Alert archive / Texas / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 79, NWS Brownsville, TX

November 16, 2001Cameron County, Texas

NWS Brownsville, TX issued this severe thunderstorm warning at Nov 16, 2001, 3:58 PM CST for Cameron County, Texas. It was in force for 62 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: Nov 16, 2001, 3:58 PM CST (21:58 UTC)
Expired: Nov 16, 2001, 5:00 PM CST
In force: 62 min
Issued by: NWS Brownsville, TX
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Cameron County, TX

The radar

The Brownsville radar (KBRO), 29 km from the middle of the area, began a volume at 22:01 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, 10.0 hours before the alert went out and 31 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: 1911 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 681 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 52 m²/s²
0-3 km storm-relative helicity: 121 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 5.2

Open this sounding in Storm Lab

The text

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

848 
WUUS54 KBRO 162158
SVRBRO
TXC061-162300-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
358 PM CST FRI NOV 16 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CAMERON COUNTY IN DEEP SOUTH TEXAS

* UNTIL 500 PM CST

* AT 351 PM CST...DOPPLER RADAR INDICATED SEVERE THUNDERSTORMS ALONG 
  A LINE EXTENDING FROM 11 MILES NORTHWEST OF LAGUNA VISTA TO        
  BROWNSVILLE...MOVING EAST AT 20 MPH. THIS SEVERE THUNDERSTORM 
  WILL LIKELY PRODUCE DIME SIZE HAIL... AND WINDS IN EXCESS OF 60
  MPH.

* THE TOWNS AND CITIES IN THE PATH OF THE STORM ARE...
   BAYVIEW...LAGUNA VISTA...LAGUNA HEIGHTS...PORT ISABEL...SOUTH
   PADRE ISLAND.

SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE ADVANCE
WARNING. PREPARE TO MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE
SUCH AS A BASEMENT OR SMALL INTERIOR ROOM IF A TORNADO IS SPOTTED.

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE OFFICE.

LAT...LON 2628 9761 2599 9759 2606 9718 2627 9734

CASTILLO

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 Nov 16, 3:30 PM CST, 28 minutes earlier.

Area forecast discussion, Nov 16, 3:30 PM CST, 28 minutes before

DEEP SOUTH TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BROWNSVILLE TX
330 PM CST FRI NOV 16 2001

.DISCUSSION...LINE ECHO WAVE PATTERN FORMED OVER CWA AND SHOULD MOVE
THROUGH THE BROWNSVILLE AREA THIS AFTERNOON. SHOULD SEE CLOUDY SKIES
AND LT/MDT RAIN IN ITS WAKE THROUGH TONIGHT.

A POTENT 5H UPPER LOW OVER SE NM CONTINUES TO ADVECT MID LEVEL
MOISTURE ACROSS NORTHERN MEXICO INTO TEXAS.  THIS UPPER LOW WILL
BEGIN TO OPEN AND DRIFT NE ON SATURDAY IN RESPONSE TO AN UPPER LEVEL
TROUGH WHICH MOVES ONTO THE PAC NW AND DEEPENS. SFC RIDGE MOVES EAST
HELPING PUMP MOISTURE INTO SOUTHER PLAINS. ON SUNDAY...UPPER SHORT
WAVE MOVES EAST INTO THE MID MISSISSIPPI VALLEY AND SFC RIDGE NOSES
INTO SOUTHEAST TEXAS RESULTING IN SOME DRYING OF THE ATMOSPHERE OVER
DEEP SOUTH TEXAS. THE H5 SHORT WAVE OVER THE PAC NW MOVES SOUTHEAST
ACROSS THE CENTRAL ROCKIES AND FORMS A CLOSED LOW OVER NW COLORADO.
A SECOND MORE VIGOROUS UPPER LEVEL SHORT WAVE HEADS FOR THE GREAT
LAKES OUT OF CANADA WITH A SURFACE TROUGH AHEAD OF IT. THIS SURFACE
TROUGH MOVES INTO N TEXAS ON MONDAY...SERVING TO FOCUS LOW LEVEL
MOISTURE OVER TEXAS NORTH OF CWA. ON TUESDAY...THE UPPER LEVEL
TROUGH OVER THE EASTERN U.S. DEEPENS...H5 RIDGE BUILDS OVER THE
ROCKIES...HELPING TO BRING A SURFACE HIGH FROM THE NORTHERN PLAINS
DOWN TOWARD THE MID MISSISSIPPI VALLEY AND THE SOUTHERN PLAINS. A
SURFACE LOW OVER NEW MEXICO PULLS MOISTURE NORTH ACROSS TEXAS WITH
AN ASSOCIATED H5 TROUGH FROM THE SOUTHERN PLAINS SOUTH INTO NORTHERN
MEXICO.

BY THURSDAY OF NEXT WEEK...THE UPPER LEVEL SHORT WAVE OVER TEXAS
MOVES EAST OVER THE LOWER MISSISSIPPI VALLEY LEAVING A DRIER WEST TO
NORTHWEST UPPER LEVEL FLOW OVER DEEP SOUTH TEXAS.

.MARINE...WINDS HAVE INCREASED TO AROUND 20 KNOTS WITH SEAS UP TO 7
FEET...SO SCA WILL GO UP FOR OFFSHORE WATERS.

PRELIMINARY NUMBERS...
BRO EE 070/083 067/083 065 40/30/30/20/20
HRL EE 069/083 066/083 064 40/30/30/20/20
MFE EE 070/084 067/083 065 20/30/30/20/20
RGC EE 067/086 064/085 064 00/30/30/20/20
SPI EE 073/082 073/081 070 40/30/30/20/20

SYNOPTIC...59
COORDINATION...52
PUBLIC-AVIATION-MARINE...54 & 61

.BRO...SCA GMZ150-155-170-175.

In the hours before

Local storm report, Nov 16, 10:00 AM CST, 5 hours 58 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
1000 AM CST FRI NOV 16 2001

TIME(CST)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0959 AM    10 N SAN YGNACIO          TX   FLOOD
11/16/01   ZAPATA                         REPORTED BY STORM
                                          SPOTTER  WATER OVER
                                          U.S. 83.

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 16, 7:50 AM CST	Flash Flood Warning	BRO	Jim Hogg, Zapata	3 hr
Nov 16, 9:30 AM CST	Flash Flood Warning	BRO	Brooks	90 min
Nov 16, 10:27 AM CST	Special Marine Warning	BRO		63 min
Nov 16, 10:27 AM CST	Special Marine Warning	BRO		63 min
Nov 16, 10:51 AM CST	Flash Flood Warning	BRO	Hidalgo, Jim Hogg, Starr, Zapata	99 min
Nov 16, 10:57 AM CST	Severe Thunderstorm Warning	BRO	Starr	63 min
Nov 16, 12:06 PM CST	Severe Thunderstorm Warning	BRO	Hidalgo	54 min
Nov 16, 12:30 PM CST	Flash Flood Warning	BRO	Hidalgo, Starr	3 hr
Nov 16, 12:51 PM CST	Tornado Warning	BRO	Hidalgo	24 min
Nov 16, 1:12 PM CST	Severe Thunderstorm Warning	BRO	Hidalgo	63 min
Nov 16, 2:47 PM CST	Flash Flood Warning	BRO	Cameron, Hidalgo, Kenedy, Willacy	118 min
Nov 16, 3:01 PM CST	Severe Thunderstorm Warning	BRO	Cameron	59 min
Nov 16, 4:20 PM CST	Special Marine Warning	BRO		55 min
Nov 16, 4:20 PM CST	Special Marine Warning	BRO		55 min
Nov 16, 4:45 PM CST	Flash Flood Warning	BRO	Cameron, Willacy	60 min
Nov 16, 5:07 PM CST	Special Marine Warning	BRO		68 min
Nov 16, 5:07 PM CST	Special Marine Warning	BRO		68 min
Nov 16, 5:07 PM CST	Severe Thunderstorm Warning	BRO	Cameron	53 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.