Alert archive / Texas / Tornado Warnings in 2003

Tornado Warning 22, NWS San Angelo, TX

May 1, 2003Mason County, Texas

NWS San Angelo, TX issued this tornado warning at May 1, 2003, 5:31 PM CDT for Mason County, Texas. It was in force for 59 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 1, 2003, 5:31 PM CDT (22:31 UTC)
Expired: May 1, 2003, 6:30 PM CDT
In force: 59 min
Issued by: NWS San Angelo, TX
Area: Counties, with a storm outline in the text

County Mason County, TX

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this tornado 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

Del Rio, TX (KDRT), launched 12:00Z, 10.5 hours before the alert went out and 231 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: 2405 J/kg
Mixed-layer CIN: -143 J/kg
Mixed-layer LCL: 606 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 208 m²/s²
0-3 km storm-relative helicity: 299 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 7.2

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KSJT 012231
TORSJT
TXC319-012330-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SAN ANGELO TX
531 PM CDT THU MAY 1 2003

THE NATIONAL WEATHER SERVICE IN SAN ANGELO HAS ISSUED A

* TORNADO WARNING FOR...
  MASON COUNTY IN SOUTH CENTRAL TEXAS

* UNTIL 630 PM CDT

* AT 527 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  THUNDERSTORM WITH STRONG ROTATION CAPABLE OF PRODUCING A TORNADO AT
  ANY TIME 5 MILES SOUTHEAST OF KATEMCY...OR ABOUT 8 MILES NORTH OF
  MASON...MOVING SOUTHEAST AT 15 MPH.

A TORNADO MAY FORM AT ANY TIME. TAKE COVER NOW ABANDON MOBILE HOMES
AND VEHICLES FOR MORE SUBSTANTIAL SHELTER.

LAT...LON 3094 9920 3087 9934 3065 9901 3083 9899

$$

17

What forecasters said that day

The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS San Angelo, TX wrote its last area forecast discussion before this tornado warning went out at May 1, 3:20 PM CDT, 2 hours 11 minutes earlier.

Area forecast discussion, May 1, 3:20 PM CDT, 2 hours 11 minutes before

WEST CENTRAL TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN ANGELO TX
320 PM CDT THU MAY 01 2003

CURRENT...
19Z ANALYSIS SHOWS THE DRYLINE STRETCHING FROM NEAR CROSS
PLAINS...TO SAN ANGELO AND OZONA. A FEW SHOWERS HAVE DEVELOPED ALONG
AND SOUTHEAST OF THIS LINE. DEWPOINTS RANGE FROM AROUND 30 NORTH AND
WEST...TO THE MID 60S SOUTHEAST. A WEAK UPPER RIDGE IS BEGINNING TO
BUILD IN FROM THE WEST.

TONIGHT AND FRIDAY...
TONIGHT THE DRYLINE WILL DRIFT SLIGHTLY FURTHER SOUTHEAST...HELPING
TO TRIGGER ISOLATED STORMS GIVEN THE ABUNDANT LOW/MID LEVEL
MOISTURE. ALSO WITH CAPES RUNNING UP TO 4000J/KG AND ENOUGH
SHEAR...EXPECT A FEW OF THESE STORMS WILL BECOME SEVERE.
WITH A COLD FRONT SLIDING DOWN FROM THE NORTH AND THE DRYLINE
HANGING ON ACROSS THE SOUTHEAST COUNTIES...WILL CONTINUE WITH A
SLIGHT CHANCE OF SHOWERS ON FRIDAY. ANOTHER ROUND OF SEVERE WEATHER
COULD AGAIN AFFECT THE FURTHEST SOUTHEAST COUNTIES.

SATURDAY AND SUNDAY...
THE NEXT UPPER TROUGH BEGINS TO PUSH INTO THE WESTERN STATES ON
SATURDAY. ALSO THE FRONTAL BOUNDARY LIFTS BACK NORTH OUT OF THE BIG
COUNTRY. THIS WILL HELP TO TRIGGER A FEW SHOWERS NORTH AND EAST BY
SATURDAY AFTERNOON/NIGHT. BY SUNDAY WITH THE UPPER TROUGH LIFTING
INTO THE PLAINS...THIS WILL PUSH A LEESIDE TROUGH/DRYLINE THROUGH
WEST CENTRAL TEXAS...HELPING TO TRIGGER OFF A FEW STORMS. HOWEVER
WITH LIMITED MOISTURE...THE BEST CHANCES OF SHOWERS WILL ONCE AGAIN
BE IN THE SOUTHEAST.

MONDAY THROUGH THURSDAY...
MONDAY A STRONGER COLD FRONT PUSHES THROUGH MUCH OF THE AREA.
HOWEVER WITH AS THE UPPER SYSTEM PULLS WELL OFF TO THE
NORTHEAST...THE TAIL END OF THE FRONT WILL STALL OUT ACROSS
SOUTHWEST TEXAS. HOW FAR SOUTH THE FRONT STALLS OUT WILL DETERMINE
WHEN THE BEST CHANCES OF SHOWERS WILL OCCUR THROUGH MIDWEEK. IF IT
STALLS OUT TOO FAR SOUTH AND WEST...EXPECT ONLY A SLIGHT CHANCE FOR
LIMITED TIME FRAME AS THE FRONT LIFTS NORTHEAST. HOWEVER IF IT
STALLS OUT ALONG THE SOUTHERN AND WESTERN ZONES...THERE COULD BE A
LINGERING CHANCE OF SHOWERS THROUGH THURSDAY. FOR NOW WILL GO WITH
THE MIDDLE OF THE ROAD AND KEEP POPS MENTIONED TUESDAY INTO
WEDNESDAY.

OTHERWISE...EXPECT ABOVE NORMAL TEMPERATURES THROUGH
SUNDAY...SOUTH OF THE FRONT AND BELOW NORMAL NORTH OF THE FRONT.
NEAR TO SLIGHTLY BELOW NORMAL TEMPS CAN BE EXPECTED MONDAY
THROUGH THURSDAY.

CCF PRELIMS..
ABI BE 060/089 062/092 066 24-11
    EBEEB 089/059 086/055 080/054 079/062 082 11100012211
SJT UE 061/096 063/096 067 240-0
    BBEEB 092/058 088/054 083/056 083/064 086 01100022221
JCT BE 065/094 065/093 070 24222
    EBEEB 090/061 087/059 085/057 082/065 085 22201022221

.SJT...TORNADO WATCH FOR SOUTHEAST COUNTIES.

24

Hazardous weather outlook, May 1, 3:45 AM CDT, 13 hours 46 minutes before

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-140-
154-155-168>170-020845-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN ANGELO TX
345 AM CDT THU MAY 1 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WEST CENTRAL TEXAS.

.DAY ONE...

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED.

04

The office that day

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

Issued	Product	Office	Counties	Lasted
May 1, 4:25 PM CDT	Severe Thunderstorm Warning	SJT	McCulloch	50 min
May 1, 4:39 PM CDT	Severe Thunderstorm Warning	SJT	Mason	66 min
May 1, 5:13 PM CDT	Severe Thunderstorm Warning	SJT	San Saba	62 min
May 1, 5:17 PM CDT	Severe Thunderstorm Warning	SJT	McCulloch	43 min
May 1, 6:00 PM CDT	Severe Thunderstorm Warning	SJT	McCulloch	30 min
May 1, 6:13 PM CDT	Severe Thunderstorm Warning	SJT	San Saba	62 min
May 1, 6:18 PM CDT	Severe Thunderstorm Warning	SJT	Brown	57 min
May 1, 6:24 PM CDT	Flash Flood Warning	SJT	Mason	3 hr
May 1, 6:27 PM CDT	Severe Thunderstorm Warning	SJT	Mason	63 min
May 1, 6:32 PM CDT	Tornado Warning	SJT	Mason	58 min
May 1, 6:38 PM CDT	Severe Thunderstorm Warning	SJT	Sutton	52 min

Nearby

Tornado Warnings in Texas, 2003 Every tornado warning in 2003 Tornadoes 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.