Alert archive / Mississippi / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 541, NWS Jackson, MS
NWS Jackson, MS issued this severe thunderstorm warning at Nov 21, 1997, 10:45 AM CST for Kemper County, Mississippi. It was in force for 30 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
- Nov 21, 1997, 10:45 AM CST (16:45 UTC)
- Expired
- Nov 21, 1997, 11:15 AM CST
- In force
- 30 min
- Issued by
- NWS Jackson, MS
- Area
- Whole counties
County Kemper County, MS
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Nov 21, 10:50 AM CST | Hail 0.75 | De Kalb, MS |
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, 4.8 hours before the alert went out and 143 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
- 36 J/kg
- Mixed-layer CIN
- -55 J/kg
- Mixed-layer LCL
- 735 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 138 m²/s²
- 0-3 km storm-relative helicity
- 192 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 211645 RRA SVRJAN MSC069-211715- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE JACKSON MS 1045 AM CST FRI NOV 21 1997 THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1115 AM CST FOR PEOPLE IN THE FOLLOWING LOCATION... IN EAST CENTRAL MISSISSIPPI ...KEMPER COUNTY AT 1043 AM CST JACKSON DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM ABOUT 6 MILES SOUTHWEST OF DEKALB MOVING EAST AT 30 MPH. LARGE HAIL AND DAMAGING WIND GUSTS IN EXCESS OF 55 MPH ARE LIKELY WITH THIS STORM IN THE DEKALB AREA BY 1050 AM CST. THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE FOR WIND IN EXCESS OF 55 MPH...DExSTRUCTIVE HAIL...AND DEADLY LIGHTNING. PEOPLE OUTSIDE SHOULD SEEK SHELTER INSIDE A STRONG BUILDING. <
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, 46 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, 45 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/
The office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| 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, 1:22 PM CST | Severe Thunderstorm Warning | JAN | Lamar | 38 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.