Alert archive / Texas / Flash Flood Warnings in 2016

Flash Flood Warning 13, NWS Brownsville, TX

August 21, 2016Jim Hogg County, Zapata County, Texas

NWS Brownsville, TX issued this flash flood warning at Aug 21, 2016, 7:47 AM CDT for Jim Hogg County, Zapata County, Texas. It was in force for 88 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
Aug 21, 2016, 7:47 AM CDT (12:47 UTC)
Expired
Aug 21, 2016, 9:15 AM CDT
In force
88 min
Issued by
NWS Brownsville, TX
Area
Storm-based polygon
Flood severity
None

Counties Jim Hogg County, TX, Zapata County, TX

The radar

The Corpus Christi radar (KCRP), 194 km from the middle of the area, began a volume at 12:50 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, 0.8 hours before the alert went out and 206 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 2016-08-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3532 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Corpus Christi, TX at 12:00Z on 2016-08-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -14 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
3532 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
521 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
-14 m²/s²
0-3 km storm-relative helicity
-14 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

848 
WGUS54 KBRO 211247
FFWBRO
TXC247-505-211415-
/O.NEW.KBRO.FF.W.0013.160821T1247Z-160821T1415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
747 AM CDT SUN AUG 21 2016

THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHERN ZAPATA COUNTY IN DEEP SOUTH TEXAS...
  WEST CENTRAL JIM HOGG COUNTY IN DEEP SOUTH TEXAS...

* UNTIL 915 AM CDT

* AT 744 AM CDT...EMERGENCY MANAGEMENT OFFICIALS REPORTED HEAVY RAIN
  ACROSS THE WARNED AREA. BETWEEN 4 AND 8 INCHES OF RAIN HAVE
  ALREADY FALLEN ALONG SR 16 BETWEEN ZAPATA AND ESCOBAS AND NEAR
  RANDADO AS ESTIMATED BY RADAR. FLASH FLOODING IS ALREADY OCCURRING
  AND THERE WERE WATER RESCUES REPORTED IN ZAPATA EARLIER THIS
  MORNING.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  ZAPATA...BUSTAMANTE...MEDINA...ZAPATA MIDDLE SCHOOL...LAS PALMAS...
  ESCOBAS...ZAPATA HIGH SCHOOL...FALCON LAKE ESTATES...ZAPATA COUNTY
  PUBLIC LIBRARY AND FALCON SHORES.

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE POSSIBLE IN THE
WARNED AREA FROM THUNDERSTORMS REDEVELOPING OVER HARD HIT AREAS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DRIVERS ARE URGED TO AVOID SR 16 BETWEEN ZAPATA AND ESCOBAS UNTIL
THE WATERS FULLY RECEDE. THOSE IN FLOOD PRONE AREAS INCLUDING NEAR
MEDINA ADDITION SHOULD MOVE TO HIGHER GROUND NOW THAT DAYBREAK IS
HERE. ACT QUICKLY TO PROTECT YOUR LIFE.

REMAIN ALERT FOR FLOODING EVEN IN LOCATIONS NOT RECEIVING RAIN.
ARROYOS...STREAMS...AND RIVERS CAN BECOME RAGING KILLER CURRENTS IN A
MATTER OF MINUTES...EVEN FROM DISTANT RAINFALL.

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.

&&

LAT...LON 2722 9894 2704 9873 2674 9923 2676 9924
      2679 9924 2682 9926 2685 9927 2686 9929
      2687 9932 2688 9933 2689 9933 2690 9932
      2692 9933 2693 9938

$$

52/BSG
1 follow-up statement
922 
WGUS74 KBRO 211343
FFSBRO

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
843 AM CDT SUN AUG 21 2016

TXC247-505-211415-
/O.CON.KBRO.FF.W.0013.000000T0000Z-160821T1415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ZAPATA TX-JIM HOGG TX-
843 AM CDT SUN AUG 21 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 915 AM CDT FOR
SOUTHERN ZAPATA AND WEST CENTRAL JIM HOGG COUNTIES...

AT 839 AM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
HEAVY RAIN ACROSS CENTRAL ZAPATA COUNTY INCLUDING SR 16 BETWEEN
ZAPATA AND ESCOBAS AND HIGHWAY 83 BETWEEN ZAPATA AND SAN YGNACIO.
FLASH FLOODING IS LIKELY CONTINUING IN SOME OF THESE AREAS.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
ZAPATA...BUSTAMANTE...MEDINA...ZAPATA MIDDLE SCHOOL...LAS PALMAS...
ESCOBAS...ZAPATA HIGH SCHOOL...FALCON LAKE ESTATES...ZAPATA COUNTY
PUBLIC LIBRARY AND FALCON SHORES.

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES IS POSSIBLE IN THE
WARNED AREA ON TOP OF THE 1 INCH THAT HAS FALLEN SINCE 730 AM. IN
TOTAL...AN ESTIMATED 4 TO 8 INCHES HAS FALLEN IN THE WARNED AREA.
THE RAIN BANDS ARE GRADUALLY SHIFTING NORTHWEST AND THE WARNING WILL
LIKELY BE ALLOWED TO EXPIRE AT 915 AM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY. FIND ALTERNATE ROUTES TO SR 16 AND HIGHWAY 83 OUT
OF ZAPATA CITY UNTIL THE RAINS TAPER OFF AND FLOODING SUBSIDES.

&&

LAT...LON 2722 9894 2704 9873 2674 9923 2676 9924
      2679 9924 2682 9926 2685 9927 2686 9929
      2687 9932 2688 9933 2689 9933 2690 9932
      2692 9933 2693 9938

$$

52/BSG

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 21, 12:38 AM CDTAreal Flood AdvisoryBROJim Hogg, Zapata82 min
Aug 21, 12:53 AM CDTSpecial Weather StatementBROJim Hogg37 min
Aug 21, 2:01 AM CDTAreal Flood AdvisoryBROJim Hogg, Zapata89 min
Aug 21, 3:28 AM CDTFlash Flood WarningBROJim Hogg, Zapata4 hr
Aug 21, 3:41 AM CDTSpecial Weather StatementBROZapata34 min
Aug 21, 4:41 AM CDTFlash Flood WarningBROZapata2 hr
Aug 21, 4:56 AM CDTFlash Flood WatchBROBrooks, Jim Hogg, Zapata10 hr
Aug 21, 6:45 AM CDTAreal Flood AdvisoryBROZapata90 min
Aug 21, 8:21 AM CDTAreal Flood AdvisoryBROJim Hogg84 min
Aug 21, 9:03 AM CDTAreal Flood AdvisoryBROZapata57 min
Aug 21, 4:01 PM CDTAreal Flood AdvisoryBROHidalgo, Starr119 min
Aug 21, 4:20 PM CDTSpecial Weather StatementBROStarr55 min
Aug 21, 4:36 PM CDTAreal Flood AdvisoryBROStarr114 min
Aug 21, 5:11 PM CDTAreal Flood AdvisoryBROZapata2 hr
Aug 21, 5:27 PM CDTSpecial Weather StatementBROKenedy48 min
Aug 21, 5:30 PM CDTSpecial Weather StatementBROBrooks45 min
Aug 21, 5:56 PM CDTAreal Flood AdvisoryBROZapata94 min
Aug 21, 6:05 PM CDTSpecial Weather StatementBROKenedy40 min

Nearby

Flash Flood Warnings in Texas, 2016Every flash flood warning in 2016

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.