Alert archive / Texas / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 2, NWS Brownsville, TX

April 23, 2001Brooks County, Kenedy County, Texas

NWS Brownsville, TX issued this severe thunderstorm warning at Apr 23, 2001, 9:47 PM CDT for Brooks County, Kenedy County, Texas. It was in force for 58 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Apr 23, 2001, 9:47 PM CDT (02:47 UTC)
Expired: Apr 23, 2001, 10:45 PM CDT
In force: 58 min
Issued by: NWS Brownsville, TX
Area: Whole counties

Counties Brooks County, TX, Kenedy County, TX

The radar

The Corpus Christi radar (KCRP), 98 km from the middle of the area, began a volume at 02:47 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.

What was reported inside it

Time	Report	Where	Remark
Apr 23, 10:30 PM CDT	Thunderstorm Wind 60 E	Rachal, TX	Thunderstorm winds knocked down power lines.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 2.8 hours before the alert went out and 102 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: 1834 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 724 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 4 m²/s²
0-3 km storm-relative helicity: -24 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KBRO 240249
SVRBRO
TXC047-261-240345-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
947 PM CDT MON APR 23 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN BROOKS COUNTY IN SOUTH CENTRAL TEXAS
  NORTHWESTERN KENEDY COUNTY IN SOUTH CENTRAL TEXAS

* UNTIL 1045 PM CDT

* AT 947 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SEVERE THUNDERSTORMS ALONG A LINE EXTENDING FROM 10 MILES NORTH OF
  PREMONT TO 10 MILES WEST OF PREMONT TO 16 MILES WEST OF
  FALFURRIAS...MOVING SOUTHEAST AT 20 MPH. THIS SEVERE THUNDERSTORM  
  WILL LIKELY PRODUCE DIME SIZE HAIL... AND WINDS UP TO 60 MPH.

* THE SEVERE THUNDERSTORMS WILL BE NEAR...
   FALFURRIAS BY 1020 PM CDT.

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 2762 9817 2740 9839 2720 9851 2693 9805
          2715 9785 2741 9771

SPEECE/WATKINS

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 23, 10:08 PM CDT	Severe Thunderstorm Warning	BRO	Brooks	52 min
Apr 23, 10:39 PM CDT	Severe Thunderstorm Warning	BRO	Hidalgo, Starr	66 min
Apr 23, 11:05 PM CDT	Flash Flood Warning	BRO	Brooks	3 hr
Apr 23, 11:35 PM CDT	Severe Thunderstorm Warning	BRO	Cameron, Hidalgo, Kenedy, Willacy	55 min
Apr 24, 12:33 AM CDT	Severe Thunderstorm Warning	BRO	Cameron, Hidalgo, Kenedy, Willacy	57 min
Apr 24, 1:34 AM CDT	Severe Thunderstorm Warning	BRO	Kenedy, Willacy	56 min
Apr 24, 1:34 AM CDT	Severe Thunderstorm Warning	BRO	Cameron	56 min
Apr 24, 2:41 AM CDT	Severe Thunderstorm Warning	BRO	Cameron, Willacy	64 min

Nearby

Severe Thunderstorm Warnings in Texas, 2001 Every severe thunderstorm warning in 2001

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.