Alert archive / Mississippi / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 39, NWS Jackson, MS
NWS Jackson, MS issued this severe thunderstorm warning at Jan 17, 1999, 11:10 PM CST for Holmes County, Mississippi. It was in force for 45 min. 1 report 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 17, 1999, 11:10 PM CST (05:10 UTC)
- Expired
- Jan 17, 1999, 11:55 PM CST
- In force
- 45 min
- Issued by
- NWS Jackson, MS
- Area
- Whole counties
County Holmes County, MS
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jan 17, 11:30 PM CST | Hail 0.75 | Lexington, MS |
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
Jackson, MS (KJAN), launched 00:00Z, 5.2 hours before the alert went out and 89 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
- 1543 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 801 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 295 m²/s²
- 0-3 km storm-relative helicity
- 407 m²/s²
- Significant tornado parameter
- 3.2
- Supercell composite
- 11.9
The text
As transmitted, in the capitals the NWS used until 2016.
999 WUUS1 KJAN 180511 RRA SVRJAN MSC007-051-097-180555- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE JACKSON MS 1110 PM CST SUN JAN 17 1999 THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... ATTALA COUNTY IN CENTRAL MISSISSIPPI HOLMES COUNTY IN CENTRAL MISSISSIPPI MONTGOMERY COUNTY IN NORTH CENTRAL MISSISSIPPI * UNTIL 1155 PM CST * AT 1106 PM CST... RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS 5 MILES NORTHWEST OF WINONA TO JUST WEST OF TCHULA MOVING EAST AT 40 MPH. ANOTHER SEVERE THUNDERSTORM WAS DEVELOPING BETWEEN DURANT AND GOODMAN. * SOME LOCATIONS IN THE PATH OF THIS STORM INCLUDE... DURANT AT 1120 PM CST WINONA AT 1130 PM CST KILMICHAEL AT 1140 PM CST KOSCIUSKO AT 1150 PM CST DAMAGING WINDS AND LARGE HAIL ARE LIKELY. GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS 76 IF YOU ARE OUTDOORS...MOVE TO A PLACE OF SHELTER IMMEDIATELY IF A STORM APPROACHES. MOTORISTS SHOULD REMAIN ALERT FOR REDUCED VISIBILITIES DURING DOWNPOURS OF RAIN. STREETS MAY FLOOD QUICKLY.
The office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 17, 8:50 PM CST | Severe Thunderstorm Warning | JAN | Sunflower | 25 min |
| Jan 17, 9:45 PM CST | Severe Thunderstorm Warning | JAN | Leflore | 30 min |
| Jan 17, 9:50 PM CST | Severe Thunderstorm Warning | JAN | Sunflower | 45 min |
| Jan 17, 10:19 PM CST | Tornado Warning | JAN | Leflore | 41 min |
| Jan 17, 10:22 PM CST | Severe Thunderstorm Warning | JAN | Grenada | 48 min |
| Jan 17, 10:41 PM CST | Severe Thunderstorm Warning | JAN | Carroll | 49 min |
| Jan 17, 11:02 PM CST | Severe Thunderstorm Warning | JAN | Clay | 33 min |
| Jan 17, 11:10 PM CST | Severe Thunderstorm Warning | JAN | Attala, Montgomery | 45 min |
| Jan 17, 11:55 PM CST | Severe Thunderstorm Warning | JAN | Choctaw | 35 min |
| Jan 18, 12:37 AM CST | Severe Thunderstorm Warning | JAN | Winston | 33 min |
| Jan 18, 1:46 AM CST | Severe Thunderstorm Warning | JAN | Newton | 34 min |
| Jan 18, 1:53 AM CST | Severe Thunderstorm Warning | JAN | Lauderdale | 47 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.