Alert archive / Louisiana / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 466, NWS Jackson, MS
NWS Jackson, MS issued this severe thunderstorm warning at Oct 21, 1997, 12:41 PM CDT for Morehouse Parish, Louisiana. It was in force for 49 min. 1 report 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
- Oct 21, 1997, 12:41 PM CDT (17:41 UTC)
- Expired
- Oct 21, 1997, 1:30 PM CDT
- In force
- 49 min
- Issued by
- NWS Jackson, MS
- Area
- Whole counties
County Morehouse Parish, LA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Oct 21, 12:50 PM CDT | Hail 0.75 | Bastrop, 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.
The nearest sounding before it
Jackson, MS (KJAN), launched 12:00Z, 5.7 hours before the alert went out and 171 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
- 255 J/kg
- Mixed-layer CIN
- -68 J/kg
- Mixed-layer LCL
- 1005 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 122 m²/s²
- 0-3 km storm-relative helicity
- 95 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KJAN 211742 RRA SVRJAN LAC067-211830- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE JACKSON MS 1241 PM CDT TUE OCT 21 1997 THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 130 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN NORTHEAST LOUISIANA ...MOREHOUSE PARISH AT 1240 PM A SEVERE THUNDERSTORM WAS INDICATED NEAR BASTROP MOVING SOUTHEAST AT 15 MPH. THIS STORM WILL AFFECT MUCH OF BASTROP AND POSSIBLY THE MER ROUGE AREA BY 100 PM. PEOPLE NEAR THE STORM SHOULD MOVE INSIDE A STRONG BUILDING AWAY FROM WINDOWS. DON'T USE TELEPHONES OR ELECTRICAL APPLIANCES UNTIL THE STORM HAS PASSED. MOTORISTS DONN'T DRIVE INTO WATER CROSSINGS. < 77
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, Oct 21, 10:25 AM CDT, 2 hours 16 minutes before
ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>029-032>066- 072>074-220400- AREA THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE JACKSON MS 1025 AM CDT TUE OCT 21 1997 SCATTERED THUNDERSTORMS ARE EXPECTED THROUGH TONIGHT AS A COLD FRONT MOVES SOUTHEASTWARD ACROSS THE AREA. MOST OF THE STORMS SHOULD REMAIN ALONG AND JUST BEHIND THE FRONT SINCE THE AIRMASS REMAINED RATHER DRY AHEAD OF IT. DUE TO LIMITED INSTABILITY AND WEAK LOW LEVEL WINDS... NO SEVERE WEATHER IS EXPECTED. HOWEVER...ISOLATED STRONG STORMS ARE LIKELY WITH FREQUENT LIGHTNING STRIKES...GUSTY WINDS AND BRIEF HEAVY RAINS AND THE STORMS WILL GENERALLY BE MOVING EAST AT 30 TO 40 MPH. ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS...AND EMERGENCY MANAGEMENT PERSONNEL SHOULD NOT BE REQUIRED THROUGH TONIGHT. FOR MORE WEATHER INFORMATION...PLEASE VISIT OUR INTERNET SITE ONTHE WORLD WIDE WEB AT - HTTP:/WWW.JANNWS.STATE.MS.US/ (IN LOWE CASE).
Special weather statement, Oct 21, 10:28 AM CDT, 2 hours 13 minutes before
ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>029-032>066- 072>074-220400- AREA THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE JACKSON MS 1025 AM CDT TUE OCT 21 1997 SCATTERED THUNDERSTORMS ARE EXPECTED THROUGH TONIGHT AS A COLD FRONT MOVES SOUTHEASTWARD ACROSS THE AREA. MOST OF THE STORMS SHOULD REMAIN ALONG AND JUST BEHIND THE FRONT SINCE THE AIRMASS REMAINED RATHER DRY AHEAD OF IT. DUE TO LIMITED INSTABILITY AND WEAK LOW LEVEL WINDS... NO SEVERE WEATHER IS EXPECTED. HOWEVER...ISOLATED STRONG STORMS ARE LIKELY WITH FREQUENT LIGHTNING STRIKES...GUSTY WINDS AND BRIEF HEAVY RAINS AND THE STORMS WILL GENERALLY BE MOVING EAST AT 30 TO 40 MPH. ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS...AND EMERGENCY MANAGEMENT PERSONNEL SHOULD NOT BE REQUIRED THROUGH TONIGHT. FOR MORE WEATHER INFORMATION...PLEASE VISIT OUR INTERNET SITE ONTHE WORLD WIDE WEB AT - HTTP:/WWW.JANNWS.STATE.MS.US/ (IN LOWE CASE).
The office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 21, 1:51 PM CDT | Severe Thunderstorm Warning | JAN | West Carroll | 39 min |
| Oct 21, 2:11 PM CDT | Severe Thunderstorm Warning | JAN | East Carroll | 34 min |
Nearby
Severe Thunderstorm Warnings in Louisiana, 1997Every severe thunderstorm warning in 1997
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.