Alert archive / Texas / Flash Flood Watches in 2015
Flash Flood Watch 11, NWS Brownsville, TX
NWS Brownsville, TX issued this flash flood watch at Sep 11, 2015, 11:47 AM CDT for 4 counties in Texas. It took effect at Sep 11, 2015, 1:00 PM CDT. It was in force for 13 hr.
The area
The counties it named.
The facts
- Issued
- Sep 11, 2015, 11:47 AM CDT (16:47 UTC)
- In effect from
- Sep 11, 2015, 1:00 PM CDT
- Expired
- Sep 12, 2015, 2:00 AM CDT
- In force
- 13 hr
- Issued by
- NWS Brownsville, TX
- Flood severity
- None
Counties Cameron County, TX, Hidalgo County, TX, Starr County, TX, Willacy County, TX
The radar
The Brownsville radar (KBRO), 78 km from the middle of the area, began a volume at 16:49 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, 4.8 hours before the alert went out and 81 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
- 3607 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 581 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- -19 m²/s²
- 0-3 km storm-relative helicity
- 18 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Brownsville, TX wrote its last area forecast discussion before this flash flood watch went out at Sep 11, 6:28 AM CDT, 5 hours 19 minutes earlier.
Area forecast discussion, Sep 11, 6:28 AM CDT, 5 hours 19 minutes before
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</html>Hazardous weather outlook, Sep 11, 3:25 AM CDT, 8 hours 22 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BROWNSVILLE TX 325 AM CDT FRI SEP 11 2015 TXZ248>257-121100- ZAPATA-JIM HOGG-BROOKS-KENEDY-STARR-HIDALGO-INLAND WILLACY- INLAND CAMERON-COASTAL WILLACY-COASTAL CAMERON- 325 AM CDT FRI SEP 11 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF DEEP SOUTH TEXAS. .DAY ONE...TODAY AND TONIGHT SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS WITH LOCALLY HEAVY RAINFALL ARE FORECAST. ANY OF THE HEAVIER...SLOWER- MOVING...OR PERSISTENT SHOWERS AND THUNDERSTORMS WILL HAVE THE ABILITY TO PRODUCE NUISANCE FLOODING IN LOW-LYING AND POORLY- DRAINING AREAS...AND FLASH FLOODING IN AREAS WITH ELEVATION... ESPECIALLY WITHIN ZAPATA...JIM HOGG...AND STARR COUNTIES. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY NUMEROUS SHOWERS AND THUNDERSTORMS WITH LOCALLY HEAVY RAINFALL ARE FORECAST FOR SATURDAY. ANY OF THE HEAVIER...SLOWER-MOVING ...OR PERSISTENT SHOWERS AND THUNDERSTORMS WILL HAVE THE ABILITY TO PRODUCE NUISANCE FLOODING IN LOW-LYING AND POORLY-DRAINING AREAS...AND FLASH FLOODING IN AREAS WITH ELEVATION...ESPECIALLY WITHIN ZAPATA...JIM HOGG...AND STARR COUNTIES. .SPOTTER INFORMATION STATEMENT... ANY OBSERVATIONS OF NUISANCE OR FLASH FLOODING FRIDAY THROUGH SATURDAY SHOULD BE REPORTED TO LOCAL LAW ENFORCEMENT OR THE NATIONAL WEATHER SERVICE OFFICE IN BROWNSVILLE. GMZ130-132-135-150-155-170-175-121100- LAGUNA MADRE FROM THE PORT OF BROWNSVILLE TO THE ARROYO COLORADO- LAGUNA MADRE FROM THE ARROYO COLORADO TO 5 NM NORTH OF PORT MANSFIELD TX- LAGUNA MADRE FROM 5 NM NORTH OF PORT MANSFIELD TO BAFFIN BAY TX- COASTAL WATERS FROM PORT MANSFIELD TO THE RIO GRANDE OUT 20 NM- COASTAL WATERS FROM BAFFIN BAY TO PORT MANSFIELD OUT 20 NM- WATERS FROM PORT MANSFIELD TO THE RIO GRANDE EXTENDING FROM 20 TO 60 NM- WATERS FROM BAFFIN BAY TO PORT MANSFIELD EXTENDING FROM 20 TO 60 NM- 325 AM CDT FRI SEP 11 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF THE GULF OF MEXICO AND THE LAGUNA MADRE. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SKYWARN SPOTTER ACTIVATION WILL NOT BE NEEDED.
The office that day
Everything else NWS Brownsville, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 10, 7:01 PM CDT | Special Weather Statement | BRO | Jim Hogg | 44 min |
| Sep 10, 7:26 PM CDT | Areal Flood Advisory | BRO | Brooks, Jim Hogg | 94 min |
| Sep 10, 7:35 PM CDT | Special Weather Statement | BRO | Jim Hogg | 25 min |
| Sep 10, 8:40 PM CDT | Special Weather Statement | BRO | Jim Hogg | 50 min |
| Sep 10, 9:45 PM CDT | Special Weather Statement | BRO | Starr | 45 min |
| Sep 10, 9:56 PM CDT | Areal Flood Advisory | BRO | Starr, Zapata | 94 min |
| Sep 11, 3:57 PM CDT | Special Weather Statement | BRO | Brooks | 93 min |
| Sep 11, 4:13 PM CDT | Special Marine Warning | BRO | 2 hr | |
| Sep 11, 4:33 PM CDT | Areal Flood Advisory | BRO | Kenedy | 117 min |
| Sep 11, 4:47 PM CDT | Special Weather Statement | BRO | Hidalgo | 43 min |
| Sep 11, 5:03 PM CDT | Special Weather Statement | BRO | Kenedy | 57 min |
| Sep 11, 5:12 PM CDT | Special Weather Statement | BRO | Willacy | 48 min |
| Sep 11, 5:18 PM CDT | Areal Flood Advisory | BRO | Cameron, Hidalgo | 87 min |
| Sep 11, 5:23 PM CDT | Severe Thunderstorm Warning | BRO | Willacy | 52 min |
| Sep 11, 5:29 PM CDT | Areal Flood Advisory | BRO | Willacy | 2 hr |
| Sep 11, 5:37 PM CDT | Tornado Warning | BRO | Willacy | 23 min |
| Sep 11, 5:46 PM CDT | Special Weather Statement | BRO | Hidalgo | 59 min |
| Sep 11, 5:54 PM CDT | Special Marine Warning | BRO | 2 hr | |
| Sep 11, 5:59 PM CDT | Areal Flood Advisory | BRO | Kenedy, Willacy | 2 hr |
| Sep 11, 6:15 PM CDT | Special Weather Statement | BRO | Hidalgo | 60 min |
| Sep 11, 6:25 PM CDT | Special Weather Statement | BRO | Hidalgo, Willacy | 50 min |
| Sep 11, 6:33 PM CDT | Special Weather Statement | BRO | Hidalgo | 57 min |
| Sep 11, 6:48 PM CDT | Special Marine Warning | BRO | 117 min | |
| Sep 11, 6:53 PM CDT | Areal Flood Advisory | BRO | Cameron, Hidalgo, Willacy | 112 min |
Nearby
Flash Flood Watches in Texas, 2015Every flash flood watch in 2015
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.