Alert archive / Texas / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 49, NWS Brownsville, TX

October 22, 2002Zapata County, Texas

NWS Brownsville, TX issued this severe thunderstorm warning at Oct 22, 2002, 10:12 PM CDT for Zapata County, Texas. It was in force for 45 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: Oct 22, 2002, 10:12 PM CDT (03:12 UTC)
Expired: Oct 24, 2002, 7:15 PM CDT
In force: 45 hr
Issued by: NWS Brownsville, TX
Area: Counties, with a storm outline in the text

County Zapata County, TX

The radar

The Brownsville radar (KBRO), 95 km from the middle of the area, began a volume at 03:03 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, 3.2 hours before the alert went out and 98 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2509 J/kg
Mixed-layer CIN: -11 J/kg
Mixed-layer LCL: 772 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 49 m²/s²
0-3 km storm-relative helicity: 48 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 6.7

Open this sounding in Storm Lab

The text

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

264 
WUUS54 KBRO 230312
SVRBRO
TXC505-230330-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
1011 PM CDT TUE OCT 22 2002

THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN ZAPATA COUNTY IN DEEP SOUTH TEXAS

* UNTIL 1030 PM CDT

* AT 1009 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 16 MILES NORTHEAST OF SAN YGNACIO...MOVING
  NORTH AT 25 MPH. THIS SEVERE THUNDERSTORM WILL LIKELY PRODUCE HAIL
  TO THE SIZE OF NICKELS... AND WINDS IN EXCESS OF 60 MPH.

* THE SEVERE THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF...  
  NORTHERN ZAPATA COUNTY.

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A STRONG
BUILDING. DAMAGING WINDS...LARGE HAIL...FREQUENT CLOUD TO GROUND
LIGHTNING...AND VERY HEAVY RAIN ARE ALL POSSIBLE IN SEVERE
THUNDERSTORMS. STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS
PASSED.

LAT...LON 2704 9943 2700 9897 2727 9898 2726 9944

$$

SPEECE

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 22, 7:07 PM CDT	Flash Flood Warning	BRO	Hidalgo	113 min
Oct 22, 7:25 PM CDT	Severe Thunderstorm Warning	BRO	Kenedy	2 hr
Oct 22, 7:30 PM CDT	Special Marine Warning	BRO		2 hr
Oct 22, 7:30 PM CDT	Special Marine Warning	BRO		2 hr
Oct 22, 8:17 PM CDT	Flash Flood Warning	BRO	Brooks, Kenedy	118 min
Oct 22, 8:38 PM CDT	Severe Thunderstorm Warning	BRO	Brooks	112 min
Oct 22, 10:07 PM CDT	Flash Flood Warning	BRO	Brooks	113 min
Oct 23, 4:12 AM CDT	Special Marine Warning	BRO		3 hr
Oct 23, 4:12 AM CDT	Special Marine Warning	BRO		3 hr

Nearby

Severe Thunderstorm Warnings in Texas, 2002 Every severe thunderstorm warning in 2002

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.