Alert archive / Texas / Flash Flood Warnings in 2010

Flash Flood Warning 21, NWS Brownsville, TX

June 30, 2010Cameron County, Hidalgo County, Texas

NWS Brownsville, TX issued this flash flood warning at Jun 30, 2010, 5:30 PM CDT for Cameron County, Hidalgo County, Texas. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jun 30, 2010, 5:30 PM CDT (22:30 UTC)
Expired
Jun 30, 2010, 7:30 PM CDT
In force
2 hr
Issued by
NWS Brownsville, TX
Area
Storm-based polygon
Flood severity
None

Counties Cameron County, TX, Hidalgo County, TX

The radar

The Brownsville radar (KBRO), 79 km from the middle of the area, began a volume at 22:31 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, 10.5 hours before the alert went out and 82 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 12:00Z on 2010-06-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 880 joules per kilogram.LCLEL10008507005003002001001 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 12:00Z on 2010-06-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 181 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
880 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
501 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
181 m²/s²
0-3 km storm-relative helicity
174 m²/s²
Significant tornado parameter
0.5
Supercell composite
4.4

Open this sounding in Storm Lab

The text

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

727 
WGUS54 KBRO 302230
FFWBRO
TXC061-215-010030-
/O.NEW.KBRO.FF.W.0021.100630T2230Z-100701T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
530 PM CDT WED JUN 30 2010

THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  HIDALGO COUNTY IN DEEP SOUTH TEXAS.
  SOUTHWESTERN CAMERON COUNTY IN DEEP SOUTH TEXAS.

  LOCATIONS AFFECTED INCLUDE...
  LA FERIA.
  LOS EBANOS.
  LINN.
  HIDALGO.
  SAN MANUEL.
  MCCOOK.
  WESLACO.
  SAN JUAN.
  PHARR.
  MISSION.
  MERCEDES.
  MCALLEN.
  EDINBURG.
  EDCOUCH.
  DONNA.
  ALAMO.


* UNTIL 730 PM CDT

* AT 522 PM CDT...SCATTERED AREAS OF FLOODING HAVE BEEN REPORTED 
WITH RAINFALL AMOUNTS OF 3 TO 6 INCHES HAVING OCCURRED ACROSS THE 
WARNED AREA TODAY. ADDITIONAL RAINFALL IS EXPECTED THIS EVENING WITH 
AN ADDITIONAL 1 TO 3 INCHES OF RAIN POSSIBLE AS RAIN BANDS 
ASSOCIATED WITH HURRICANE ALEX CONTINUE TO AFFECT THE AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROAD.
THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY.
MOVE TO HIGHER GROUND.

DON'T BECOME A STATISTIC. TURN AROUND...DON'T DROWN!

&&

LAT...LON 2603 9780 2606 9781 2606 9800 2604 9805
      2606 9809 2607 9826 2611 9833 2615 9835
      2615 9839 2618 9844 2622 9846 2621 9849
      2620 9849 2626 9860 2664 9825 2661 9797
      2647 9800 2645 9788 2627 9786 2603 9768

$$

HART

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 30, 5:43 AM CDTAreal Flood AdvisoryBROHidalgo2 hr
Jun 30, 7:54 AM CDTAreal Flood AdvisoryBROCameron111 min
Jun 30, 10:03 AM CDTAreal Flood AdvisoryBROCameron87 min
Jun 30, 10:08 AM CDTTornado WarningBROCameron37 min
Jun 30, 11:21 AM CDTSpecial Marine WarningBRO24 min
Jun 30, 11:36 AM CDTAreal Flood AdvisoryBROCameron, Hidalgo, Willacy114 min
Jun 30, 12:06 PM CDTTornado WarningBROWillacy24 min
Jun 30, 12:28 PM CDTTornado WarningBROHidalgo, Kenedy, Willacy32 min
Jun 30, 12:46 PM CDTSpecial Marine WarningBRO44 min
Jun 30, 12:49 PM CDTTornado WarningBROJim Hogg, Starr26 min
Jun 30, 1:02 PM CDTTornado WarningBROCameron43 min
Jun 30, 1:14 PM CDTAreal Flood AdvisoryBROKenedy91 min
Jun 30, 1:32 PM CDTSpecial Marine WarningBRO58 min
Jun 30, 1:46 PM CDTTornado WarningBROCameron14 min
Jun 30, 1:52 PM CDTFlash Flood WarningBROCameron3 hr
Jun 30, 2:17 PM CDTTornado WarningBROCameron28 min
Jun 30, 2:42 PM CDTTornado WarningBROCameron33 min
Jun 30, 3:05 PM CDTFlash Flood WarningBROCameron, Willacy115 min
Jun 30, 3:28 PM CDTFlash Flood WarningBROCameron, Hidalgo2 hr
Jun 30, 3:40 PM CDTSpecial Marine WarningBRO35 min
Jun 30, 3:59 PM CDTTornado WarningBROCameron, Hidalgo, Willacy16 min
Jun 30, 4:05 PM CDTTornado WarningBROHidalgo, Willacy25 min
Jun 30, 4:16 PM CDTTornado WarningBROCameron, Willacy29 min
Jun 30, 4:23 PM CDTTornado WarningBROHidalgo, Willacy22 min
Jun 30, 4:46 PM CDTFlash Flood WarningBROCameron119 min
Jun 30, 5:11 PM CDTFlash Flood WarningBROCameron, Willacy2 hr
Jun 30, 6:33 PM CDTTornado WarningBROCameron12 min
Jun 30, 6:45 PM CDTFlash Flood WarningBROCameron4 hr

Nearby

Flash Flood Warnings in Texas, 2010Every flash flood warning in 2010

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.