Alert archive / Texas / Severe Thunderstorm Warnings in 2003
Severe Thunderstorm Warning 4, NWS Brownsville, TX
NWS Brownsville, TX issued this severe thunderstorm warning at Mar 15, 2003, 11:55 AM CST for Cameron County, Willacy County, Texas. It was in force for 65 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
- Mar 15, 2003, 11:55 AM CST (17:55 UTC)
- Expired
- Mar 15, 2003, 1:00 PM CST
- In force
- 65 min
- Issued by
- NWS Brownsville, TX
- Area
- Counties, with a storm outline in the text
Counties Cameron County, TX, Willacy County, TX
The radar
The Brownsville radar (KBRO), 46 km from the middle of the area, began a volume at 17:58 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.
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
Brownsville Intl, TX (KBRO), launched 12:00Z, 5.9 hours before the alert went out and 48 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.
- Mixed-layer CAPE
- 1262 J/kg
- Mixed-layer CIN
- -31 J/kg
- Mixed-layer LCL
- 583 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 24 m²/s²
- 0-3 km storm-relative helicity
- 127 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.6
The text
As transmitted, in the capitals the NWS used until 2016.
122 WUUS54 KBRO 151755 SVRBRO TXC061-489-151900- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BROWNSVILLE TX 1155 AM CST SAT MAR 15 2003 THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHERN CAMERON COUNTY IN DEEP SOUTH TEXAS EASTERN WILLACY COUNTY IN DEEP SOUTH TEXAS * UNTIL 100 PM CST * AT 1153 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM NEAR RIO HONDO...OR 10 MILES NORTHEAST OF HARLINGEN...AND MOVING NORTHWEST AT 5 MPH. * THE SEVERE THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF... CAMERON AND WILLACY COUNTIES. IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. LAT...LON 2615 9756 2627 9742 2654 9764 2635 9785 $$ SPEECE
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 Mar 15, 9:50 AM CST, 2 hours 5 minutes earlier.
Area forecast discussion, Mar 15, 9:50 AM CST, 2 hours 5 minutes before
DEEP SOUTH TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE BROWNSVILLE TX 950 AM CST SAT MAR 15 2003 AVIATION/SHORT TERM...CURRENT VSBYS AT THE 3 VALLEY AIRPORTS ARE >6SM ATTM WITH CIGS HOLDING STEADY BELOW 1 KFT. CURRENT KBRO REFLECTIVITY SHOWS SCATTERED CONV FIRING TO THE SOUTH OF THE BORDER OVER NE MEXICO MOVING NE AT 15 TO 20 MPH. THE 12Z BRO SOUNDING SHOWS A DECENT LI AROUND -6 IN PLACE OVER THE CWA WITH A RESPECTIBLE PWAT AROUND 1.50 INCHES. SHORT RANGE GUIDANCE MAINTAINS SEVERAL 5H VORTICES ADVECTING OVER THE AREA AS A STRONG 5H TROUGH MOVES EAST OUT OF NORTHERN MEXICO. THIS UPPER LEVEL TROUGHING WILL PROVIDE PLENTY OF UVV ACROSS THE ENTIRE BRO CWA TODAY MAINTAINING THE CONV THREAT. WILL ADJUST THE CURRENT WORDING OF THE FIRST PERIOD OF THE ZFP TO REFLECT BETTER INITIAL CONV CHCS NEAR THE BORDER...BUT OVERALL FORECAST TREND LOOKS GOOD. LOW OVC AND RAIN COOLED OUTFLOWS FROM THE CONV TO OUR SOUTH AND WEST WILL KEEP HIGH TEMPS SUPPRESSED THIS AFTERNOON. CURRENT TEMP WORDING IN THE FIRST PERIOD LOOKS ON TRACK WITH NO ADJUSTMENTS NEEDED HERE. MARINE...THE E-NE SURFACE FLOW WILL GRADUALLY TRANSITION TO A MORE SE FLOW PATTERN LATER THIS AFTERNOON AS THE SURFACE TROFFING INCREASES OVER NORTHERN MEX AND WEST TX. CONV NOW REMAINS CLUSTERED AROUND BUOY020 MOVING NE AT 10 TO 15 MPH. WILL LIKELY REISSUE THE MWSBRO HIGHLIGHTING THE CONV POTENTIAL ALONG THE BAY AND GULF WATERS FOR THE REST OF TODAY. CURRENT CWF WORDING LOOKS OK WITH NO CHANGES REQUIRED ATTM. SYNOPTIC-AVIATION-MARINE...60/MESO...MARTINEZ .BRO...NONE. THIS PRODUCT IS ALSO AVAILABLE ON OUR INTERNET WEB PAGE AT: HTTP://WWW.SRH.NOAA.GOV/BRO
Hazardous weather outlook, Mar 15, 6:00 AM CST, 5 hours 55 minutes before
GMZ130-150-155-170-175-TXZ248>257-161200- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BROWNSVILLE TX 600 AM CST SAT MAR 15 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR DEEP SOUTH TEXAS. .DAY ONE...TODAY AND TONIGHT. AREAS OF FOG WILL SHROUD THE COASTAL SECTIONS OF DEEP SOUTH TEXAS. FOG WILL CONTINUE THROUGH EARLY AFTERNOON. AREAS OF SEA FOG OVER THE COASTAL WATERS WILL REDUCE VISIBILITIES TO ONE TO THREE NAUTICAL MILES TODAY. FOG IS EXPECTED TO REDEVELOP ALONG THE COASTAL AREAS LATER TONIGHT. SCATTERED SHOWERS WITH EMBEDDED THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON. RAINFALL AMOUNTS WITH THE SHOWERS AND THUNDERSTORMS WILL AVERAGE AROUND 1/2 INCH...WITH LOCALLY HIGHER AMOUNTS OF MORE THAN 3 INCHES POSSIBLE. ALSO...DANGEROUS LIGHTNING...GUSTY WINDS AND POSSIBLY SMALL HAIL CAN BE EXPECTED WITH THE STRONGER STORMS. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. NO HAZARDOUS WEATHER IS EXPECTED. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED. BENNETT
The office that day
Everything else NWS Brownsville, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 15, 11:21 AM CST | Severe Thunderstorm Warning | BRO | Cameron, Hidalgo | 54 min |
| Mar 15, 12:00 PM CST | Flash Flood Warning | BRO | Cameron, Hidalgo, Willacy | 2 hr |
| Mar 15, 12:21 PM CST | Severe Thunderstorm Warning | BRO | Cameron, Hidalgo, Kenedy, Willacy | 54 min |
| Mar 15, 1:09 PM CST | Severe Thunderstorm Warning | BRO | Cameron, Willacy | 51 min |
| Mar 15, 1:22 PM CST | Special Marine Warning | BRO | 113 min | |
| Mar 15, 1:22 PM CST | Special Marine Warning | BRO | 113 min | |
| Mar 15, 3:23 PM CST | Special Marine Warning | BRO | 52 min |
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; radar from the NEXRAD Level II archive.