Alert archive / Mississippi / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 608, NWS Jackson, MS
NWS Jackson, MS issued this severe thunderstorm warning at Sep 8, 1999, 12:43 PM CDT for Claiborne County, Hinds County, Mississippi. It was in force for 32 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
- Sep 8, 1999, 12:43 PM CDT (17:43 UTC)
- Expired
- Sep 8, 1999, 1:15 PM CDT
- In force
- 32 min
- Issued by
- NWS Jackson, MS
- Area
- Whole counties
Counties Claiborne County, MS, Hinds County, MS
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 8, 1:00 PM CDT | Thunderstorm Wind | Utica, MS | Several trees were blown down. |
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 12:00Z, 5.7 hours before the alert went out and 60 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
- 1096 J/kg
- Mixed-layer CIN
- -86 J/kg
- Mixed-layer LCL
- 1020 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 10 m²/s²
- 0-3 km storm-relative helicity
- 4 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KJAN 081747 RRA SVRJAN MSC021-049-081815- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE JACKSON MS 1243 PM CDT WED SEP 8 1999 THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CLAIBORNE COUNTY IN SOUTHWESTERN MISSISSIPPI WESTERN HINDS COUNTY IN CENTRAL MISSISSIPPI * UNTIL 115 PM CDT * AT 1242 PM CDT... RADAR INDICATED A SEVERE THUNDERSTORM 35 MILES SOUTHWEST OF JACKSON OR 6 MILES SOUTHWEST OF UTICA... MOVING EAST AT 20 MPH. * THE FOLLOWING LOCATION IS IN THE PATH OF THIS STORM... UTICA AT 1255 PM CDT DAMAGING WINDS AND HEAVY RAIN ARE LIKELY. GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS! 72
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, Sep 8, 10:30 AM CDT, 2 hours 13 minutes before
ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074- 090400- AREA THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE JACKSON MS 1030 AM CDT WED SEP 8 1999 THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS SOUTHEAST ARKANSAS...NORTHEAST LOUISIANA AND WEST MISSISSIPPI TODAY. AN UPPER LEVEL DISTURBANCE WILL APPROACH THE AREA FROM THE WEST. THE AIRMASS OVER THE REGION IS VERY MOST AND UNSTABLE. AS A RESULT A FEW OF THE STORMS MAY BECOME SEVERE THROUGH THIS EVENING. THE MAIN THREAT FROM THESE STORMS WILL BE STRONG TO DAMAGING WINDS AND SOME HAIL. SCATTERED THUNDERSTORMS ARE ALSO EXPECTED ACROSS THE EASTERN HALF OF MISSISSIPPI TODAY...HEAVY RAINFALL AND GUSTY WINDS CAN BE EXPECTED WITH THOSE STORMS. STORM SPOTTERS...HAM RADIO OPERATORS...AND EMERGENCY MANAGEMENT PERSONNEL SHOULD STAY ALERT AS THIS SITUATION DEVELOPS. ACTIVATION MAY BE REQUIRED LATER THIS AFTERNOON INTO TONIGHT. FOR MORE INFORMATION...PLEASE VISIT OUR INTERNET WEB SITE AT: HTTP://WWW.JANNWS.STATE.MS.US
Special weather statement, Sep 8, 10:30 AM CDT, 2 hours 13 minutes before
ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074- 090400- AREA THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE JACKSON MS 1030 AM CDT WED SEP 8 1999 THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS SOUTHEAST ARKANSAS...NORTHEAST LOUISIANA AND WEST MISSISSIPPI TODAY. AN UPPER LEVEL DISTURBANCE WILL APPROACH THE AREA FROM THE WEST. THE AIRMASS OVER THE REGION IS VERY MOST AND UNSTABLE. AS A RESULT A FEW OF THE STORMS MAY BECOME SEVERE THROUGH THIS EVENING. THE MAIN THREAT FROM THESE STORMS WILL BE STRONG TO DAMAGING WINDS AND SOME HAIL. SCATTERED THUNDERSTORMS ARE ALSO EXPECTED ACROSS THE EASTERN HALF OF MISSISSIPPI TODAY...HEAVY RAINFALL AND GUSTY WINDS CAN BE EXPECTED WITH THOSE STORMS. STORM SPOTTERS...HAM RADIO OPERATORS...AND EMERGENCY MANAGEMENT PERSONNEL SHOULD STAY ALERT AS THIS SITUATION DEVELOPS. ACTIVATION MAY BE REQUIRED LATER THIS AFTERNOON INTO TONIGHT. FOR MORE INFORMATION...PLEASE VISIT OUR INTERNET WEB SITE AT: HTTP://WWW.JANNWS.STATE.MS.US
The office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 8, 12:48 PM CDT | Severe Thunderstorm Warning | JAN | Copiah | 32 min |
| Sep 8, 1:14 PM CDT | Severe Thunderstorm Warning | JAN | Hinds | 36 min |
| Sep 8, 1:25 PM CDT | Severe Thunderstorm Warning | JAN | Yazoo | 35 min |
| Sep 8, 1:57 PM CDT | Severe Thunderstorm Warning | JAN | Hinds | 33 min |
| Sep 8, 4:04 PM CDT | Severe Thunderstorm Warning | JAN | Kemper | 31 min |
| Sep 8, 4:13 PM CDT | Severe Thunderstorm Warning | JAN | Clarke | 32 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.