERNOON... The Flash Flood Watch continues for * A portion of Deep South Texas, including the following areas, Brooks, Coastal Cameron, Coastal Kenedy, Coastal Willacy, Inland Cameron, Inland Kenedy, Inland Willacy, Jim Hogg, Northern Hidalgo, Southern Hidalgo, Starr and Zapata. * Through Thursday afternoon. * Recent heavy rainfall has saturated the ground across portions of Deep South Texas. Periods of heavy rainfall are expected tonight through Thursday afternoon. An additional 2 to 5 inches of rainfall is possible across portions of Deep South Texas during this time. Any heavy rain that occurs over a short period of time could cause flooding of low lying areas. * Low-lying and poorly-draining areas near the lower Texas coastline could experience flooding. Heavy rainfall over a short period of time could cause difficulty in driving. Motorists are urged to find alternative routes if flooded roadways are encountered. 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. && $$ Tomaselli
298 WGUS64 KBRO 182115 FFABRO Flood Watch National Weather Service Brownsville TX 415 PM CDT Tue May 18 2021 .An upper level low pressure area over New Mexico will continue to move slowly eastwards towards the Texas Panhandle tonight and Wednesday. This low pressure area will continue to bring moist and unstable air over Deep South Texas maintaining the threat of heavy rainfall over the region through Thursday afternoon. TXZ248>257-351-353-190515- /O.CON.KBRO.FF.A.0002.000000T0000Z-210520T1800Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Zapata-Jim Hogg-Brooks-Inland Kenedy-Starr-Southern Hidalgo-Inland Willacy-Inland Cameron-Coastal Willacy-Coastal Cameron-Coastal Kenedy-Northern Hidalgo- Including the cities of Brownsville, Rio Grande City, Raymondville, Weslaco, Sarita, Zapata, Edinburg, Port Mansfield, Pharr, Mission, Port Isabel, McAllen, South Padre Island, San Manuel, Laguna Heights, Falfurrias, Roma, Harlingen, Hebbronville, and Laguna Vista 415 PM CDT Tue May 18 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THURSDAY AFTERNOON... The Flash Flood Watch continues for * A portion of Deep South Texas, including the following areas, Brooks, Coastal Cameron, Coastal Kenedy, Coastal Willacy, Inland Cameron, Inland Kenedy, Inland Willacy, Jim Hogg, Northern Hidalgo, Southern Hidalgo, Starr and Zapata. * Through Thursday afternoon. * Recent heavy rainfall has saturated the ground across portions of Deep South Texas. Periods of heavy rainfall are expected tonight through Thursday afternoon. An additional 1 to 3 inches of rainfall is likely across portions of Deep South Texas during this time with isolated amounts of 4 to 5 inches locally. Any heavy rain that occurs over a short period of time will cause flooding of low lying areas. * Low-lying and poorly-draining areas near the lower Texas coastline could experience flash flooding. Heavy rainfall over a short period of time could cause difficulty in driving. Motorists are urged to find alternative routes if flooded roadways are encountered. 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. && $$ Castillo
292 WGUS64 KBRO 190325 FFABRO Flood Watch National Weather Service Brownsville TX 1025 PM CDT Tue May 18 2021 .An upper level low pressure area over New Mexico will continue to move slowly eastwards towards the Texas Panhandle tonight and Wednesday. This low pressure area will continue to bring moist and unstable air over Deep South Texas maintaining the threat of heavy rainfall over the region through Thursday afternoon. TXZ248>257-351-353-191130- /O.CON.KBRO.FF.A.0002.000000T0000Z-210520T1800Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Zapata-Jim Hogg-Brooks-Inland Kenedy-Starr-Southern Hidalgo-Inland Willacy-Inland Cameron-Coastal Willacy-Coastal Cameron-Coastal Kenedy-Northern Hidalgo- Including the cities of Brownsville, Rio Grande City, Raymondville, Weslaco, Sarita, Zapata, Edinburg, Port Mansfield, Pharr, Mission, Port Isabel, McAllen, South Padre Island, San Manuel, Laguna Heights, Falfurrias, Roma, Harlingen, Hebbronville, and Laguna Vista 1025 PM CDT Tue May 18 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THURSDAY AFTERNOON... The Flash Flood Watch continues for * A portion of Deep South Texas, including the following areas, Brooks, Coastal Cameron, Coastal Kenedy, Coastal Willacy, Inland Cameron, Inland Kenedy, Inland Willacy, Jim Hogg, Northern Hidalgo, Southern Hidalgo, Starr and Zapata. * Through Thursday afternoon. * Recent heavy rainfall has saturated the ground across portions of Deep South Texas. Periods of heavy rainfall are expected tonight through Thursday afternoon. An additional 1 to 3 inches of rainfall is likely across portions of Deep South Texas during this time with isolated amounts of 4 to 5 inches locally. Any heavy rain that occurs over a short period of time will cause flooding of low lying areas. * Low-lying and poorly-draining areas near the lower Texas coastline could experience flash flooding. Heavy rainfall over a short period of time could cause difficulty in driving. Motorists are urged to find alternative routes if flooded roadways are encountered. 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. && $$ Castillo
810 WGUS64 KBRO 190852 FFABRO Flood Watch National Weather Service Brownsville TX 352 AM CDT Wed May 19 2021 .An upper level low pressure system over New Mexico will continue to move slowly eastward towards the Texas Panhandle. This low pressure area will bring moist and unstable air over Deep South Texas and the Rio Grande Valley, maintaining the threat of heavy rainfall over the region through Thursday afternoon. TXZ248>257-351-353-191800- /O.CON.KBRO.FF.A.0002.000000T0000Z-210520T1800Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Zapata-Jim Hogg-Brooks-Inland Kenedy-Starr-Southern Hidalgo-Inland Willacy-Inland Cameron-Coastal Willacy-Coastal Cameron-Coastal Kenedy-Northern Hidalgo- Including the cities of Brownsville, Rio Grande City, Raymondville, Weslaco, Sarita, Zapata, Edinburg, Port Mansfield, Pharr, Mission, Port Isabel, McAllen, South Padre Island, San Manuel, Laguna Heights, Falfurrias, Roma, Harlingen, Hebbronville, and Laguna Vista 352 AM CDT Wed May 19 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THURSDAY AFTERNOON... The Flash Flood Watch continues for * A portion of Deep South Texas, including the following areas, Brooks, Coastal Cameron, Coastal Kenedy, Coastal Willacy, Inland Cameron, Inland Kenedy, Inland Willacy, Jim Hogg, Northern Hidalgo, Southern Hidalgo, Starr and Zapata. * Through Thursday afternoon. * Recent heavy rainfall has saturated the ground across portions of Deep South Texas and the Rio Grande Valley. Periods of heavy rainfall are expected through Thursday afternoon. An additional 1 to 3 inches of precipitation is likely across Deep South Texas and the Rio Grande Valley during this time with isolated amounts of 4 to 5 inches possible. Any heavy rain that occurs over a short period of time will cause flooding of low-lying and poorly-draining areas. * Low-lying and poorly-draining areas could experience flash flooding. Heavy rainfall over a short period of time could cause difficulty in driving. Motorists are urged to find alternative routes if flooded roadways are encountered. 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. && $$ Tomaselli
408 WGUS64 KBRO 191657 FFABRO Flood Watch National Weather Service Brownsville TX 1157 AM CDT Wed May 19 2021 TXZ248>257-351-353-200100- /O.CON.KBRO.FF.A.0002.000000T0000Z-210520T1800Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Zapata-Jim Hogg-Brooks-Inland Kenedy-Starr-Southern Hidalgo-Inland Willacy-Inland Cameron-Coastal Willacy-Coastal Cameron-Coastal Kenedy-Northern Hidalgo- Including the cities of Brownsville, Rio Grande City, Raymondville, Weslaco, Sarita, Zapata, Edinburg, Port Mansfield, Pharr, Mission, Port Isabel, McAllen, South Padre Island, San Manuel, Laguna Heights, Falfurrias, Roma, Harlingen, Hebbronville, and Laguna Vista 1157 AM CDT Wed May 19 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THURSDAY AFTERNOON... The Flash Flood Watch continues for * A portion of Deep South Texas, including the following areas, Brooks, Coastal Cameron, Coastal Kenedy, Coastal Willacy, Inland Cameron, Inland Kenedy, Inland Willacy, Jim Hogg, Northern Hidalgo, Southern Hidalgo, Starr and Zapata. * Through Thursday afternoon. * Recent heavy rainfall has saturated the ground across portions of Deep South Texas and the Rio Grande Valley. Periods of heavy rainfall are expected through Thursday afternoon. An additional 1 to 3 inches of precipitation is likely across Deep South Texas and the Rio Grande Valley during this time with isolated amounts of 4 to 5 inches possible. Any heavy rain that occurs over a short period of time will cause flooding of low-lying and poorly-draining areas. * Low-lying and poorly-draining areas could experience flash flooding. Heavy rainfall over a short period of time could cause difficulty in driving. Motorists are urged to find alternative routes if flooded roadways are encountered. 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. && $$ Hallman
843 WGUS64 KBRO 200008 FFABRO Flood Watch National Weather Service Brownsville TX 708 PM CDT Wed May 19 2021 TXZ248>257-351-353-200115- /O.CAN.KBRO.FF.A.0002.000000T0000Z-210520T1800Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Zapata-Jim Hogg-Brooks-Inland Kenedy-Starr-Southern Hidalgo-Inland Willacy-Inland Cameron-Coastal Willacy-Coastal Cameron-Coastal Kenedy-Northern Hidalgo- Including the cities of Brownsville, Rio Grande City, Raymondville, Weslaco, Sarita, Zapata, Edinburg, Port Mansfield, Pharr, Mission, Port Isabel, McAllen, South Padre Island, San Manuel, Laguna Heights, Falfurrias, Roma, Harlingen, Hebbronville, and Laguna Vista 708 PM CDT Wed May 19 2021 ...FLASH FLOOD WATCH IS CANCELLED... The Flash Flood Watch for a portion of Deep South Texas, including the following areas, Brooks, Coastal Cameron, Coastal Kenedy, Coastal Willacy, Inland Cameron, Inland Kenedy, Inland Willacy, Jim Hogg, Northern Hidalgo, Southern Hidalgo, Starr and Zapata has been cancelled. The Flood Watch is cancelled. Flooding is no longer expected to pose a threat. Please continue to heed remaining road closures. $$ Castillo
The office that day
Everything else NWS Brownsville, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 17, 10:58 PM CDT | Special Weather Statement | BRO | Zapata | 32 min |
| May 17, 11:20 PM CDT | Special Weather Statement | BRO | Zapata | 25 min |
| May 17, 11:42 PM CDT | Special Weather Statement | BRO | Zapata | 33 min |
| May 17, 11:44 PM CDT | Areal Flood Advisory | BRO | Jim Hogg, Zapata | 112 min |
| May 18, 12:13 AM CDT | Special Weather Statement | BRO | Jim Hogg | 32 min |
| May 18, 12:18 AM CDT | Areal Flood Advisory | BRO | Jim Hogg | 3 hr |
| May 18, 12:26 AM CDT | Severe Thunderstorm Warning | BRO | Brooks, Jim Hogg | 34 min |
| May 18, 12:43 AM CDT | Areal Flood Advisory | BRO | Jim Hogg | 3 hr |
| May 18, 12:58 AM CDT | Severe Thunderstorm Warning | BRO | Brooks, Jim Hogg | 32 min |
| May 18, 1:08 AM CDT | Areal Flood Advisory | BRO | Brooks, Jim Hogg | 3 hr |
| May 18, 1:29 AM CDT | Severe Thunderstorm Warning | BRO | Brooks, Kenedy | 31 min |
| May 18, 1:41 AM CDT | Areal Flood Advisory | BRO | Brooks | 3 hr |
| May 18, 2:00 AM CDT | Special Weather Statement | BRO | Brooks | 30 min |
| May 18, 2:02 AM CDT | Areal Flood Advisory | BRO | Brooks, Kenedy | 3 hr |
| May 18, 3:10 AM CDT | Special Marine Warning | BRO | 2 hr | |
| May 18, 3:54 PM CDT | Small Craft Advisory | BRO | 26 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.