Alert archive / Mississippi / Flash Flood Warnings in 1999
Flash Flood Warning 53, NWS Jackson, MS
NWS Jackson, MS issued this flash flood warning at May 29, 1999, 1:52 PM CDT for Washington 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
- May 29, 1999, 1:52 PM CDT (18:52 UTC)
- Expired
- May 29, 1999, 3:55 PM CDT
- In force
- 2 hr
- Issued by
- NWS Jackson, MS
- Area
- Whole counties
County Washington County, MS
The nearest sounding before it
Jackson, MS (KJAN), launched 12:00Z, 6.9 hours before the alert went out and 134 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
- 346 J/kg
- Mixed-layer CIN
- -108 J/kg
- Mixed-layer LCL
- 956 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 36 m²/s²
- 0-3 km storm-relative helicity
- 44 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 291854 FFWJAN MSC151-292055- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE JACKSON MS 152 PM CDT SAT MAY 29 1999 THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A * FLASH FLOOD WARNING FOR... NORTHERN WASHINGTON COUNTY IN NORTHWESTERN MISSISSIPPI * UNTIL 355 PM CDT * AT 150 PM CDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM WITH VERY HEAVY RAIN NEAR LELAND...MOVING VERY SLOWLY SOUTHEAST . * DOPPLAR RADAR INDICATES THAT OVER 2 INCHES OF RAIN PER HOUR HAVE FALLEN. WITH THE THUNDERSTORM MOVING VERY SLOWLY...FLOODING OF LOW LYING AREAS IS LIKELY. DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD! 80
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, May 29, 10:00 AM CDT, 3 hours 52 minutes before
ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074- 290400- AREA THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE JACKSON MS 1000 AM CDT SAT MAY 29 1999 WITH A STATIONARY BOUNDARY ALONG THE GULF COAST AND ISENTROPIC UPGLIDE BRINGING IN GULF MOISTURE...SHOWERS AND THUNDERSTORMS ARE LIKELY ACROSS THE AREA. HOWEVER...WITH LIMITED INSTABILITY AND SHEAR...ORGANIZED SEVERE THUNDERSTORM ACTIVITY IS NOT EXPECTEDXNTO TONIGHT. ANY STORMS WHICH DO BECOME SEVERE WILL BE OF THE PULSE TYPE WITH LOCALIZED HAIL AND DAMAGING WINDS. ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS...AND EMERGENCY MANAGEMENT PERSONNEL WILL NOT BE NEEDED THROUGH TONIGHT. FOR MORE INFORMATION...PLEASE VISIT OUR INTERNET WEB SITE AT: HTTP://WWW.JANNWS.STATE.MS.US
Special weather statement, May 29, 10:00 AM CDT, 3 hours 52 minutes before
ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074- 290400- AREA THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE JACKSON MS 1000 AM CDT SAT MAY 29 1999 WITH A STATIONARY BOUNDARY ALONG THE GULF COAST AND ISENTROPIC UPGLIDE BRINGING IN GULF MOISTURE...SHOWERS AND THUNDERSTORMS ARE LIKELY ACROSS THE AREA. HOWEVER...WITH LIMITED INSTABILITY AND SHEAR...ORGANIZED SEVERE THUNDERSTORM ACTIVITY IS NOT EXPECTEDXNTO TONIGHT. ANY STORMS WHICH DO BECOME SEVERE WILL BE OF THE PULSE TYPE WITH LOCALIZED HAIL AND DAMAGING WINDS. ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS...AND EMERGENCY MANAGEMENT PERSONNEL WILL NOT BE NEEDED THROUGH 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 |
|---|---|---|---|---|
| May 28, 7:05 PM CDT | Severe Thunderstorm Warning | JAN | Jones | 35 min |
| May 28, 7:41 PM CDT | Severe Thunderstorm Warning | JAN | Jasper, Jones | 49 min |
| May 28, 8:08 PM CDT | Severe Thunderstorm Warning | JAN | Covington | 47 min |
| May 28, 8:13 PM CDT | Severe Thunderstorm Warning | JAN | Clarke | 62 min |
| May 28, 8:20 PM CDT | Severe Thunderstorm Warning | JAN | Smith | 50 min |
| May 28, 9:53 PM CDT | Severe Thunderstorm Warning | JAN | Jefferson Davis, Lamar | 47 min |
| May 29, 2:39 PM CDT | Severe Thunderstorm Warning | JAN | Copiah | 31 min |
| May 29, 4:26 PM CDT | Severe Thunderstorm Warning | JAN | Yazoo | 49 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.