Alert archive / Texas / Flash Flood Warnings in 2008

Flash Flood Warning 2, NWS Brownsville, TX

May 5, 2008Brooks County, Texas

NWS Brownsville, TX issued this flash flood warning at May 5, 2008, 9:37 AM CDT for Brooks County, Texas. It was in force for 83 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
May 5, 2008, 9:37 AM CDT (14:37 UTC)
Expired
May 5, 2008, 11:00 AM CDT
In force
83 min
Issued by
NWS Brownsville, TX
Area
Storm-based polygon
Flood severity
None

County Brooks County, TX

The radar

The Corpus Christi radar (KCRP), 113 km from the middle of the area, began a volume at 14:36 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, 2.6 hours before the alert went out and 123 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, Corpus Christi, TX at 12:00Z on 2008-05-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1559 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, Corpus Christi, TX at 12:00Z on 2008-05-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 71 square meters per square second.193958Sfc1 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
1559 J/kg
Mixed-layer CIN
-22 J/kg
Mixed-layer LCL
591 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
71 m²/s²
0-3 km storm-relative helicity
142 m²/s²
Significant tornado parameter
0.4
Supercell composite
2.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS54 KBRO 051437
FFWBRO
TXC047-051600-
/O.NEW.KBRO.FF.W.0002.080505T1437Z-080505T1600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
937 AM CDT MON MAY 5 2008

THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHWESTERN BROOKS COUNTY IN DEEP SOUTH TEXAS.

  LOCATIONS AFFECTED INCLUDE...

* UNTIL 1100 AM CDT

* AT 929 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  TORRENTIAL RAIN OF THREE INCHES PER HOUR FROM A THUNDERSTORM OVER
  THE WARNED AREA.

WIDESPREAD FLOODING IS OCCURRING...OR WILL OCCUR...IN THE WARNED
AREA. ALL STREAMS WILL FLOOD...AS WILL FAST RISING RIVERS. NUMEROUS
ROADS WILL BE CLOSED...AND LIVESTOCK WILL BE LOST. MOVE TO HIGHER
GROUND IMMEDIATELY

DONT BECOME A STATISTIC. TURN AROUND...DONT DROWN

&&

LAT...LON 2706 9843 2707 9848 2714 9848 2715 9850
      2720 9852 2724 9850 2728 9854 2729 9830
      2727 9829 2727 9820 2698 9818 2697 9844
TIME...MOT...LOC 1437Z 180DEG 0KT 2716 9840

$$

64

The office that day

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

IssuedProductOfficeCountiesLasted
May 5, 7:06 AM CDTSevere Thunderstorm WarningBROZapata24 min
May 5, 7:30 AM CDTSevere Thunderstorm WarningBROZapata45 min
May 5, 8:01 AM CDTSevere Thunderstorm WarningBROJim Hogg, Zapata44 min
May 5, 8:36 AM CDTFlash Flood WarningBROJim Hogg, Zapata114 min
May 5, 9:04 AM CDTSevere Thunderstorm WarningBROBrooks, Jim Hogg56 min

Nearby

Flash Flood Warnings in Texas, 2008Every flash flood warning in 2008

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.