Alert archive / Texas / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 147, NWS San Angelo, TX

June 4, 2004McCulloch County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at Jun 4, 2004, 6:20 PM CDT for McCulloch County, Texas. It was in force for 55 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 4, 2004, 6:20 PM CDT (23:20 UTC)
Expired: Jun 4, 2004, 7:15 PM CDT
In force: 55 min
Issued by: NWS San Angelo, TX
Area: Counties, with a storm outline in the text

County McCulloch County, TX

The radar

The San Angelo radar (KSJT), 110 km from the middle of the area, began a volume at 23:24 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

Fort Worth, TX (KFWD), launched 12:00Z, 11.3 hours before the alert went out and 266 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: 34 J/kg
Mixed-layer CIN: -356 J/kg
Mixed-layer LCL: 1089 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 35 m²/s²
0-3 km storm-relative helicity: 27 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 San Angelo, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 4, 2:09 PM CDT, 4 hours 11 minutes earlier.

Area forecast discussion, Jun 4, 2:09 PM CDT, 4 hours 11 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN ANGELO TX
209 PM CDT FRI JUN 4 2004

.DISCUSSION...
WEST CENTRAL TEXAS WEATHER TO REMAIN CLOSE TO NORMAL WITH RESPECT TO
DAYTIME MAX TEMPS AND RAIN CHANCES. ONLY DEVIATION FROM CLIMATOLOGY
WILL BE CONTINUED HIGHER THAN NORMAL WINDS WITH SLIGHTLY ABOVE NORMAL
NIGHTTIME LOW TEMPS. CANNOT RULE OUT ISOLATED THUNDERSTORMS OCCURRING
DURING ANY OF THE NEXT FOURTEEN FORECAST PERIODS. PRIMARY FORECAST
CHALLENGE WILL BE HIGHLIGHTING THOSE PERIODS WHERE RAIN CHANCES WILL
BE WORTH A MENTION IN THE ZONE AND POINT FORECASTS.

12Z 500MB PLOT SHOWED A BROAD HEIGHT RIDGE ACROSS THE U.S./MEXICAN
BORDER...FROM BAJA TO THE GULF COAST. NORTHWEST UPPER LEVEL FLOW
PREVAILED ALONG THE RIDGE/S NORTHERN PERIPHERY...FROM THE TX
PANHANDLE INTO EAST TX. 12Z MAF SOUNDING SHOWED UNUSUALLY DEEP
MOISTURE...WITH DEWPOINTS OF 10-15C UP THROUGH 775MB. OVER WEST
CENTRAL TX...INCREASED BOUNDARY LAYER MIXING HAS NOT RESULTED IN
DRYING...SURFACE DEWPOINTS HAVE REMAINED IN THE MID TO UPPER 60S...
ACCOMPANIED BY TEMPS IN THE MID TO UPPER 80S. CAPES PRESENTLY
ESTIMATED TO BE IN EXCESS OF 2500 J/KG OVER THE WESTERN BIG
COUNTRY...PER SPC MESO-ANALYSIS. ALREADY SEEING CAP ERODE WITH
ISOLATED DEEP CONVECTION DEVELOPING OVER THROCKMORTON COUNTY. CAP
EROSION WAS LIKELY ENHANCED BY A VERY WEAK SHORTWAVE EVIDENT IN WATER
VAPOR IMAGERY AND THE 400 MB WIND PROFILER PLOT. PREVIOUS FORECAST
HAD THIS EVENING/S THUNDERSTORMS CHANCES HANDLED WELL AND WILL PLAN
ONLY MINOR CHANGES IN THE NEW FORECAST ISSUANCE.

BEST CHANCE FOR RAIN LIKELY TO REMAIN OVER THE BIG COUNTRY THROUGH
THE WEEKEND...GIVEN CLOSER PROXIMITY TO STRONGER UPPER LEVEL
NORTHWEST FLOW AND POSSIBLE MCS TRACKS. GFS/ETA PROG A RATHER STRONG
SHORTWAVE TO DROP INTO OK AND NORTHWEST TX SATURDAY NIGHT. THIS COULD
EASILY RESULT IN AN MCS STRAYING INTO AREAS NORTH OF INTERSTATE 20...
AND WILL RAISE POPS NORTH OF ABILENE FOR THE SATURDAY NIGHT PERIOD.

UPPER LEVEL RIDGE BUILDS INTO WEST CENTRAL TX EARLY NEXT WEEK
AHEAD OF A LONGWAVE TROF DROPPING INTO THE GREAT BASIN. MIDLEVEL
TEMPS WILL INCREASE OVER WEST CENTRAL TX...WITH SOME WEAKNESS IN THE
CAP EXPECTED MAINLY EAST OF AN ABILENE TO SAN ANGELO LINE.
PERSISTENT LEE TROF AND LOW LEVEL SOUTHERLY JET WILL KEEP LOW LEVEL
HUMIDITY NEAR OR SLIGHTLY ABOVE NORMAL VALUES FOR EARLY JUNE...AS
WELL AS KEEP NIGHTTIME MIN TEMPS UP SLIGHTLY.

&&

.PRELIMINARY POINT TEMPS/POPS...
ABILENE     72  96  71  94 /  20  20  20  20
SAN ANGELO  73  98  73  96 /  10  10  10  10
JUNCTION    71  94  70  94 /  20  20  10  10

&&

.SJT WATCHES/WARNINGS/ADVISORIES...
NONE.

&&

14

Hazardous weather outlook, Jun 4, 2:30 PM CDT, 3 hours 50 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN ANGELO TX
230 PM CDT FRI JUN 4 2004

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-140-
154-155-168>170-051930-
BROWN TX-CALLAHAN TX-COKE TX-COLEMAN TX-CONCHO TX-CROCKETT TX-
FISHER TX-HASKELL TX-IRION TX-JONES TX-KIMBLE TX-MASON TX-
MCCULLOCH TX-MENARD TX-NOLAN TX-RUNNELS TX-SAN SABA TX-SCHLEICHER TX-
SHACKELFORD TX-STERLING TX-SUTTON TX-TAYLOR TX-THROCKMORTON TX-
TOM GREEN TX-
230 PM CDT FRI JUN 4 2004

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WEST CENTRAL TEXAS.

.DAY ONE...
THERE IS A CHANCE FOR THUNDERSTORMS ACROSS WEST CENTRAL TEXAS THROUGH
TONIGHT. LIGHTNING AND GUSTY WINDS WILL BE THE MAIN HAZARDS. A FEW OF
THE STORMS COULD PRODUCE WIND GUSTS TO 60 MPH AND SMALL HAIL.

.DAYS TWO THROUGH SEVEN...
THUNDERSTORMS WILL ALSO BE POSSIBLE SATURDAY THROUGH SUNDAY. A FEW OF
THE STORMS COULD PRODUCE SEVERE WEATHER.

.SPOTTER INFORMATION STATEMENT...
LIMITED SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND EVENING.

In the hours before

Local storm report, Jun 4, 4:25 PM CDT, 1 hour 55 minutes before

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Local storm report, Jun 4, 5:23 PM CDT, 57 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
523 PM CDT FRI JUN 04 2004

..TIME...   ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE...   ....MAG....     ..COUNTY LOCATION...ST.. ...SOURCE....
            ..REMARKS..

0516 PM     HAIL             5 E ALBANY              32.73N 99.21W
06/04/2004  2.75 INCH        SHACKELFORD        TX   LAW ENFORCEMENT

0522 PM     HAIL             ALBANY                  32.73N 99.30W
06/04/2004  1.75 INCH        SHACKELFORD        TX   LAW ENFORCEMENT

&&

BRAZZELL

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 4, 3:26 PM CDT	Severe Thunderstorm Warning	SJT	Throckmorton	49 min
Jun 4, 4:06 PM CDT	Severe Thunderstorm Warning	SJT	Throckmorton	54 min
Jun 4, 5:01 PM CDT	Severe Thunderstorm Warning	SJT	Shackelford	59 min
Jun 4, 5:59 PM CDT	Severe Thunderstorm Warning	SJT	Shackelford	46 min

Nearby

Severe Thunderstorm Warnings in Texas, 2004 Every severe thunderstorm warning in 2004

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.