Alert archive / Louisiana / Severe Thunderstorm Warnings in 1992
Severe Thunderstorm Warning 49, NWS Shreveport, LA
NWS Shreveport, LA issued this severe thunderstorm warning at Mar 18, 1992, 3:38 AM CST for Columbia County, Arkansas; Claiborne Parish, Webster Parish, Louisiana. It was in force for 67 min. 2 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
- Mar 18, 1992, 3:38 AM CST (09:38 UTC)
- Expired
- Mar 18, 1992, 4:45 AM CST
- In force
- 67 min
- Issued by
- NWS Shreveport, LA
- Area
- Whole counties
Counties Columbia County, AR, Claiborne Parish, LA, Webster Parish, LA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 18, 4:00 AM CST | Hail 0.88 | Webster, LA | |
| Mar 18, 4:25 AM CST | Hail 1 | Claiborne, 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
Longview/Gregg, TX (KGGG), launched 00:00Z, 9.6 hours before the alert went out and 147 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
- 352 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 581 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- 251 m²/s²
- 0-3 km storm-relative helicity
- 339 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 3.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSHV 180938 SVRSHV ARC027-LAC013-027-081-119-181045- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SHREVEPORT LA 338 AM CST WED MAR 18 1992 THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 445 AM CST FOR PEOPLE IN THE FOLLOWING LOCATIONS.. IN SOUTHWEST ARKANSAS ...COLUMBIA COUNTY IN NORTHWEST LOUISIANA ...BIENVILLE PARISH...CLAIBORNE PARISH...RED RIVER PARISH ...WEBSTER PARISH AT 335 AM WEATHER SERVICE RADAR IN SHREVEPORT INDICATED A LINE OF THUNDERSTORMS EXTENDING FROM NEAR MAGNOLIA ARKANSAS TO JUST WEST OF MINDEN LOUISIANA TO MANSFIELD TO SAN AUGUSTINE TEXAS. MOVEMENT WAS EAST AT 40 MPH. WINDS OF 50 TO 60 MPH ALONG WITH HEAVY RAINFALL AND DANGEROUS LIGHTNING HAVE OCCURRED WITH THIS LINE. WINDS GUSTED TO 52 MPH AT THE SHREVEPORT REGIONAL AIRPORT AT 318 AM. A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. REMAIN CALM BUT BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS.
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, Mar 17, 10:50 PM CST, 4 hours 48 minutes before
TXZ023-027-033-ARZ009-LAZ001-002-003-004-005-006-OKZ040-180645- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SHREVEPORT LA 1050 PM CST TUE MAR 17 1992 ...TORNADO WATCH IN EFFECT FOR NORTHEAST TEXAS...SOUTHEAST OKLAHOMA... SOUTHWEST ARKANSAS...AND NORTHWEST LOUISIANA UNTIL 4 AM... ..SEVERE THUNDERSTORM WARNING NO LONGER IN EFFECT FOR PIKE AND HOWARD COUNTIES IN SOUTHWEST ARKANSAS... AT 1045 PM WEATHER SERVICE RADAR IN SHREVEPORT INDICATED SHOWERS AND THUNDERSTORMS OVER SOUTHWEST ARKANSAS...SOUTHEAST OKLAHOMA... INTO NORTHEAST TEXAS. THIS ACTIVITY WAS NORTHWEST OF A LINE FROM ARKADELPHIA ARKANSAS TO DEQUEEN TO IDABEL OKLAHOMA TO PARIS TEXAS ON TO ATHENS. HEAVY RAINFALL WAS INDICATED JUST NORTH OF ARKADELPHIA ARKANSAS TO NEAR GILLHAM TO NEAR EAGLETON OKLAHOMA AND ALSO NEAR HUGO. MOVEMENT WAS TO THE NORTHEAST AT 30 MPH. THE THUNDERSTORMS WILL PRODUCE HEAVY RAINFALL OF UP TO ONE INCH ALONG WITH STRONG GUSTY WINDS AND FREQUENT LIGHTNING. THE CHANCE OF SHOWERS AND THUNDERSTORMS WILL CONTINUE THROUGH WEDNESDAY WITH SOME STORMS REACHING SEVERE INTENSITY WITH LOCALLY HEAVY RAINFALL.
Special weather statement, Mar 18, 1:02 AM CST, 2 hours 36 minutes before
TXZ023-027-033-ARZ009-LAZ001-002-003-004-005-006-OKZ040-180645- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SHREVEPORT LA 100 AM CST WED MAR 18 1992 ...TORNADO WATCH IN EFFECT FOR NORTHEAST TEXAS...SOUTHEAST OKLAHOMA... SOUTHWEST ARKANSAS...AND NORTHWEST LOUISIANA UNTIL 4 AM... AT 1255 AM WEATHER SERVICE RADAR IN SHREVEPORT INDICATED SHOWERS AND THUNDERSTORMS OVER SOUTHWEST ARKANSAS...SOUTHEAST OKLAHOMA... INTO NORTHEAST TEXAS. THIS ACTIVITY WAS NORTHWEST OF A LINE FROM CENTERVILLE TO GRAPELAND TO CUSHING TO CARTHAGE TO WASKOM TEXAS... ON TO OIL CITY AND IDA LOUISIANA...ON TO STAMPS AND WATERLOO ARKANSAS. THE HEAVIEST RAINFALL WAS LOCATED NEAR CARTHAGE...MARSHALL...OMAHA AND NAPLES TEXAS...NEAR OIL CITY LOUISIANA...AND NEAR HOPE ARKANSAS. A BAND OF SHOWERS AND THUNDERSTORMS WAS ALSO INDICATED FROM NEAR STONEWALL TO RINGGOLD LOUISIANA. THE HEAVIEST RAINFALL WAS OCCURRING NORTH OF GRAND CANE LOUISIANA. MOVEMENT WAS TO THE NORTHEAST AT 30 MPH. THE THUNDERSTORMS WILL PRODUCE HEAVY RAINFALL OF UP TO ONE INCH ALONG WITH STRONG GUSTY WINDS AND FREQUENT LIGHTNING. THE CHANCE OF SHOWERS AND THUNDERSTORMS WILL CONTINUE THROUGH WEDNESDAY WITH SOME STORMS REACHING SEVERE INTENSITY WITH LOCALLY HEAVY RAINFALL.
Special weather statement, Mar 18, 2:36 AM CST, 1 hour 2 minutes before
TXZ023-027-033-ARZ009-LAZ001-002-003-004-005-006-OKZ040-181030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SHREVEPORT LA 235 AM CST WED MAR 18 1992 ...TORNADO WATCH IN EFFECT FOR NORTHEAST TEXAS...SOUTHEAST OKLAHOMA... SOUTHWEST ARKANSAS...AND NORTHWEST LOUISIANA UNTIL 4 AM... AT 235 AM WEATHER SERVICE RADAR IN SHREVEPORT INDICATED A LARGE AREA OF SHOWERS AND THUNDERSTORMS OVER NORTHEAST TEXAS ACROSS NORTHWEST LOUISIANA AND SOUTHWEST ARKANSAS. WITHIN THIS AREA A 15 MILE WIDE BAND OF THUNDERSTORMS EXTENDED FROM RODESSA LOUISIANA TO WASKOM TEXAS ON TO NACOGADOCHES TEXAS. THESE THUNDERSTORMS ARE PRODUCING BRIEF HEAVY RAINFALL OF ONE HALF TO ONE INCH ALONG WITH GUSTY WINDS OF 25 TO 35 MPH AND FREQUENT LIGHTNING. THE AREA WAS MOVING TO THE EAST AT 25 MPH. ACROSS SOUTHWEST ARKANSAS...RAINFALL OF ONE TO THREE INCHES OCCURRED TUESDAY EVENING. LIGHT AND MODERATE RAINFALL WAS INDICATED OVER THIS AREA AT 235 AM. ADDITIONAL HEAVY RAIcNFALL MAY CAUSE FLOODING OF LOW AND POOR DRAINAGE AREAS. SHOWERS AND THUNDERSTORMS WILL CONTINUE THROUGH WEDNESDAY ACROSS THE AREA WITH SOME STORMS REACHING SEVERE INTENSITY ALONG WITH LOCALLY HEAVY RAINFALL.
The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 17, 9:34 PM CST | Severe Thunderstorm Warning | SHV | Howard, Pike | 56 min |
| Mar 18, 2:54 AM CST | Severe Thunderstorm Warning | SHV | Bossier, Caddo, De Soto | 66 min |
| Mar 18, 3:38 AM CST | Severe Thunderstorm Warning | SHV | Bienville, Red River | 67 min |
| Mar 18, 3:52 AM CST | Severe Thunderstorm Warning | SHV | Natchitoches, Sabine | 68 min |
| Mar 18, 4:29 AM CST | Severe Thunderstorm Warning | SHV | Lincoln, Union | 61 min |
| Mar 18, 4:29 AM CST | Severe Thunderstorm Warning | SHV | Jackson | 61 min |
| Mar 18, 4:45 AM CST | Severe Thunderstorm Warning | SHV | Winn | 60 min |
| Mar 18, 5:07 AM CST | Severe Thunderstorm Warning | SHV | Caldwell, Ouachita | 68 min |
| Mar 18, 5:32 AM CST | Severe Thunderstorm Warning | SHV | Franklin, Richland | 58 min |
| Mar 18, 5:51 AM CST | Severe Thunderstorm Warning | SHV | East Carroll, Madison | 69 min |
| Mar 18, 3:11 PM CST | Severe Thunderstorm Warning | SHV | Natchitoches, Sabine | 59 min |
| Mar 18, 4:49 PM CST | Severe Thunderstorm Warning | SHV | Jackson, Lincoln | 116 min |
Nearby
Severe Thunderstorm Warnings in Louisiana, 1992Severe Thunderstorm Warnings in Arkansas, 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.