Alert archive / Mississippi / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 44, NWS Jackson, MS
NWS Jackson, MS issued this severe thunderstorm warning at Jan 21, 1999, 2:34 PM CST for Bolivar County, Mississippi. It was in force for 46 min. 2 reports 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
- Jan 21, 1999, 2:34 PM CST (20:34 UTC)
- Expired
- Jan 21, 1999, 3:20 PM CST
- In force
- 46 min
- Issued by
- NWS Jackson, MS
- Area
- Whole counties
County Bolivar County, MS
The radar
The Little Rock radar (KLZK), 172 km from the middle of the area, began a volume at 20:35 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jan 21, 3:10 PM CST | Tornado F1 | Malvina, MS | Two mobile homes were destroyed and several other houses had minor damage. |
| Jan 21, 3:16 PM CST | Tornado F1 | Cleveland, MS | One mobile home was over-turned and a roof was torn off of a shop. A tractor was also flipped over. |
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
Little Rock, AR (KLZK), launched 12:00Z, 8.6 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
- 701 J/kg
- Mixed-layer CIN
- -198 J/kg
- Mixed-layer LCL
- 594 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 258 m²/s²
- 0-3 km storm-relative helicity
- 227 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
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, Jan 21, 9:45 AM CST, 4 hours 49 minutes before
ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074- 220600- AREA THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE JACKSON MS 945 AM CST THU JAN 21 1999 ...SIGNIFICANT OUTBREAK OF SEVERE THUNDERSTORMS STARTING TONIGHT... AN APPROACHING UPPER LEVEL DISTURBANCE WILL COMBINE WITH INCREASING JET STREAM ENERGY AND ABUNDANT MOISTURE ALREADY IN PLACE TO TRIGGER AN OUTBREAK OF SIGNIFICANT SEVERE WEATHER STARTING TONIGHT. IN THE HEAT OF THE LATE AFTERNOON...SCATTERED THUNDERSTORMS WILL DEVELOP OVER PORTIONS OF SOUTHEAST ARKANSAS...NORTHEAST LOUISIANA BEFORE SPREADING INTO NORTHWEST MISSISSIPPI EARLY TONIGHT. THESE STORMS COULD RAPIDLY REACH SEVERE LIMITS AS THEY RACE NORTHEASTWARD AT SPEEDS OF 50 MPH OR GREATER. THE RAPID MOVEMENT OF THE STORMS WILL MEAN EXTREMELY HIGH WINDS WILL BE POSSIBLE ALONG WITH VERY LARGE HAIL. AS LOW LEVEL WINDS STRENGTHEN TONIGHT...CONDITIONS WILL BE FAVORABLE FOR TORNADO FORMATION...INCLUDING ISOLATED VERY DAMAGING TORNADOES. WHEN WARNINGS ARE ISSUED...THE NATIONAL WEATHER SERVICE STRONGLY RECOMMENDS THAT IMMEDITATE SAFETY ACTIONS BE TAKEN...YOUR LIFE MAY DEPEND ON IT. INITIALLY...MOST OF THE SEVERE WEATHER SHOULD REMAIN NORTHWEST OF A COLUMBUS TO JACKSON TO NATCHEZ MISSISSIPPI LINE TONIGHT. SEVERE WEATHER COULD ALSO IMPACT MUCH OF THE AREA ON FRIDAY. ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS AND EMERGENCY MANAGEMENT/CIVIL DEFENSE PERSONNEL WILL LIKELY BE REQUIRED BY TONIGHT. FOR MORE INFORMATION...PLEASE VISIT OUR INTERNET WEB SITE AT: HTTP://WWW.JANNWS.STATE.MS.US /IN LOWER CASE LETTERS/
Special weather statement, Jan 21, 10:30 AM CST, 4 hours 4 minutes before
ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074- 230400- AREA THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE JACKSON MS 1030 AM CST THU JAN 21 1999 ...SIGNIFICANT OUTBREAK OF SEVERE THUNDERSTORMS THROUGH TONIGHT... A PASSING UPPER LEVEL DISTURBANCE WILL COMBINE WITH ABUNDANT JET STREAM ENERGY AND ABUNDANT MOISTURE ALREADY IN PLACE TO TRIGGER AN OUTBREAK OF SIGNIFICANT SEVERE WEATHER TODAY INTO TONIGHT. A LINE OF STRONG STORMS WILL BE PASSING THROUGH THE STATE TODAY INTO TONIGHT. THE LINE OF STORMS WILL BE MOVING EAST AT 25 MPH WITH INDIVIDUAL STORMS MOVING NORTHEAST AT 45 MPH. THESE STORMS CAN RAPIDLY REACH SEVERE LIMITS AS THEY RACE NORTHEASTWARD. THE RAPID MOVEMENT OF THE STORMS WILL MEAN EXTREMELY HIGH WINDS WILL BE POSSIBLE ALONG WITH VERY LARGE HAIL. WITH STRONG...LOW LEVEL WINDS...CONDITIONS WILL BE FAVORABLE FOR TORNADO FORMATION...INCLUDING ISOLATED VERY DAMAGING TORNADOES. WHEN WARNINGS ARE ISSUED...THE NATIONAL WEATHER SERVICE STRONGLY RECOMMENDS THAT IMMEDIATE SAFETY ACTIONS BE TAKEN...YOUR LIFE MAY DEPEND ON IT. AS THE COLD FRONT PASSES THROUGH THE STATE TONIGHT INTO EARLY SATURDAY...COOLER MORE STABLE AIR WILL PREVENT THE FORMATION OF THUNDERSTORMS SATURDAY. ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS AND EMERGENCY MANAGEMENT/CIVIL DEFENSE PERSONNEL WILL BE REQUIRED 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 |
|---|---|---|---|---|
| Jan 21, 3:07 PM CST | Tornado Warning | JAN | Bolivar | 33 min |
| Jan 21, 4:17 PM CST | Tornado Warning | JAN | Bolivar | 48 min |
| Jan 21, 5:04 PM CST | Severe Thunderstorm Warning | JAN | Bolivar | 31 min |
| Jan 21, 3:50 PM CST | Severe Thunderstorm Warning | JAN | Ashley, Chicot | 50 min |
| Jan 21, 3:59 PM CST | Tornado Warning | JAN | Chicot | 31 min |
Nearby
Severe Thunderstorm Warnings in Mississippi, 1999Every severe thunderstorm warning 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.