Alert archive / Louisiana / Severe Thunderstorm Warnings in 1992
Severe Thunderstorm Warning 352, NWS Shreveport, LA
NWS Shreveport, LA issued this severe thunderstorm warning at Nov 21, 1992, 9:15 PM CST for Franklin Parish, Tensas Parish, Louisiana. It was in force for 60 min. 4 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Nov 21, 1992, 9:15 PM CST (03:15 UTC)
- Expired
- Nov 21, 1992, 10:15 PM CST
- In force
- 60 min
- Issued by
- NWS Shreveport, LA
- Area
- Whole counties
Counties Franklin Parish, LA, Tensas Parish, LA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Nov 21, 9:30 PM CST | Hail 1.75 | Tensas, LA | |
| Nov 21, 9:40 PM CST | Hail 1.75 | Franklin, LA | |
| Nov 21, 9:58 PM CST | Tornado F3 | Tensas, LA | |
| Nov 21, 10:18 PM CST | Tornado F2 | Tensas, LA |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Jackson, MS (KJAN), launched 00:00Z, 3.3 hours before the alert went out and 137 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.
- Mixed-layer CAPE
- 642 J/kg
- Mixed-layer CIN
- -20 J/kg
- Mixed-layer LCL
- 1047 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 69 m²/s²
- 0-3 km storm-relative helicity
- 69 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
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.
In the hours before
Special weather statement, Nov 21, 3:58 PM CST, 5 hours 17 minutes before
OKZ040-021-034-TXZ022-023-027-028-032-033-ARZ009-010-011-016-LAZ001- 002-003-004-005-006-212300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SHREVEPORT LA 400 PM CST SAT NOV 21 1992 ...SEVERE STORMS LIKELY OVER THE SOUTHEAST HALF OF THE ARKLATEX LATE THIS AFTERNOON AND TONIGHT...A TORNADO WATCH HAS BEEN ISSUED FOR A LARGE PART OF LOUISIANA UNTIL 1100 PM CST... THE MOST FAVORABLE AREA FOR SEVERE STORMS AND POSSIBLE TORNADOES WILL BE OVER THE SOUTHEAST HALF OF THE ARKLATEX AS NEW STORMS DEVELOP RAPIDLY AHEAD OF AN EASTWARD MOVING INCREASING LINE OF THUNDERSTORMS OVER EASTERN TEXAS AT 4 PM CST. AT 4 PM CST THE NATIONAL WEATHER SERVICE RADAR IN SHREVEPORT SHOWED A BAND OF INCREASING SHOWERS AND THUNDERSTORMS FROM NEAR DEQUEEN ARKANSAS SOUTH TO NEAR CLARKSVILLE TEXAS ON TO NEAR LONGVIEW AND ON TO HOUSTON TEXAS. SEVERE STORMS HAVE ALREADY OCCURRED IN THE HOUSTON AREA THIS AFTERNOON WITH TORNADOES REPORTED IN THE HOUSTON METROPOLITAN AREA. THE STRONGEST STORMS IN EAST TEXAS WERE LOCATED FROM NEAR LONGVIEW TO NACOGDOCHES TEXAS. THE SYSTEM CONTINUES TO MOVE TO THE EAST AT 15 TO 20 MPH...WHILE INDIVIDUAL THUNDERSTORMS WERE MOVING THE THE NORTHEAST AT 35 MPH. AS THIS BAND MOVES EASTWARD...STORMS WILL CONTINUE TO INCREASE...ALSO CONDITIONS ARE FAVORABLE FOR THUNDERSTORMS TO DEVELOP RAPIDLY AHEAD OF THE OLD BAND ACROSS EAST CENTRAL TEXAS AND WESTERN LOUISIANA. BESIDES THE THREAT OF SEVERE STORMS...LOCALIZED FLOODING MAY DEVELOP WITH THE PASSAGE OF THE THUNDERSTORMS...HOWEVER AREA STREAMS REMAIN BELOW NORMAL FOR THIS TIME OF YEAR. EXCEPT IN URBAN ARAS ANY FLOODING WOULD BE SLOW TO DEVELOP.
The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 21, 7:27 PM CST | Severe Thunderstorm Warning | SHV | Natchitoches | 48 min |
| Nov 21, 7:58 PM CST | Severe Thunderstorm Warning | SHV | Morehouse, West Carroll | 62 min |
| Nov 21, 9:52 PM CST | Tornado Warning | SHV | Tensas | 68 min |
Nearby
Severe Thunderstorm Warnings in Louisiana, 1992Every severe thunderstorm warning in 1992
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.