Alert archive / Louisiana / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 413, NWS Jackson, MS
NWS Jackson, MS issued this severe thunderstorm warning at May 5, 1999, 8:22 PM CDT for Franklin Parish, Louisiana. It was in force for 48 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 5, 1999, 8:22 PM CDT (01:22 UTC)
- Expired
- May 5, 1999, 9:10 PM CDT
- In force
- 48 min
- Issued by
- NWS Jackson, MS
- Area
- Whole counties
County Franklin Parish, LA
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, 2:45 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Jackson, MS (KJAN), launched 00:00Z, 1.4 hours before the alert went out and 151 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
- 3704 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 839 m above ground
- 0-6 km bulk shear
- 66 kt
- 0-1 km storm-relative helicity
- 247 m²/s²
- 0-3 km storm-relative helicity
- 293 m²/s²
- Significant tornado parameter
- 7.4
- Supercell composite
- 23.8
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 5, 3:15 PM CDT, 5 hours 7 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/
Local storm report, May 5, 7:50 PM CDT, 32 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
750 PM CDT WED MAY 05 1999
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....PARISH/COUNTY LOCATION....
0550 PM WAYSIDE MS 1 INCH HAIL
05/05/99 WASHINGTON REPORTED BY EOC.
0602 PM LELAND MS .75 INCH HAIL
05/05/99 WASHINGTON ON HIGHWAY 82 BETWEEN
LELAND AND GREENVILLE.
REPORTED BY MHP.
0605 PM CLEVELAND MS 60 MPH TSTM GUST
05/05/99 BOLIVAR REPORTED BY EOC.
0620 PM LELAND MS .88 INCH HAIL
05/05/99 WASHINGTON REPORTED BY P.D.
.
0630 PM 7 S RAYVILLE LA 1.75 INCH HAIL
05/05/99 RICHLAND REPORTED BY S.O.
0639 PM ANGUILLA MS .75 INCH HAIL
05/05/99 SHARKEY REPORTED BY HAM RADIO
OPERATOR.
0700 PM YAZOO CITY MS TORNADO
05/05/99 YAZOO REPORTED BY P.D.The office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 5, 7:06 PM CDT | Tornado Warning | JAN | Holmes | 49 min |
| May 5, 7:15 PM CDT | Tornado Warning | JAN | Carroll, Leflore | 50 min |
| May 5, 7:21 PM CDT | Severe Thunderstorm Warning | JAN | Grenada | 49 min |
| May 5, 7:31 PM CDT | Tornado Warning | JAN | Humphreys | 49 min |
| May 5, 7:37 PM CDT | Tornado Warning | JAN | Grenada, Montgomery | 48 min |
| May 5, 7:47 PM CDT | Tornado Warning | JAN | Attala | 48 min |
| May 5, 7:49 PM CDT | Severe Thunderstorm Warning | JAN | Yazoo | 51 min |
| May 5, 8:00 PM CDT | Severe Thunderstorm Warning | JAN | Holmes | 50 min |
| May 5, 8:02 PM CDT | Severe Thunderstorm Warning | JAN | Carroll | 48 min |
| May 5, 8:05 PM CDT | Severe Thunderstorm Warning | JAN | Sharkey | 50 min |
| May 5, 8:21 PM CDT | Severe Thunderstorm Warning | JAN | Choctaw, Montgomery, Webster | 49 min |
| May 5, 8:41 PM CDT | Severe Thunderstorm Warning | JAN | Clay, Oktibbeha | 49 min |
| May 5, 8:46 PM CDT | Severe Thunderstorm Warning | JAN | Humphreys | 49 min |
| May 5, 8:51 PM CDT | Flash Flood Warning | JAN | Carroll, Holmes, Humphreys | 119 min |
| May 5, 8:51 PM CDT | Flash Flood Warning | JAN | Issaquena | 119 min |
| May 5, 8:51 PM CDT | Flash Flood Warning | JAN | Sharkey | 119 min |
| May 5, 8:51 PM CDT | Flash Flood Warning | JAN | Montgomery | 119 min |
| May 5, 8:52 PM CDT | Severe Thunderstorm Warning | JAN | Issaquena | 48 min |
| May 5, 9:00 PM CDT | Severe Thunderstorm Warning | JAN | Carroll, Holmes | 50 min |
| May 5, 9:07 PM CDT | Severe Thunderstorm Warning | JAN | Sharkey | 48 min |
| May 5, 9:10 PM CDT | Severe Thunderstorm Warning | JAN | Montgomery | 50 min |
| May 5, 9:27 PM CDT | Severe Thunderstorm Warning | JAN | Clay, Lowndes | 48 min |
| May 5, 9:34 PM CDT | Severe Thunderstorm Warning | JAN | Humphreys, Yazoo | 46 min |
| May 5, 9:46 PM CDT | Severe Thunderstorm Warning | JAN | Holmes | 49 min |
| May 5, 10:32 PM CDT | Severe Thunderstorm Warning | JAN | Attala, Holmes, Yazoo | 48 min |
| May 5, 10:37 PM CDT | Severe Thunderstorm Warning | JAN | Madison | 48 min |
| May 5, 10:46 PM CDT | Severe Thunderstorm Warning | JAN | Hinds | 49 min |
| May 5, 11:12 PM CDT | Severe Thunderstorm Warning | JAN | Oktibbeha | 48 min |
| May 5, 11:15 PM CDT | Severe Thunderstorm Warning | JAN | Leake, Scott | 50 min |
| May 5, 11:15 PM CDT | Severe Thunderstorm Warning | JAN | Rankin | 50 min |
| May 5, 11:16 PM CDT | Severe Thunderstorm Warning | JAN | Lowndes | 49 min |
| May 6, 12:01 AM CDT | Severe Thunderstorm Warning | JAN | Neshoba | 49 min |
| May 6, 12:14 AM CDT | Severe Thunderstorm Warning | JAN | Rankin, Simpson | 51 min |
| May 6, 12:19 AM CDT | Severe Thunderstorm Warning | JAN | Copiah | 51 min |
| May 6, 12:25 AM CDT | Severe Thunderstorm Warning | JAN | Hinds | 35 min |
| May 6, 12:26 AM CDT | Severe Thunderstorm Warning | JAN | Noxubee | 49 min |
| May 6, 12:28 AM CDT | Severe Thunderstorm Warning | JAN | Scott | 47 min |
| May 6, 12:35 AM CDT | Severe Thunderstorm Warning | JAN | Newton | 50 min |
| May 6, 12:47 AM CDT | Severe Thunderstorm Warning | JAN | Kemper, Neshoba | 48 min |
| May 6, 1:26 AM CDT | Severe Thunderstorm Warning | JAN | Lauderdale | 44 min |
| May 6, 3:02 AM CDT | Severe Thunderstorm Warning | JAN | Jefferson Davis | 43 min |
| May 6, 4:18 AM CDT | Severe Thunderstorm Warning | JAN | Clarke | 47 min |
| May 5, 7:43 PM CDT | Severe Thunderstorm Warning | JAN | East Carroll, West Carroll | 47 min |
| May 5, 7:45 PM CDT | Severe Thunderstorm Warning | JAN | Richland | 50 min |
| May 5, 8:35 PM CDT | Severe Thunderstorm Warning | JAN | East Carroll, Madison | 50 min |
| May 5, 8:35 PM CDT | Severe Thunderstorm Warning | JAN | West Carroll | 50 min |
| May 5, 9:05 PM CDT | Severe Thunderstorm Warning | JAN | Franklin | 50 min |
Nearby
Severe Thunderstorm Warnings in Louisiana, 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; the sounding from the Mesonet's radiosonde archive.