Alert archive / Mississippi / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 241, NWS Jackson, MS
NWS Jackson, MS issued this severe thunderstorm warning at May 9, 1998, 2:04 PM CDT for Washington County, Mississippi. It was in force for 31 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
- May 9, 1998, 2:04 PM CDT (19:04 UTC)
- Expired
- May 9, 1998, 2:35 PM CDT
- In force
- 31 min
- Issued by
- NWS Jackson, MS
- Area
- Whole counties
County Washington County, MS
The nearest sounding before it
Jackson, MS (KJAN), launched 12:00Z, 7.1 hours before the alert went out and 134 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2055 m above ground
- 0-6 km bulk shear
- 74 kt
- 0-1 km storm-relative helicity
- 303 m²/s²
- 0-3 km storm-relative helicity
- 533 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
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, May 9, 10:20 AM CDT, 3 hours 44 minutes before
ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>029-032>066-072> 074-100400- AREA THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE JACKSON MS 1020 AM CDT SAT MAY 9 1998 ...THERE IS A THREAT SEVERE THUNDERSTORMS AND TORNDOES OVER NORTHERN MISSISSIPPI AND THE SOUTHEAST CORNER OF ARKANSAS THIS AFTERNOON AND EVENING... A LOW PRESSURE CENTER WILL MOVE EAST ACROSS SOUTH ARKANSAS AND NORTH MISSISSIPPI THIS AFTERNOON AND EVENING. MOISTURE IS EXPECTED TO BE CONCENTRATED ALONG AND NORTH OF A WARM FRONT THAT WILL EXTEND SOUTHEAST OR EAST FROM THE LOW. MOISTURE THAT WILL LIFT OVER THE FRONT WILL PRODUCE STRONG TO SEVERE THUNDERSTORMS FROM THE ARKANSAS / LOUISIANA BORDER AREA OF NORTHEAST LOUISIANA AND ACROSS NORTHERN MISSISIPPI NORTH OF YAZOO CITY TO PHILADELPHIA. AS THE LOW APPROACHES...LOW LEVEL SOUTHERLY WINDS WILL INCREASE AT THE SAME TIME STRONG UPPER LEVEL WINDS IN A JET STREAM WILL BE OVER THE AREA. THESE STRONG AND TURNING WINDS WILL PRODUCE CONDITIONS THAT COULD CAUSE TORNADOES ACROSS THE SAME AREA. IT WILL PROBABLY BE NECESSARY TO REQIEST THE ASSISTANCE OF STORM SPOTTERS...HAM RADIO OPERATORS...AND PUBLIC SAFETY OFFICIALS IN SEVERE WEATHER DETECTION AND WARNING LATER THIS AFTERNOON AND THIS EVNING. FOR MORE INFORMATION VISIT OUR WEB SITE AT: HTTP://WWW.JANNWS.STATE.MS.US /IN LOWER CASE LETTERS/
Special weather statement, May 9, 10:20 AM CDT, 3 hours 44 minutes before
ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>029-032>066-072> 074-100400- AREA THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE JACKSON MS 1020 AM CDT SAT MAY 9 1998 ...THERE IS A THREAT SEVERE THUNDERSTORMS AND TORNDOES OVER NORTHERN MISSISSIPPI AND THE SOUTHEAST CORNER OF ARKANSAS THIS AFTERNOON AND EVENING... A LOW PRESSURE CENTER WILL MOVE EAST ACROSS SOUTH ARKANSAS AND NORTH MISSISSIPPI THIS AFTERNOON AND EVENING. MOISTURE IS EXPECTED TO BE CONCENTRATED ALONG AND NORTH OF A WARM FRONT THAT WILL EXTEND SOUTHEAST OR EAST FROM THE LOW. MOISTURE THAT WILL LIFT OVER THE FRONT WILL PRODUCE STRONG TO SEVERE THUNDERSTORMS FROM THE ARKANSAS / LOUISIANA BORDER AREA OF NORTHEAST LOUISIANA AND ACROSS NORTHERN MISSISIPPI NORTH OF YAZOO CITY TO PHILADELPHIA. AS THE LOW APPROACHES...LOW LEVEL SOUTHERLY WINDS WILL INCREASE AT THE SAME TIME STRONG UPPER LEVEL WINDS IN A JET STREAM WILL BE OVER THE AREA. THESE STRONG AND TURNING WINDS WILL PRODUCE CONDITIONS THAT COULD CAUSE TORNADOES ACROSS THE SAME AREA. IT WILL PROBABLY BE NECESSARY TO REQIEST THE ASSISTANCE OF STORM SPOTTERS...HAM RADIO OPERATORS...AND PUBLIC SAFETY OFFICIALS IN SEVERE WEATHER DETECTION AND WARNING LATER THIS AFTERNOON AND THIS EVNING. FOR MORE INFORMATION VISIT OUR 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 |
|---|---|---|---|---|
| May 9, 2:35 PM CDT | Severe Thunderstorm Warning | JAN | Washington | 35 min |
| May 9, 3:58 PM CDT | Severe Thunderstorm Warning | JAN | Carroll, Holmes | 32 min |
| May 9, 5:11 PM CDT | Severe Thunderstorm Warning | JAN | Attala, Choctaw, Montgomery | 49 min |
| May 9, 5:31 PM CDT | Tornado Warning | JAN | Attala, Choctaw | 34 min |
| May 9, 5:56 PM CDT | Tornado Warning | JAN | Oktibbeha | 34 min |
| May 9, 6:10 PM CDT | Tornado Warning | JAN | Winston | 20 min |
| May 9, 6:17 PM CDT | Tornado Warning | JAN | Noxubee | 33 min |
| May 9, 6:32 PM CDT | Severe Thunderstorm Warning | JAN | Winston | 33 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.