Alert archive / Texas / Flash Flood Watches in 2006

Flash Flood Watch 7, NWS Brownsville, TX

September 24, 20068 counties in Texas

NWS Brownsville, TX issued this flash flood watch at Sep 24, 2006, 1:45 AM CDT for 8 counties in Texas. It took effect at Sep 24, 2006, 1:00 PM CDT. It was in force for 12 hr.

The area

The counties it named.

The facts

Issued
Sep 24, 2006, 1:45 AM CDT (06:45 UTC)
In effect from
Sep 24, 2006, 1:00 PM CDT
Expired
Sep 25, 2006, 12:35 AM CDT
In force
12 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 06:43 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, 6.8 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.

Skew-T log-pSkew-T log-p diagram, Brownsville Intl, TX at 00:00Z on 2006-09-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3959 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brownsville Intl, TX at 00:00Z on 2006-09-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 32 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
3959 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
762 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
32 m²/s²
0-3 km storm-relative helicity
100 m²/s²
Significant tornado parameter
0.7
Supercell composite
4.1

Open this sounding in Storm Lab

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 23, 8:15 PM CDT, 5 hours 30 minutes earlier.

Area forecast discussion, Sep 23, 8:15 PM CDT, 5 hours 30 minutes before
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Hazardous weather outlook, Sep 23, 5:00 AM CDT, 20 hours 45 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BROWNSVILLE TX
500 AM CDT SAT SEP 23 2006

TXZ248>257-241100-
ZAPATA-JIM HOGG-BROOKS-KENEDY-STARR-HIDALGO-INLAND WILLACY-
INLAND CAMERON-COASTAL WILLACY-COASTAL CAMERON-
500 AM CDT SAT SEP 23 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR DEEP SOUTH TEXAS.

.DAY ONE...TODAY AND TONIGHT

A SMALL CRAFT ADVISORY IS IN EFFECT FOR THE GULF WATERS OF DEEP
SOUTH TEXAS THROUGH NOON...AND ALL MARINE AREAS THROUGH 8 PM.
THESE WIND AND SEA CONDITIONS WILL ALSO PRODUCE A HIGH RISK OF RIP
CURRENTS TODAY FOR THE BEACHES OF SOUTH PADRE ISLAND AND BOCA CHICA.
OTHERWISE...NO OTHER HAZARDOUS WEATHER IS EXPECTED.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

STRONG THUNDERSTORM DEVELOPMENT WITH HEAVY RAINFALL IS EXPECTED
SUNDAY THROUGH MONDAY. ROADWAY PONDING AND FLOODING OF LOW LYING
AREAS OF THE RIO GRANDE VALLEY CAN BE EXPECTED GENERALLY SUNDAY
AFTERNOON THROUGH MONDAY MORNING. SMALL CRAFT ADVISORIES MAY BE
NEEDED FOR THE MARINE AREAS OF DEEP SOUTH TEXAS THROUGH TUESDAY...AS
STRONG SOUTHERLY WINDS ARE EXPECTED PRIOR TO COLD FRONTAL PASSAGE
SUNDAY AFTERNOON. NORTHEAST WINDS WILL INCREASE TO 20 TO 25 KNOTS
LATE SUNDAY THROUGH MONDAY. A HIGH RISK OF RIP CURRENTS ESPECIALLY
DURING LOW TIDES IS ANTICIPATED FOR THE BEACHES OF SOUTH PADRE
ISLAND AND BOCA CHICA THROUGH THE PERIOD. MARINERS SHOULD BE AWARE
THAT SEAS AND WINDS WILL ALWAYS BE HIGHER THAN FORECAST IN AND NEAR
THUNDERSTORMS. NO OTHER HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTER ACTIVATION IS NOT EXPECTED.

PHILO

The office that day

Everything else NWS Brownsville, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 24, 1:32 AM CDTMarine Weather StatementBRO11 hr
Sep 24, 4:05 AM CDTFlash Flood WarningBROZapata85 min
Sep 24, 4:11 AM CDTSevere Thunderstorm WarningBROZapata64 min
Sep 24, 4:24 AM CDTFlash Flood WarningBROBrooks, Kenedy96 min
Sep 24, 4:53 AM CDTSpecial Marine WarningBRO97 min
Sep 24, 5:12 AM CDTSevere Thunderstorm WarningBROStarr, Zapata63 min
Sep 24, 5:45 AM CDTFlash Flood WarningBROStarr60 min
Sep 24, 5:48 AM CDTFlash Flood WarningBROHidalgo, Kenedy, Willacy57 min
Sep 24, 6:02 AM CDTSevere Thunderstorm WarningBROHidalgo28 min
Sep 24, 6:43 AM CDTSevere Thunderstorm WarningBROCameron, Hidalgo, Willacy47 min
Sep 24, 7:29 AM CDTSevere Thunderstorm WarningBROCameron, Hidalgo31 min
Sep 24, 7:57 AM CDTSpecial Marine WarningBRO2 hr
Sep 24, 11:44 AM CDTFlash Flood WarningBROHidalgo2 hr

Nearby

Flash Flood Watches in Texas, 2006Every flash flood watch in 2006

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.