Alert archive / Texas / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 183, NWS San Angelo, TX

October 10, 2001Concho County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at Oct 10, 2001, 11:59 PM CDT for Concho County, Texas. It was in force for 61 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: Oct 10, 2001, 11:59 PM CDT (04:59 UTC)
Expired: Oct 11, 2001, 1:00 AM CDT
In force: 61 min
Issued by: NWS San Angelo, TX
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Concho County, TX

The radar

The San Angelo radar (KSJT), 60 km from the middle of the area, began a volume at 05:00 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

Midland Regional, TX (KMAF), launched 00:00Z, 5.0 hours before the alert went out and 232 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: 757 J/kg
Mixed-layer CIN: -144 J/kg
Mixed-layer LCL: 1372 m above ground
0-6 km bulk shear: 74 kt
0-1 km storm-relative helicity: 28 m²/s²
0-3 km storm-relative helicity: 110 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 Oct 10, 7:10 PM CDT, 4 hours 49 minutes earlier.

Area forecast discussion, Oct 10, 7:10 PM CDT, 4 hours 49 minutes before

WEST CENTRAL TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN ANGELO TX
710 PM CDT WED OCT 10 2001

...SEVERE THUNDERSTORM WATCH NUMBER 769 HAS EXPIRED...

AFTER COORDINATING WITH THE STORM PREDICTION CENTER...HAVE ALLOWED
SEVERE THUNDERSTORM WATCH NUMBER 769 TO EXPIRE AS OF 7 PM CDT THIS
EVENING. ELEVATED CONVECTION CONTINUES BEHIND THE FRONT.
HOWEVER...BASED ON LATEST WSR-88D AND SATELLITE DATA APPEARS
THUNDERSTORMS ARE PULSING. THUS FAR...WE HAVE NOT VERIFIED OUR
WARNING FOR RUNNELS COUNTY...WHICH EXPIRED AT 630 PM CDT. THE
WINTERS POLICE REPORTED HEAVY RAIN FROM THE THUNDERSTORM BUT NO
HAIL. WE EXPECT MOST THUNDERSTORMS WHICH MAY DEVELOP DURING THE NEXT
FEW HOURS TO REMAIN BELOW SEVERE LIMITS WITH ONLY A FEW POSSIBLY
PRODUCING HAIL SLIGHTLY EXCEEDING SEVERE LIMITS.

WE BELIEVE THE POTENTIAL FOR WIDESPREAD SEVERE WEATHER HAS
DIMINISHED TO THE POINT WHERE CONTINUING THE SEVERE WEATHER WATCH IS
UNNECESSARY. HOWEVER...WE WILL CONTINUE TO MONITOR THIS SITUATION
CLOSELY...AND IF NECESSARY...WE WILL COORDINATE WITH THE STORM
PREDICTION CENTER AGAIN FOR THE POSSIBILITY OF ANOTHER WATCH.

WILL UPDATE CURRENT PACKAGE TO REMOVE WATCH WORDING AND REDUCE POPS
AS APPROPRIATE.

THANKS TO SPC FOR THE GREAT SUPPORT...AS USUAL...AND FOR THE
COORDINATION.

.SJT...NONE.

23/HUBER

****  310 PM CDT WED OCT 10 2001 DISCUSSION FOLLOWS   ****

AFTER A BUSY MORNING...STORMS HAVE REDEVELOPED AGAIN THIS AFTERNOON.
THUS...WILL KEEP THIS SHORT.

COLD FRONT MOVING THROUGH WEST CENTRAL TEXAS...WITH SHOWERS AND
STORMS WIDESPREAD ALONG AND NORTH OF THE FRONT. LAST LOOK AT RADAR
SHOWED THE FRONT PROGRESSING FROM ABOUT ABILENE TO MIDLAND AT 1945Z.
VERY UNSTABLE AIR MASS SOUTH OF THE FRONT SO CONVECTION SHOULD
GRADUALLY BUILD SOUTH WITH THE FRONT. SHORTWAVE EVIDENT ON WATER
VAPOR IMAGERY ACROSS THE SOUTHWEST US WILL ALSO PULL ACROSS...
ENHANCING LIFT EVEN MORE. WILL CONTINUE WITH LIKELY POPS.
GIVEN HIGH PRECIPITABLE WATER VALUES AND SOME TRAINING OF CELLS
...WENT AHEAD AND MENTIONED LOCALLY HEAVY RAINFALL AS WELL.

SHORTWAVE PULLS ACROSS EARLY THURSDAY SO A FEW SHOWERS OR STORMS MAY
LINGER INTO THE MORNING HOURS. DRY AND SLIGHTLY COOLER CONDITIONS
THROUGH EARLY FRIDAY...BEFORE ANOTHER POTENT SHORTWAVE AND COLD
FRONT DIVES INTO THE SOUTHERN PLAINS BY LATE FRIDAY. WILL CONTINUE
CHANCE POPS.

PRELIM CCF...
ABI 054/073/058/075 7200
SJT 056/074/058/076 6200
JCT 060/076/057/077 6300

.SJT...NONE.

07

In the hours before

Local storm report, Oct 10, 8:02 PM CDT, 3 hours 57 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO, TX
802 PM CDT WED OCT 10 2001

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

0515 PM    MORAN                     TX   .75 INCH HAIL
10/10/01   SHACKELFORD                    DIME SIZE HAIL

04

Local storm report, Oct 10, 8:56 PM CDT, 3 hours 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO, TX
856 PM CDT WED OCT 10 2001

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

0815 PM    POTOSI                    TX   1.00 INCH HAIL
10/10/01   TAYLOR

0821 PM    ABILENE                   TX   .75 INCH HAIL
10/10/01   TAYLOR                         REPORTED ON ABILENE
                                          REGIONAL AIRPORT RUNWAY BY
                                          PILOT

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 10, 8:16 PM CDT	Severe Thunderstorm Warning	SJT	Callahan, Taylor	29 min
Oct 10, 9:55 PM CDT	Severe Thunderstorm Warning	SJT	Irion	65 min
Oct 10, 10:02 PM CDT	Severe Thunderstorm Warning	SJT	Sterling	43 min
Oct 10, 10:58 PM CDT	Severe Thunderstorm Warning	SJT	Tom Green	62 min
Oct 10, 11:44 PM CDT	Severe Thunderstorm Warning	SJT	Jones	61 min
Oct 11, 12:19 AM CDT	Severe Thunderstorm Warning	SJT	Haskell	56 min
Oct 11, 12:27 AM CDT	Severe Thunderstorm Warning	SJT	Shackelford	63 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.