Alert archive / Texas / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 310, NWS Shreveport, LA

November 27, 2005Marion County, Texas

NWS Shreveport, LA issued this severe thunderstorm warning at Nov 27, 2005, 6:39 PM CST for Marion County, Texas. It was in force for 66 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
Nov 27, 2005, 6:39 PM CST (00:39 UTC)
Expired
Nov 27, 2005, 7:45 PM CST
In force
66 min
Issued by
NWS Shreveport, LA
Area
Counties, with a storm outline in the text

County Marion County, TX

The radar

The Shreveport radar (KSHV), 54 km from the middle of the area, began a volume at 00:43 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Nov 27, 2:20 PM CSTTornado WatchSPC8 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 0.7 hours before the alert went out and 58 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-pSkew-T log-p diagram, Shreveport, LA at 00:00Z on 2005-11-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 222 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Shreveport, LA at 00:00Z on 2005-11-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 339 square meters per square second.1939587897117136Sfc1 km3 km6 km9 kmRMLM
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
222 J/kg
Mixed-layer CIN
-75 J/kg
Mixed-layer LCL
1274 m above ground
0-6 km bulk shear
88 kt
0-1 km storm-relative helicity
339 m²/s²
0-3 km storm-relative helicity
477 m²/s²
Significant tornado parameter
0.3
Supercell composite
1.9

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KSHV 280039
SVRSHV
TXC315-280145-
/O.NEW.KSHV.SV.W.0310.051128T0039Z-051128T0145Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
639 PM CST SUN NOV 27 2005

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MARION COUNTY IN NORTHEAST TEXAS

* UNTIL 745 PM CST

* AT 637 PM CST...SHREVEPORT NATIONAL WEATHER SERVICE DOPPLER RADAR
  INDICATED A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING PENNY
  SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS
  WERE LOCATED ALONG A LINE EXTENDING FROM 11 MILES NORTH OF
  JEFFERSON TO 23 MILES SOUTHWEST OF JEFFERSON...OR ALONG A LINE
  EXTENDING FROM 18 MILES SOUTHWEST OF ATLANTA TO 7 MILES EAST OF
  LONGVIEW...AND MOVING EAST AT 45 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  JEFFERSON BY 645 PM CST

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. IF A TORNADO
IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY
STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

REPEATING...THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE
THUNDERSTORM WARNING FOR...
  MARION COUNTY IN NORTHEAST TEXAS
UNTIL 745 PM CST.

LAT...LON 3288 9406 3270 9406 3273 9417 3270 9421
      3277 9426 3270 9437 3272 9454 3275 9454
      3287 9443

$$

17
1 follow-up statement
000 
WWUS54 KSHV 280119
SVSSHV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
717 PM CST SUN NOV 27 2005

TXC315-280145-
/O.CON.KSHV.SV.W.0310.000000T0000Z-051128T0145Z/
MARION TX-
717 PM CST SUN NOV 27 2005

...A SEVERE THUNDERSTORM WARNING CONTINUES UNTIL 745 PM CST FOR
MARION COUNTY...

AT 713 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING GOLF 
BALL SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE 
STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 21 MILES NORTHEAST 
OF JEFFERSON TO 15 MILES SOUTH OF JEFFERSON...MOVING EAST AT 30 MPH.

ONE STORM IN PARTICULAR MAY PRODUCE GOLFBALL SIZED HAIL FROM
CADDO LAKE TO SMITHLAND BY 730 PM CST.

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. IF A TORNADO 
IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY 
STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

LAT...LON 3288 9406 3270 9406 3273 9417 3270 9421
      3277 9426 3270 9437 3272 9454 3275 9454
      3287 9443

$$

17

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 27, 6:10 PM CSTSevere Thunderstorm WarningSHVGregg65 min
Nov 27, 6:27 PM CSTSevere Thunderstorm WarningSHVHarrison48 min
Nov 27, 7:21 PM CSTSevere Thunderstorm WarningSHVHarrison39 min

Nearby

Severe Thunderstorm Warnings in Texas, 2005Every severe thunderstorm warning in 2005

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.