Alert archive / Texas / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 29, NWS Brownsville, TX

May 22, 2003Brooks County, Texas

NWS Brownsville, TX issued this severe thunderstorm warning at May 22, 2003, 6:40 PM CDT for Brooks County, Texas. It was in force for 50 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 22, 2003, 6:40 PM CDT (23:40 UTC)
Expired
May 22, 2003, 7:30 PM CDT
In force
50 min
Issued by
NWS Brownsville, TX
Area
Counties, with a storm outline in the text

County Brooks County, TX

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 12:00Z, 11.7 hours before the alert went out and 109 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 2003-05-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 606 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 2003-05-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 37 square meters per square second.19395878Sfc1 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
606 J/kg
Mixed-layer CIN
-68 J/kg
Mixed-layer LCL
613 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
37 m²/s²
0-3 km storm-relative helicity
78 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.5

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KBRO 222340
SVRBRO
TXC047-230030-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
639 PM CDT THU MAY 22 2003

THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN BROOKS COUNTY IN DEEP SOUTH TEXAS

* UNTIL 730 PM CDT

* AT 638 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A SEVERE
  THUNDERSTORM. WINDS OF 60 MPH AND HAIL ONE HALF OF AN INCH IN
  DIAMETER WAS OBSERVED. THIS STORM WAS LOCATED 10 MILES SOUTHWEST OF
  FALFURRIAS...AND MOVING SOUTHEAST AT 10 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  ENCINO BY 725 PM CDT.

LAT...LON 2722 9824 2707 9835 2685 9804 2706 9798

$$

MI

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at May 22, 3:30 PM CDT, 3 hours 10 minutes earlier.

Area forecast discussion, May 22, 3:30 PM CDT, 3 hours 10 minutes before
DEEP SOUTH TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BROWNSVILLE TX
330 PM CDT THU MAY 22 2003

VISIBLE SATELLITE IMAGERY INDICATES THAT ONE OR TWO CELLS OF DEEP
CONVECTION PERSIST BETWEEN DEL RIO AND LAREDO EXTENDING EAST TO
COTULLA. THESE STORMS WERE MOVING TOWARD THE SOUTHEAST PARALLELING
THE RIO GRANDE. THERE WAS ALSO AN AREA OF STORMS ABOUT 75 MILES
SOUTH OF RIO GRANDE CITY MOVING IN A SIMILAR DIRECTION AND
WEAKENING. THUS...INSTABILITY IS STILL PRESENT IN AREAS AROUND DEEP
SOUTH TEXAS. MODEL COMPARISONS DEPICT A SMILE-SHAPED MID-LEVEL SHORT
WAVE STILL IN THE PROCESS OF MOVING ACROSS THE DEEP SOUTH FROM NORTH
TO SOUTH.  THE ZERO VORTICITY LINE APPEARS TO REACH THE MEXICO
BORDER AROUND 06Z FRIDAY MORNING...KEEPING A CHANCE FOR ISOLATED
SHOWERS IN THE FORECAST TIL THEN. THIS SHORTWAVE APPEARS TO BE THE
LAST COHERENT FEATURE TO AFFECT THE AREA THROUGH THE WEEKEND...
ALTHOUGH AN ASSORTMENT OF SMALL VORT MAXES STILL PASS THROUGH THE
REGION ON THE NORTHWEST FLOW DURING THAT TIME.

UNFORTUNATELY FOR LOCAL RAINFALL ENTHUSIASTS...RH VALUES OF GREATER
THAN 70 PERCENT FROM SFC-600MB WILL ONLY BE AVAILABLE THROUGH 06Z
ACCORDING TO AN AVN X-SECTION FOR BRO.  RELATIVE HUMIDITY VALUES AT
+700 MB DECREASE BELOW 50 PERCENT AS OF 18Z FRIDAY...SLAMMING THE
DOOR SHUT ON ANY CHANCES FOR MORE RAIN.  THEN A RETURN TO SOUTH OR
SOUTHEAST FLOW OCCURS BY SUNDAY MORNING AND TEMPERATURES CLIMB ABOVE
NORMAL ONCE AGAIN FOR THE EXTENDED PERIOD.

MARINE...AT 2 P.M. BUOY 020 REPORTED EAST WINDS AT 12 KNOTS WITH
GUSTS TO 14 KNOTS AND SEAS AT 3 FEET 5 SECONDS.  LIGHT TO MODERATE
EAST WINDS WILL CONTINUE ACROSS THE LOWER TEXAS COASTAL WATERS.
ISOLATED SHOWERS MAY OCCUR DUE TO THE ABUNDANT MOISTURE ACROSS THE
AREA. HIGH PRESSURE WILL BUILD IN FROM THE GULF TONIGHT RESULTING IN
THE CONTINUATION OF EASTERLY WINDS THROUGH FRIDAY. A LOW PRESSURE
SYSTEM WILL DEVELOP OVER THE GREAT PLAINS LATE IN THE WEEKEND
PRODUCING MODERATE SOUTH TO SOUTHEASTERLY WINDS ACROSS THE MARINE
AREAS.

AVIATION...VFR CONDITIONS WITH LIGHT EASTERLY WINDS ARE REPORTED
ACROSS THE CWA THIS AFTERNOON. VFR CONDITIONS WILL PREVAIL THROUGH
THIS EVENING.  MVFR CONDITIONS ARE EXPECTED OVERNIGHT DUE TO A
LOWERING OF CEILING HEIGHTS WITH LIGHT VARIABLE WINDS.  LIGHT PATCHY
FOG OR HAZE MAY OCCUR NEAR SUNRISE.

PRELIMINARY NUMBERS FOR COORDINATION PURPOSES ONLY...
BRO EB 072/091 070/090 071/091 10/00/00/00/00/00
HRL EB 072/089 072/089 071/091 10/00/00/00/00/00
MFE EB 071/092 070/091 071/093 10/00/00/00/00/00
RGC EB 072/091 072/091 072/094 10/00/00/00/00/00
SPI EB 074/086 075/087 075/087 10/00/00/00/00/00

.BRO...NONE.

SYNOPTIC...53/69
MARINE-AVIATION...63
MESO...VEGA

THIS PRODUCT IS ALSO AVAILABLE ON OUR INTERNET WEB PAGE AT:
HTTP://WWW.SRH.NOAA.GOV/BRO
Hazardous weather outlook, May 22, 6:00 AM CDT, 12 hours 40 minutes before
TXZ248>257-231000-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BROWNSVILLE TX
600 AM CDT THU MAY 22 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR DEEP SOUTH TEXAS.

.TODAY AND TONIGHT.

A MINOR DISTURBANCE MOVING THROUGH DEEP SOUTH TEXAS TODAY COULD
CAUSE SOME SCATTERED SHOWERS OR THUNDERSTORMS.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH THURSDAY.

NO HAZARDOUS WEATHER IS EXPECTED.

.SPOTTER INFORMATION STATEMENT.

SPOTTER ACTIVATION IS NOT EXPECTED TODAY AND TONIGHT.

65

Nearby

Severe Thunderstorm Warnings in Texas, 2003Every severe thunderstorm warning in 2003

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.