Alert archive / Mississippi / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 532, NWS Jackson, MS
NWS Jackson, MS issued this severe thunderstorm warning at Aug 11, 1998, 2:17 PM CDT for Jefferson County, Mississippi. It was in force for 33 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
- Aug 11, 1998, 2:17 PM CDT (19:17 UTC)
- Expired
- Aug 11, 1998, 2:50 PM CDT
- In force
- 33 min
- Issued by
- NWS Jackson, MS
- Area
- Whole counties
County Jefferson County, MS
The nearest sounding before it
Jackson, MS (KJAN), launched 12:00Z, 7.3 hours before the alert went out and 111 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
- 1475 J/kg
- Mixed-layer CIN
- -84 J/kg
- Mixed-layer LCL
- 1306 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- -6 m²/s²
- 0-3 km storm-relative helicity
- -21 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 111917 RRA SVRJAN MSC063-111950- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE JACKSON MS 217 PM CDT TUE AUG 11 1998 THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EASTERN JEFFERSON COUNTY IN SOUTHWESTERN MISSISSIPPI * UNTIL 250 PM CDT * AT 215 PM CDT... RADAR INDICATED A DEVELOPING SEVERE THUNDERSTORM 17 MILES EAST OF FAYETTE OR JUST EAST OF UNION CHURCH MOVING SOUTHEAST AT 5 MPH. * THIS STORM WILL MAINLY AFFECT SMALLER COMMUNITIES AND RURAL AREAS. DAMAGING WINDS AND HEAVY RAIN ARE LIKELY. GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS! 64
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, Aug 11, 10:00 AM CDT, 4 hours 17 minutes before
ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>029-032>066-072> 074-120400- AREA THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE JACKSON MS 1000 AM CDT TUE AUG 11 1998 SURFACE HEATING AND A MOIST...UNSTABLE AIRMASS WILL COMBINE TO PRODUCE SCATTERED THUNDERSTORMS ACROSS THE REGION THROUGH THIS EVENING. AN OUTFLOW BOUNDARY FROM PRIOR CONVECTION IN ARKANSAS WILL MOVE INTO PORTIONS OF CENTRAL MISSISSIPPI AND NORTHEAST LOUISIANA THIS AFTERNOON AND SERVE TO FOCUS THUNDERSTORM ACTIVITY. ALTHOUGH NO ORGANIZED SEVERE THUNDERSTORMS ARE EXPECTED...SOME OF THE STRONGER STORMS WILL LIKELY CONTAIN GUSTY WINDS AROUND 40 MPH...HEAVY RAIN...SMALL HAIL AND FREQUENT LIGHTNING. THESE STRONGER STORMS WILL MAINLY BE CONFINED TO PORTIONS OF CENTRAL AND SOUTHWEST MISSISSIPPI AND NORTHEAST LOUISIANA IN THE MORE UNSTABLE AIR. ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS...AND EMERGENCY MANAGEMENT/CIVIL DEFENSE PERSONNEL IS NOT ANTICIPATED THROUGH TONIGHT. FOR MORE INFORMATION...PLEASE VISIT OUR INTERNET WEB SITE AT: HTTP://WWW.JANNWS.STATE.MS.US /IN LOWER CASE LETTERS/
Special weather statement, Aug 11, 10:00 AM CDT, 4 hours 17 minutes before
ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>029-032>066-072> 074-120400- AREA THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE JACKSON MS 1000 AM CDT TUE AUG 11 1998 SURFACE HEATING AND A MOIST...UNSTABLE AIRMASS WILL COMBINE TO PRODUCE SCATTERED THUNDERSTORMS ACROSS THE REGION THROUGH THIS EVENING. AN OUTFLOW BOUNDARY FROM PRIOR CONVECTION IN ARKANSAS WILL MOVE INTO PORTIONS OF CENTRAL MISSISSIPPI AND NORTHEAST LOUISIANA THIS AFTERNOON AND SERVE TO FOCUS THUNDERSTORM ACTIVITY. ALTHOUGH NO ORGANIZED SEVERE THUNDERSTORMS ARE EXPECTED...SOME OF THE STRONGER STORMS WILL LIKELY CONTAIN GUSTY WINDS AROUND 40 MPH...HEAVY RAIN...SMALL HAIL AND FREQUENT LIGHTNING. THESE STRONGER STORMS WILL MAINLY BE CONFINED TO PORTIONS OF CENTRAL AND SOUTHWEST MISSISSIPPI AND NORTHEAST LOUISIANA IN THE MORE UNSTABLE AIR. ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS...AND EMERGENCY MANAGEMENT/CIVIL DEFENSE PERSONNEL IS NOT ANTICIPATED THROUGH TONIGHT. FOR MORE INFORMATION...PLEASE VISIT OUR INTERNET WEB SITE AT: HTTP://WWW.JANNWS.STATE.MS.US /IN LOWER CASE LETTERS/
The office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 11, 12:19 PM CDT | Severe Thunderstorm Warning | JAN | Lawrence | 36 min |
| Aug 11, 12:55 PM CDT | Severe Thunderstorm Warning | JAN | Lawrence | 35 min |
| Aug 11, 1:48 PM CDT | Severe Thunderstorm Warning | JAN | Simpson | 47 min |
| Aug 11, 2:07 PM CDT | Severe Thunderstorm Warning | JAN | Copiah | 48 min |
| Aug 11, 2:51 PM CDT | Severe Thunderstorm Warning | JAN | Simpson | 49 min |
Nearby
Severe Thunderstorm Warnings in Mississippi, 1998Every severe thunderstorm warning in 1998
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.