Alert archive / Mississippi / Tornado Warnings in 1999
Tornado Warning 97, NWS Jackson, MS
NWS Jackson, MS issued this tornado warning at Feb 9, 1999, 1:18 PM CST for Claiborne County, Jefferson County, Mississippi. It was in force for 32 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
- Feb 9, 1999, 1:18 PM CST (19:18 UTC)
- Expired
- Feb 9, 1999, 1:50 PM CST
- In force
- 32 min
- Issued by
- NWS Jackson, MS
- Area
- Whole counties
Counties Claiborne County, MS, Jefferson County, MS
The nearest sounding before it
Jackson, MS (KJAN), launched 12:00Z, 7.3 hours before the alert went out and 99 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
- 658 J/kg
- Mixed-layer CIN
- -105 J/kg
- Mixed-layer LCL
- 497 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 136 m²/s²
- 0-3 km storm-relative helicity
- 124 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.9
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KJAN 091917 RRA TORJAN MSC021-063-091950- BULLETIN- EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE JACKSON MS 118 PM CST TUE FEB 9 1999 THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A * TORNADO WARNING FOR... SOUTHEASTERN CLAIBORNE COUNTY IN SOUTHWESTERN MISSISSIPPI NORTHEASTERN JEFFERSON COUNTY IN SOUTHWESTERN MISSISSIPPI * UNTIL 150 PM CST * AT 118 PM CST... RADAR INDICATED A THUNDERSTORM CAPABLE OF PRODUCING A TORNADO ABOUT 6 MILES SOUTH OF PATTISON MOVING EAST AT 15 MPH. * THIS STORM WILL MOVE ALONG HIGHWAY 547 THROUGH 145 PM. IF YOU ARE IN A CAR...GO IN A NEARBY STURDY BUILDING! AS A LAST RESORT LIE FLAT IN A DITCH AND COVER YOUR HEAD. 66
What forecasters said that day
The local office's own words before this tornado 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, Feb 9, 9:49 AM CST, 3 hours 29 minutes before
ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074- 110400- AREA THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE JACKSON MS 1000 AM CST WED FEB 10 1999 A FRONTAL BOUNDARY JUST NORTH OF THE STATE WILL SLOWLY BEGIN MOVING NORTHWARD TODAY. INCREASING SOUTHERLY FLOW WILL PROVIDE WARM TEMPERATURES AND ABUNDANT MOISTURE OVER THE REGION. WARM AND MOIST CONDITIONS COMBINED WITH AN UNSTABLE AIRMASS WILL PRODUCE SHOWERS AND THUNDERSTORMS THROUGH EARLY EVENING. WHILE A FEW STRONG THUNDERSTORMS MAY DEVELOP...NO WIDESPREAD SEVERE WEATHER IS EXPECTED. ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS AND EMERGENCY MANAGEMENT/CIVIL DEFENSE PERSONNEL WILL NOT BE REQUIRED AT THIS TIME. HOWEVER...EMERGENCY PERSONNEL AND SPOTTERS SHOULD REMAIN ALERT FOR ANY RAPIDLY CHANGING WEATHER CONDITIONS. FOR MORE INFORMATION...PLEASE VISIT OUR INTERNET WEB SITE AT: HTTP://WWW.JANNWS.STATE.MS.US /IN LOWER CASE LETTERS/
Special weather statement, Feb 9, 9:50 AM CST, 3 hours 28 minutes before
ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074- 100400- AREA THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE JACKSON MS 950 AM CST TUE FEB 9 1999 WARM...MOIST AIR WILL CONTINUE TO SPREAD NORTH FROM THE GULF OF MEXICO TODAY AHEAD OF A WEAK FRONTAL BOUNDARY. DURING THE MORNING...SCATTERED SHOWERS WILL DEVELOP ACROSS THE FORECAST AREA WITH ISOLATED STRONG THUNDERSTORMS POSSIBLE. THE CHANCE OF SHOWERS AND THUNDERSTORMS WILL INCREASE DURING THE AFTERNOON. AN UPPER LEVEL DISTURBANCE IS EXPECTED TO MOVE ACROSS THE REGION DURING THE MAXIMUM HEATING OF THE DAY. WITH THIS DIURNAL HEATING...THE AIRMASS WILL BECOME MORE UNSTABLE...PARTICULARLY IN THE VICINITY OF THE SLOW-MOVING FRONTAL BOUNDARY. WHILE A FEW STRONG THUNDERSTORMS MAY DEVELOP...NO WIDESPREAD SEVERE WEATHER IS EXPECTED. ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS AND EMERGENCY MANAGEMENT/CIVIL DEFENSE PERSONNEL WILL NOT BE REQUIRED AT THIS TIME. HOWEVER...EMERGENCY PERSONNEL AND SPOTTERS SHOULD REMAIN ALERT FOR ANY RAPIDLY CHANGING WEATHER CONDITIONS. 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 |
|---|---|---|---|---|
| Feb 9, 1:32 PM CST | Tornado Warning | JAN | Copiah | 48 min |
| Feb 9, 2:15 PM CST | Tornado Warning | JAN | Lincoln | 50 min |
| Feb 9, 2:23 PM CST | Tornado Warning | JAN | Copiah | 32 min |
| Feb 9, 3:01 PM CST | Severe Thunderstorm Warning | JAN | Covington, Jones | 49 min |
| Feb 9, 3:05 PM CST | Tornado Warning | JAN | Lincoln | 35 min |
| Feb 9, 3:14 PM CST | Tornado Warning | JAN | Jefferson Davis | 46 min |
| Feb 9, 4:03 PM CST | Severe Thunderstorm Warning | JAN | Jefferson Davis, Lawrence | 47 min |
Nearby
Tornado Warnings in Mississippi, 1999Every tornado warning in 1999Tornadoes in 1999
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.