Alert archive / Mississippi / Flash Flood Warnings in 1999
Flash Flood Warning 45, NWS Jackson, MS
NWS Jackson, MS issued this flash flood warning at Mar 13, 1999, 2:40 PM CST for Clarke County, Mississippi. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Mar 13, 1999, 2:40 PM CST (20:40 UTC)
- Expired
- Mar 13, 1999, 4:45 PM CST
- In force
- 2 hr
- Issued by
- NWS Jackson, MS
- Area
- Whole counties
County Clarke County, MS
The nearest sounding before it
Jackson, MS (KJAN), launched 12:00Z, 8.7 hours before the alert went out and 135 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 510 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- 491 m²/s²
- 0-3 km storm-relative helicity
- 557 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KJAN 132041 FFWJAN MSC023-132245- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE JACKSON MS 240 PM CST SAT MAR 13 1999 THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A * FLASH FLOOD WARNING FOR... CLARKE COUNTY IN EAST CENTRAL MISSISSIPPI * UNTIL 445 PM CST * AT 240 PM RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAIN FROM QUITMAN TO HATTIESBURG MOVING NORTHEAST AT 35 MPH. THESE STORMS WILL PRODUCE TWO TO FOUR INCHES OF RAIN OVER PARTS OF CLARKE COUNTY THROUGH 445 PM...WHICH WILL LIKELY RESULT IN FLOODING OF ROADS AND LOW AREAS. DON'T DRIVE ACROSS FLOODED ROADS! MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. 64
What forecasters said that day
The local office's own words before this flash flood 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, Mar 13, 10:35 AM CST, 4 hours 5 minutes before
ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074- 140400- AREA THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE JACKSON MS 1035 AM CST SAT MAR 13 1999 ...TORNADO WATCH IN EFFECT FOR MUCH OF SOUTH MISSISSIPPI UNTIL 400 PM... A LOW PRESSURE SYSTEM IN CENTRAL LOUISIANA WILL MOVE NORTHEAST AT 20 MPH AND TRIGGER SCATTERED TO NUMEROUS THUNDERSTORMS OVER CENTRAL AND SOUTH PORTIONS OF THE AREA. A FEW OF THE STORMS MAY BE SEVERE MAINLY SOUTHEAST OF A MERIDIAN TO BROOKHAVEN LINE THROUGH EARLY EVENING WITH POTENTIAL LARGE HAIL AND DAMAGING WINDS. AN ISOLATED TORNADO IS ALSO POSSIBLE IN SOUTHEAST PORTIONS. LOCALLY HEAVY RAINS MAY PRODUCE FLOODING DURING THE AFTERNOON HOURS. A COLD FRONT SHOULD SWEEP THROUGH THE REGION TONIGHT PUSHING ALL OF THE THUNDERSTORMS OFF TO THE EAST BEFORE MIDNIGHT. ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS AND EMERGENCY MANAGEMENT/CIVIL DEFENSE PERSONNEL WILL BE NEEDED THIS AFTERNOON THROUGH EARLY TONIGHT. FOR MORE INFORMATION...PLEASE VISIT OUR INTERNET WEBSITE AT: HTTP://WWW.JANNWS.STATE.MS.US
Special weather statement, Mar 13, 10:35 AM CST, 4 hours 5 minutes before
ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074- 140400- AREA THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE JACKSON MS 1035 AM CST SAT MAR 13 1999 ...TORNADO WATCH IN EFFECT FOR MUCH OF SOUTH MISSISSIPPI UNTIL 400 PM... A LOW PRESSURE SYSTEM IN CENTRAL LOUISIANA WILL MOVE NORTHEAST AT 20 MPH AND TRIGGER SCATTERED TO NUMEROUS THUNDERSTORMS OVER CENTRAL AND SOUTH PORTIONS OF THE AREA. A FEW OF THE STORMS MAY BE SEVERE MAINLY SOUTHEAST OF A MERIDIAN TO BROOKHAVEN LINE THROUGH EARLY EVENING WITH POTENTIAL LARGE HAIL AND DAMAGING WINDS. AN ISOLATED TORNADO IS ALSO POSSIBLE IN SOUTHEAST PORTIONS. LOCALLY HEAVY RAINS MAY PRODUCE FLOODING DURING THE AFTERNOON HOURS. A COLD FRONT SHOULD SWEEP THROUGH THE REGION TONIGHT PUSHING ALL OF THE THUNDERSTORMS OFF TO THE EAST BEFORE MIDNIGHT. ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS AND EMERGENCY MANAGEMENT/CIVIL DEFENSE PERSONNEL WILL BE NEEDED THIS AFTERNOON THROUGH EARLY TONIGHT. FOR MORE INFORMATION...PLEASE VISIT OUR INTERNET WEBSITE 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 |
|---|---|---|---|---|
| Mar 13, 7:11 AM CST | Severe Thunderstorm Warning | JAN | Adams, Jefferson | 49 min |
| Mar 13, 7:39 AM CST | Severe Thunderstorm Warning | JAN | Franklin | 46 min |
| Mar 13, 7:58 AM CST | Severe Thunderstorm Warning | JAN | Jefferson | 32 min |
| Mar 13, 8:17 AM CST | Severe Thunderstorm Warning | JAN | Copiah | 48 min |
| Mar 13, 8:42 AM CST | Severe Thunderstorm Warning | JAN | Hinds | 48 min |
| Mar 13, 8:54 AM CST | Severe Thunderstorm Warning | JAN | Rankin, Simpson | 46 min |
| Mar 13, 9:33 AM CST | Severe Thunderstorm Warning | JAN | Scott, Smith | 47 min |
| Mar 13, 11:45 AM CST | Severe Thunderstorm Warning | JAN | Marion | 50 min |
| Mar 13, 12:20 PM CST | Severe Thunderstorm Warning | JAN | Lamar | 50 min |
| Mar 13, 1:30 PM CST | Flash Flood Warning | JAN | Lamar, Marion | 2 hr |
| Mar 13, 1:30 PM CST | Flash Flood Warning | JAN | Forrest | 2 hr |
| Mar 13, 2:01 PM CST | Flash Flood Warning | JAN | Jones | 119 min |
| Mar 13, 3:26 PM CST | Flash Flood Warning | JAN | Forrest, Lamar | 2 hr |
| Mar 13, 3:26 PM CST | Flash Flood Warning | JAN | Marion | 2 hr |
| Mar 13, 3:55 PM CST | Flash Flood Warning | JAN | Jones | 95 min |
Nearby
Flash Flood Warnings in Mississippi, 1999Every flash flood 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.