Alert archive / Mississippi / Flash Flood Warnings in 1991
Flash Flood Warning 21, NWS Jackson, MS
NWS Jackson, MS issued this flash flood warning at Feb 22, 1991, 12:35 PM CST for Bolivar County, Sunflower County, Washington County, Mississippi. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Feb 22, 1991, 12:35 PM CST (18:35 UTC)
- Expired
- Feb 22, 1991, 4:30 PM CST
- In force
- 4 hr
- Issued by
- NWS Jackson, MS
- Area
- Whole counties
Counties Bolivar County, MS, Sunflower County, MS, Washington County, MS
The nearest sounding before it
Jackson, MS (KJAN), launched 12:00Z, 6.6 hours before the alert went out and 154 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
- NaN m above ground
- 0-6 km bulk shear
- 59 kt
- 0-1 km storm-relative helicity
- 112 m²/s²
- 0-3 km storm-relative helicity
- 134 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KJAN 221837 FFWJAN MSC011-133-151-222230- BULLETIN - EBS ACTIVATION REQUESTED FLOOD WARNING NATIONAL WEATHER SERVICE JACKSON MS 1235 PM CST FRI FEB 22 1991 THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A FLOOD WARNING EFFECTIVE UNTIL 430 PM CST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN NORTHWEST MISSISSIPPI ...BOLIVAR COUNTY...SUNFLOWER COUNTY...WASHINGTON COUNTY AT 1230PM CST RAIN AND THUNDERSTORMS CONTINUED TO INTENSIFY OVER THE DELTA WITH RAINFALL BECOMING HEAVIER. THIS LARGE RAIN AREA WAS MOVING SLOWLY EASTWARD AND SHOULD REMAIN OVER THESE COUNTIES FOR THE NEXT SEVERAL HOURS. ADDITIONAL FLOODING IS LIKELY THROUGH THIS AFTERNOON AND RESIDENTS ARE URGED TO MOVE TO HIGHER GROUND IMMEDIATELY. AS THIS RAIN SPREADS EASTWARD..MORE FLOOD WARNINGS MAY BE NEEDED IN THE NEXT FEW HOURS. A REPORT FROM LELAND INDCATES THAT ADDITIONAL FLOODING HAS BEGUN ESPECIALLY ALONG DEER CREEK WITH SOME DAMAGE TO BRIDGES. A FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS IMMINENT. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING. MOVE TO HIGHER GROUND. <
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, Feb 22, 9:51 AM CST, 2 hours 44 minutes before
MSZ006-008-009-012-013-014-221730- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSON MS 950 AM CST FRI FEB 22 1991 AT 945AM ISOLATED STRONG THUNDERSTORMS WERE DEVELOPING OVER CENTRAL AND SOUTHEAST MISSISSIPPI. THESE STORMS WERE LOCATED IN A WEDGE OF VERY UNSTABLE AIR OVER THE SOUTHEASTERN COUNTIES AND ADDITIONAL DEVELOPMENT IS LIKELY THROUGH THIS AFTERNOON. MOVEMENTS HAVE BEEN TOWARD THE NORTHEAST AT 35 MILES AN HOUR. THE STRONGEST STORMS WERE OVER SOUTHERN HOLMES COUNTY AND IN CENTRAL SMITH COUNTY AND MAY CONTAIN GUSTY WINDS...VERY HEAVY RAIN...SOME HAIL AND FREQUENT LIGHTNING. RESIDENTS IN THE LEXINGTON AND RALEIGH COMMUNITIES SHOULD KEEP ALERT FOR THE NEXT HOUR AS THESE STDORMS MOVE THROUGH AND BE READY TO TAKE SHELTER IF SEVERE WEATHER IS SIGHTED OR A WARNING IS ISSUED.
The office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 22, 11:14 AM CST | Tornado Warning | JAN | Attala | 26 min |
| Feb 22, 11:24 AM CST | Severe Thunderstorm Warning | JAN | Kemper | 36 min |
| Feb 22, 11:40 AM CST | Tornado Warning | JAN | Montgomery | 35 min |
| Feb 22, 2:39 PM CST | Severe Thunderstorm Warning | JAN | Neshoba | 51 min |
| Feb 22, 5:38 PM CST | Flash Flood Warning | JAN | Noxubee | 6 hr |
| Feb 22, 5:50 PM CST | Flash Flood Warning | JAN | Bolivar, Sunflower, Washington | 4 hr |
Nearby
Flash Flood Warnings in Mississippi, 1991Every flash flood warning in 1991
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.