Alert archive / Mississippi / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 544, NWS Jackson, MS
NWS Jackson, MS issued this severe thunderstorm warning at Nov 21, 1997, 1:22 PM CST for Lamar County, Mississippi. It was in force for 38 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 21, 1997, 1:22 PM CST (19:22 UTC)
- Expired
- Nov 21, 1997, 2:00 PM CST
- In force
- 38 min
- Issued by
- NWS Jackson, MS
- Area
- Whole counties
County Lamar County, MS
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Nov 21, 11:15 AM CST | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 7.4 hours before the alert went out and 108 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
- 20 J/kg
- Mixed-layer CIN
- -114 J/kg
- Mixed-layer LCL
- 981 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 192 m²/s²
- 0-3 km storm-relative helicity
- 207 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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, 9:59 AM CST, 3 hours 23 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 1000 AM CST FRI NOV 21 1997 AN APPROACHING COLD FRONT COMBINE WITH...LOW PRESSURE ALOFT AND A INFLOW OF RICH GULF MOISTURE WILL PROVIDE SHOWERS AND THUNDERSTORMS ACROSS THE REGION UNTIL EARLY THIS EVENING. ISOLATED SEVERE THUNDER- STORMS WILL BE POSSIBLE OVER THE SOUTH HALF OF THE REGION THIS AFTERNOON AS INSTABILITY INCREASES. SOME OF THE STORMS WILL HAVE THE POTENTIAL OF PRODUCING HAIL...LOCALLY HEAVY RAINS AND GUSTY WINDS. ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS OR EMERGENCY MANAGEMENT PERSONNEL SHOULD NOT BE REQUIRED TODAY OR TONIGHT. FOR MORE WEATHER INFORMATION PLEASE VISIT OUR INTERNET SITE ON THE WORLD WIDE WEB AT --- HTTP://WWW.JANNWS.STATE.MS.US/
Special weather statement, Nov 21, 10:00 AM CST, 3 hours 22 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 1000 AM CST FRI NOV 21 1997 AN APPROACHING COLD FRONT COMBINE WITH...LOW PRESSURE ALOFT AND A INFLOW OF RICH GULF MOISTURE WILL PROVIDE SHOWERS AND THUNDERSTORMS ACROSS THE REGION UNTIL EARLY THIS EVENING. ISOLATED SEVERE THUNDER- STORMS WILL BE POSSIBLE OVER THE SOUTH HALF OF THE REGION THIS AFTERNOON AS INSTABILITY INCREASES. SOME OF THE STORMS WILL HAVE THE POTENTIAL OF PRODUCING HAIL...LOCALLY HEAVY RAINS AND GUSTY WINDS. ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS OR EMERGENCY MANAGEMENT PERSONNEL SHOULD NOT BE REQUIRED TODAY OR TONIGHT. FOR MORE WEATHER INFORMATION PLEASE VISIT OUR INTERNET SITE ON THE WORLD WIDE WEB AT --- HTTP://WWW.JANNWS.STATE.MS.US/
Special weather statement, Nov 21, 10:59 AM CST, 2 hours 23 minutes before
ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>029-032>066- 072>074-220400- AREA THUNDERSTORM OUTLOOK...UPDATED... NATIONAL WEATHER SERVICE JACKSON MS 1100 AM CST FRI NOV 21 1997 AN APPROACHING COLD FRONT COMBINE WITH...LOW PRESSURE ALOFT AND A INFLOW OF RICH GULF MOISTURE WILL PROVIDE SHOWERS AND THUNDERSTORMS ACROSS THE REGION UNTIL EARLY THIS EVENING. SEVERE THUNDERSTORMS WILL BE POSSIBLE OVER THE SOUTHERN PART OF THE REGION THIS AFTERNOON AS INSTABILITY INCREASES. SOME OF THE STORMS WILL HAVE THE POTENTIAL OF PRODUCING HAIL...LOCALLY HEAVY RAINS...GUSTY WINDS... HAIL AND POSSIBLE TORNADOES. ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS OR EMERGENCY MANAGEMENT PERSONNE L MAY BE BE REQUIRED THIS AFTERNOON. FOR MORE WEATHER INFORMATION PLEASE VISIT OUR INTERNET SITE ON THE WORLD WIDE WEB AT --- HTTP://WWW.JANNWS.STATE.MS.US/
Special weather statement, Nov 21, 11:00 AM CST, 2 hours 22 minutes before
ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>029-032>066- 072>074-220400- AREA THUNDERSTORM OUTLOOK...UPDATED... NATIONAL WEATHER SERVICE JACKSON MS 1100 AM CST FRI NOV 21 1997 AN APPROACHING COLD FRONT COMBINE WITH...LOW PRESSURE ALOFT AND A INFLOW OF RICH GULF MOISTURE WILL PROVIDE SHOWERS AND THUNDERSTORMS ACROSS THE REGION UNTIL EARLY THIS EVENING. SEVERE THUNDERSTORMS WILL BE POSSIBLE OVER THE SOUTHERN PART OF THE REGION THIS AFTERNOON AS INSTABILITY INCREASES. SOME OF THE STORMS WILL HAVE THE POTENTIAL OF PRODUCING...LOCALLY HEAVY RAINS...GUSTY WINDS... FREQUENT LIGHTNING...HAIL AND POSSIBLE TORNADOES. ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS OR EMERGENCY MANAGEMENT PERSONNEL MAY BE BE REQUIRED THIS AFTERNOON. FOR MORE WEATHER INFORMATION PLEASE VISIT OUR INTERNET SITE ON THE WORLD WIDE WEB AT --- HTTP://WWW.JANNWS.STATE.MS.US/
Special weather statement, Nov 21, 11:01 AM CST, 2 hours 21 minutes before
ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>029-032>066- 072>074-220400- AREA THUNDERSTORM OUTLOOK...UPDATED... NATIONAL WEATHER SERVICE JACKSON MS 1100 AM CST FRI NOV 21 1997 AN APPROACHING COLD FRONT COMBINE WITH...LOW PRESSURE ALOFT AND A INFLOW OF RICH GULF MOISTURE WILL PROVIDE SHOWERS AND THUNDERSTORMS ACROSS THE REGION UNTIL EARLY THIS EVENING. SEVERE THUNDERSTORMS WILL BE POSSIBLE OVER THE SOUTHERN PART OF THE REGION THIS AFTERNOON AS INSTABILITY INCREASES. SOME OF THE STORMS WILL HAVE THE POTENTIAL OF PRODUCING...LOCALLY HEAVY RAINS...GUSTY WINDS... FREQUENT LIGHTNING...HAIL AND POSSIBLE TORNADOES. ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS OR EMERGENCY MAN&AGEMENT PERSONNEL MAY BE BE REQUIRED THIS AFTERNOON. FOR MORE WEATHER INFORMATION PLEASE VISIT OUR INTERNET SITE ON THE WORLD WIDE WEB AT --- HTTP://WWW.JANNWS.STATE.MS.US/
The office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 21, 10:45 AM CST | Severe Thunderstorm Warning | JAN | Kemper | 30 min |
| Nov 21, 10:56 AM CST | Tornado Warning | JAN | Kemper | 34 min |
| Nov 21, 12:24 PM CST | Severe Thunderstorm Warning | JAN | Lincoln | 51 min |
| Nov 21, 12:53 PM CST | Severe Thunderstorm Warning | JAN | Marion | 37 min |
| Nov 21, 1:37 PM CST | Severe Thunderstorm Warning | JAN | Forrest | 38 min |
Nearby
Severe Thunderstorm Warnings in Mississippi, 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; the sounding from the Mesonet's radiosonde archive.