Alert archive / Texas / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 208, NWS Shreveport, LA

November 26, 2001San Augustine County, Texas

NWS Shreveport, LA issued this severe thunderstorm warning at Nov 26, 2001, 1:47 PM CST for San Augustine County, Texas. It was in force for 43 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: Nov 26, 2001, 1:47 PM CST (19:47 UTC)
Expired: Nov 26, 2001, 2:30 PM CST
In force: 43 min
Issued by: NWS Shreveport, LA
Area: Whole counties

County San Augustine County, TX

The radar

The Ft Polk radar (KPOE), 116 km from the middle of the area, began a volume at 19:49 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

Shreveport, LA (KSHV), launched 12:00Z, 7.8 hours before the alert went out and 127 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: 31 J/kg
Mixed-layer CIN: -250 J/kg
Mixed-layer LCL: 732 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 288 m²/s²
0-3 km storm-relative helicity: 297 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.2

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 Shreveport, LA wrote its last area forecast discussion before this severe thunderstorm warning went out at Nov 26, 10:34 AM CST, 3 hours 13 minutes earlier.

Area forecast discussion, Nov 26, 10:34 AM CST, 3 hours 13 minutes before

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In the hours before

Special weather statement, Nov 26, 10:49 AM CST, 2 hours 58 minutes before

ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-TXZ096-
097-108>112-124>126-136>138-149>153-165>167-261800-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SHREVEPORT LA
1049 AM CST MON NOV 26 2001

THERE IS A MODERATE RISK OF SEVERE THUNDERSTORMS IN AN AREA BOUNDED
BY EL DORADO ARKANSAS...TO MANSFIELD LOUISIANA...TO TYLER AND
CLARKSVILLE TEXAS...AND NORTH TO DE QUEEN ARKANSAS. THIS AREA
INCLUDES SHREVEPORT AND BOSSIER CITY...TEXARKANA...AND MAGNOLIA...
AND HOPE ARKANSAS. ACROSS THE REST OF THE FOUR STATE AREA...THERE IS
A SLIGHT RISK OF SEVERE THUNDERSTORMS. THE SEVERE THUNDERSTORMS ARE
EXPECTED TO OCCUR LATE THIS AFTERNOON AND TONIGHT.

A COLD FRONT IS EXPECTED TO MOVE INTO THE WEST PART OF THE FOUR
STATE AREA LATE THIS AFTERNOON...AND PROGRESS SLOWLY EASTWARD
TONIGHT...ACROSS THE FOUR STATE AREA. ALONG AND AHEAD OF THIS FRONT
THE AIR IS UNSTABLE...WITH FAVORABLE VERTICAL TURNING OF THE WINDS...
TO SUPPORT ISOLATED SUPERCELLS WITH TORNADOES. HAIL AND HIGH WINDS
COULD OCCUR LATE TONIGHT AS THE STORMS EVOLVE INTO A SQUALL LINE.

ACTIVATION OF SKYWARN NETWORKS...STORM SPOTTERS...AND EMERGENCY
MANAGEMENT OFFICIALS...MAY BE NEEDED LATE THIS AFTERNOON AND
TONIGHT.

The office that day

Everything else NWS Shreveport, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Nov 26, 2:26 PM CST	Severe Thunderstorm Warning	SHV	De Soto	49 min
Nov 26, 2:35 PM CST	Tornado Warning	SHV	De Soto	40 min
Nov 26, 2:51 PM CST	Severe Thunderstorm Warning	SHV	Sabine	39 min
Nov 26, 3:24 PM CST	Tornado Warning	SHV	Sabine	36 min
Nov 26, 4:23 PM CST	Tornado Warning	SHV	Union	67 min
Nov 26, 4:26 PM CST	Tornado Warning	SHV	Bienville	64 min
Nov 26, 4:43 PM CST	Tornado Warning	SHV	Lincoln	62 min
Nov 26, 4:43 PM CST	Tornado Warning	SHV	Webster	32 min
Nov 26, 5:05 PM CST	Tornado Warning	SHV	Claiborne	55 min
Nov 26, 5:27 PM CST	Severe Thunderstorm Warning	SHV	Jackson	63 min
Nov 26, 4:14 PM CST	Severe Thunderstorm Warning	SHV	Lafayette	61 min
Nov 26, 4:55 PM CST	Tornado Warning	SHV	Union	35 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.