Alert archive / Mississippi / Tornado Warnings in 1999
Tornado Warning 133, NWS Jackson, MS
NWS Jackson, MS issued this tornado warning at May 5, 1999, 6:26 PM CDT for Leflore County, Mississippi. It was in force for 49 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
- May 5, 1999, 6:26 PM CDT (23:26 UTC)
- Expired
- May 5, 1999, 7:15 PM CDT
- In force
- 49 min
- Issued by
- NWS Jackson, MS
- Area
- Whole counties
County Leflore County, MS
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 5, 6:30 PM CDT | Hail 0.75 | Countywide, MS | |
| May 5, 7:20 PM CDT | Tornado F1 | Greenwood, MS | This short-lived weak tornado blew a couple of mobile homes 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 5, 5:00 PM CDT | Tornado Watch | SPC | 4 hr |
The nearest sounding before it
Jackson, MS (KJAN), launched 12:00Z, 11.4 hours before the alert went out and 138 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
- 2115 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 554 m above ground
- 0-6 km bulk shear
- 67 kt
- 0-1 km storm-relative helicity
- 291 m²/s²
- 0-3 km storm-relative helicity
- 224 m²/s²
- Significant tornado parameter
- 3.8
- Supercell composite
- 12.7
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KJAN 052328 RRA TORJAN MSC083-060015- BULLETIN- EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE JACKSON MS 626 PM CDT WED MAY 5 1999 THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A * TORNADO WARNING FOR... LEFLORE COUNTY IN NORTH CENTRAL MISSISSIPPI * UNTIL 715 PM CDT * AT 625 PM CDT... RADAR INDICATED A TORNADO 16 MILES WEST OF GREENWOOD OR 9 MILES NORTHWEST OF ITTA BENA... MOVING NORTHEAST AT 45 MPH. THIS STORM WILL MAINLY AFFEBCT SMALLER COMMUNITIES AND RURAL AREAS. ABANDON MOBILE HOMES! GO IN A NEARBY STURDY BUILDING. AS A LAST RESORT LIE FLAT IN A DITCH AND COVER YOUR HEAD. 74
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, May 5, 3:15 PM CDT, 3 hours 11 minutes before
ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074- 060800- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSON MS 315 PM CDT WED MAY 5 1999 ...SIGNIFICANT OUTBREAK OF SEVERE WEATHER LIKELY ACROSS THE REGION LATER THIS AFTERNOON AND TONIGHT... ...FLOODING ALSO POSSIBLE...ESPECIALLY OVER NORTH MISSISSIPPI AND SOUTHEAST ARKANSAS... A HIGH RISK OF SEVERE THUNDERSTORMS EXISTS THIS AFTERNOON INTO TONIGHT OVER SOUTHEAST ARKANSAS...NORTHEAST LOUISIANA...AND MOST OF MISSISSIPPI. SEVERE THUNDERSTORMS WERE RAPIDLY DEVELOPING THIS AFTERNOON OVER EASTERN AND SOUTHERN ARKANSAS...NORTHWEST LOUISIANA...AND NORTHEAST TEXAS AHEAD OF A COLD FRONT. THE AIRMASS ACROSS THE LOWER MISSISSIPPI VALLEY AHEAD OF THIS COLD FRONT IS EXTREMELY UNSTABLE. THE COMBINATION OF THE FRONT... THE VERY UNSTABLE AIR...AND FAVORABLE WINDS ALOFT IN THE ATMOSPHERE WILL LIKELY SET THE STAGE FOR A WIDESPREAD OUTBREAK OF SEVERE THUNDERSTORMS ACROSS THE REGION LATE THIS AFTERNOON AND TONIGHT. STRONG TO SEVERE THUNDERSTORMS WILL LIKELY BEGIN TO MOVE INTO NORTHEAST LOUISIANA...SOUTHEAST ARKANSAS...AND NORTHWEST MISSISSIPPI BY LATE AFTERNOON. A TORNADO WATCH IS ALREADY IN EFFECT FOR THESE AREAS UNTIL 9 PM TONIGHT. THE THREAT OF SEVERE WEATHER WILL THEN SHIFT EAST ACROSS THE REMAINDER OF MISSISSIPPI OVERNIGHT. DAMAGING WINDS... VERY LARGE HAIL...AND A FEW STRONG TORNADOES MAY OCCUR WITH THESE STORMS. IN ADDITION TO THE THREAT OF SEVERE WEATHER...HEAVY RAINFALL WILL ACCOMPANY THE STORMS. THE GREATEST RISK OF EXCESSIVE RAINFALL TOTALS IS OVER NORTHERN MISSISSIPPI AND SOUTHEAST ARKANSAS WHERE SEVERAL ROUNDS OF THUNDERSTORMS MAY MOVE ACROSS THE SAME AREA. A FLASH FLOOD WATCH HAS BEEN ISSUED FOR THIS AREA ALONG AND NORTH OF U.S. HIGHWAY 82. THIS IS A POTENTIALLY DANGEROUS WEATHER SITUATION. PEOPLE IN THE REGION SHOULD MONITOR WEATHER DEVELOPMENTS CLOSELY...AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WATCHES AND WARNINGS. ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS...AND EMERGENCY MANAGEMENT PERSONNEL IS LIKELY THIS AFTERNOON INTO 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 |
|---|---|---|---|---|
| May 5, 1:45 AM CDT | Severe Thunderstorm Warning | JAN | Issaquena, Warren | 35 min |
| May 5, 8:43 AM CDT | Severe Thunderstorm Warning | JAN | Washington | 32 min |
| May 5, 9:11 AM CDT | Severe Thunderstorm Warning | JAN | Bolivar, Sunflower | 49 min |
| May 5, 4:28 PM CDT | Severe Thunderstorm Warning | JAN | Sunflower | 32 min |
| May 5, 4:42 PM CDT | Severe Thunderstorm Warning | JAN | Leflore | 48 min |
| May 5, 5:35 PM CDT | Severe Thunderstorm Warning | JAN | Bolivar | 50 min |
| May 5, 5:36 PM CDT | Severe Thunderstorm Warning | JAN | Washington | 49 min |
| May 5, 6:03 PM CDT | Severe Thunderstorm Warning | JAN | Issaquena | 47 min |
| May 5, 6:07 PM CDT | Severe Thunderstorm Warning | JAN | Sunflower | 48 min |
| May 5, 6:15 PM CDT | Tornado Warning | JAN | Issaquena | 50 min |
| May 5, 6:17 PM CDT | Severe Thunderstorm Warning | JAN | Leflore | 48 min |
| May 5, 6:20 PM CDT | Tornado Warning | JAN | Sharkey | 50 min |
| May 5, 6:22 PM CDT | Severe Thunderstorm Warning | JAN | Washington | 33 min |
| May 5, 6:30 PM CDT | Tornado Warning | JAN | Sunflower | 50 min |
| May 5, 6:33 PM CDT | Severe Thunderstorm Warning | JAN | Yazoo | 52 min |
| May 5, 6:39 PM CDT | Tornado Warning | JAN | Humphreys | 51 min |
| May 5, 6:47 PM CDT | Tornado Warning | JAN | Yazoo | 48 min |
| May 5, 6:58 PM CDT | Severe Thunderstorm Warning | JAN | Holmes | 47 min |
| May 5, 6:59 PM CDT | Severe Thunderstorm Warning | JAN | Issaquena, Sharkey | 51 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.