Alert archive / Mississippi / Flash Flood Warnings in 1991
Flash Flood Warning 9, NWS Jackson, MS
NWS Jackson, MS issued this flash flood warning at Feb 19, 1991, 6:56 AM CST for Issaquena County, Mississippi. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Feb 19, 1991, 6:56 AM CST (12:56 UTC)
- Expired
- Feb 19, 1991, 10:00 AM CST
- In force
- 3 hr
- Issued by
- NWS Jackson, MS
- Area
- Whole counties
County Issaquena County, MS
The nearest sounding before it
Jackson, MS (KJAN), launched 12:00Z, 0.9 hours before the alert went out and 97 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
- 211 J/kg
- Mixed-layer CIN
- -84 J/kg
- Mixed-layer LCL
- 663 m above ground
- 0-6 km bulk shear
- 65 kt
- 0-1 km storm-relative helicity
- 126 m²/s²
- 0-3 km storm-relative helicity
- 132 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 191307 FFWJAN MSC097-013-053-055-125-191600- BULLETIN - EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE JACKSON MS 656 AM CST TUE FEB 19 1991 THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 1000 AM CST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN CENTRAL MISSISSIPPI ...MONTGOMERY COUNTY IN NORTH CENTRAL MISSISSIPPI ...CALHOUN COUNTY IN WEST CENTRAL MISSISSIPPI ...HUMPHREYS COUNTY...ISSAQUENA COUNTY...SHARKEY COUNTY AT 700 AM CST WEATHER SERVICE RADAR INDICATED THUNDERSTORMS WITH HEAVY RAIN AROSS WEST CENTRAL MISSISSIPPI. SINCE THE GROUND IS ALREADY SATURATED...FLASH FLOODING WILL LIKELY OCCUR. IN ADDITION...THE CALHOUN COUNTY SHERIFF REPORTED MANY COUNTY ROADS UNDER WATER AND EVACUATIONS MAY HAVE TO BE DONE LATER THIS MORNING. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS BRIDGES OR LOW SPOTS IF WATER COVERS THE ROAD.6 NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT. <
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 19, 3:51 AM CST, 3 hours 5 minutes before
MSZ002-002 SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSON MS 345 AM CST TUE FEB 19 1991 AT 345AM...THUNDERSTORMS WITH VERY HEAVY RAINFALL WERE INDICATED OVER WEST CENTRAL MISSISSIPPI EXTENDING INTO SOUTHEAST ARKANSAS. THE STRONGEST THUNDERSTORMS WERE LOCATED IN THE VICINITY OF GREEVILLE AND GREENWOOD. A LARGE BAND OF MOSTLY LIGHT RAIN AND OTHER THUNDERSTORMS WERE OVER MOST OF NORHTWEST MISSISSIPPI. FLASH FLOOD WARNINGS ARE NOW BEING ISSUSED FOR SOME DELTA COUNTIES. ALONG WITH THE HEAVY RAIN...GUSTY WINDS AND LIGHTNING WILL LIKELY DEVELOP WITH THESE THUNDERSTORMS. BY LATER THIS MORNING THERE WILL BE A THREAT FOR SEVERE THUNDERSTORMS SO RESIDENTS SHOULD REMAIN ALERT FOR CHANGING CONDITIONS. ALSO A TORNADO WATCH HAS BEEN ISSUED FOR BOLIVAR...WASHINGTON... ISSAQUENA..JEFFERSON...WARREN...ADAMS...FRANKLIN...AND WILKINSON COUNTIES UNTIL 10 AM.
Special weather statement, Feb 19, 6:04 AM CST, 52 minutes before
MSZALL-ARZ014>016-LAZ002-003-004-006-009-010-013- ALZ004-008-013-016-191800- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSON MS 600 AM CST TUE FEB 19 1991 ...TORNADO WATCH #13 REMAINS IN EFFECT UNTIL 1000 AM THIS MORNING FOR A SMALL PORTION OF WEST AND SOUTHWEST MISSISSIPPI... AT 555 AM CST...A BAND OF MODERATE RAIN ALONG WITH SCATTERED EMBEDDED THUNDERSTORMS...SOME OF WHICH WERE PRODUCING VERY HEAVY RAINFALL CONTINUED TO MOVE ACROSS THE DELTA AND INTO NORTHEAST MISSISSIPPI. THIS BAND OF RAIN WAS PART OF THE LEADING EDGE OF PRECIPITATION ASSOCIATED WITH AN APPROACHING COLD FRONT. THIS COLD FRONT WILL MOVE SOUTHEAST INTO A INCREASINGLY UNSTABLE AIR MASS DURING THE DAY TODAY. THE HEAVIER RAINS AND THUNDERSTORMS WILL MOVE INTO CENTRAL AND SOUTH PORTIONS OF MISSISSIPPI LATER THIS MORNING AND INTO THE EVENING. ALONG WITH HEAVY RAINFALL AMOUNTS...THESE THUNDERSTORMS WILL LIKELY PRODUCE GUSTY SURFACE WINDS...FREQUENT LIGHTNING...AND POSSIBLY SMALL HAIL AS THEY MOVE THROUGH THE AREA. THE THREAT FOR SEVERE THUNDERSTORMS WILL CONTINUE FOR THE ENTIRE STATE THROUGH THE DAY TODAY AND INTO TONIGHT. THE COLD FRONT IS EXPECTED TO PUSH INTO THE NORTHWEST CORNER OF THE STATE THIS MORNING AND BE THROUGH TO THE MISSISSIPPI COAST BY WEDNESDAY AFTERNOON. AS THE FRONT PASSES THROUGH THE THREAT OF HEAVY RAINFALL AND SEVERE WEATHER WILL DIMINISH. COOLER AND DRIER AIR WILL FILTER INTO THE STATE BEHIND THE FRONT. HOWEVER..THE CHAoNCE FOR SOME LIGHT RAIN WILL CONTINUE INTO THURSDAY.
Special weather statement, Feb 19, 6:41 AM CST, 15 minutes before
MSZ003-008-002-191335- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE JACKSON MS 640 AM CST TUE FEB 19 1991 ...STRONG THUDERSTORMS MOVING INTO WEST CENTRAL MISSISSIPPI... AT 640 AM CST WEATHER SERVICE RADAR INDICATED STRONG THUNDERSTORMS MOVING INTO WEST CENTRAL MISSISSIPPI. THE STORMS WILL AFFECT THE VICKSBURG AREA BEFORE 7 AM. THE STORMS WILL PRODUCE HEAVY RAIN AND STRONG GUSTY WINDS. THE STORMS WERE MOVING TO THE EAST NORTHEAST AT 45 MPH. THE STORMS WILL SLO AFFECT PART SO ISSAQUENA...SHARKEY AND WASHINGTON COUNTIES BEFORE 730 AM CST. REMEMBER A TORNADO WATCH IS IN EFFECT TIL 10 AM CST FOR A SMALL SECTION OF WESTERN MISSISSIPPI. THIS WATCH DOES INCLUDE SUCH CITIES AS VICKSBURG ...NATCHEZ...AND GREENVILLE.
The office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 19, 4:48 AM CST | Flash Flood Warning | JAN | Bolivar, Sunflower, Washington | 4 hr |
| Feb 19, 4:48 AM CST | Flash Flood Warning | JAN | Carroll, Grenada, Leflore | 4 hr |
| Feb 19, 4:48 AM CST | Flash Flood Warning | JAN | Tallahatchie, Yalobusha | 4 hr |
| Feb 19, 6:56 AM CST | Flash Flood Warning | JAN | Calhoun | 3 hr |
| Feb 19, 6:56 AM CST | Flash Flood Warning | JAN | Montgomery | 3 hr |
| Feb 19, 6:56 AM CST | Flash Flood Warning | JAN | Humphreys, Sharkey | 3 hr |
| Feb 19, 7:25 AM CST | Severe Thunderstorm Warning | JAN | Yazoo | 20 min |
| Feb 19, 9:06 AM CST | Flash Flood Warning | JAN | Carroll, Grenada, Leflore | 7 hr |
| Feb 19, 9:06 AM CST | Flash Flood Warning | JAN | Bolivar, Sunflower, Tallahatchie, Washington | 7 hr |
| Feb 19, 9:06 AM CST | Flash Flood Warning | JAN | Yalobusha | 7 hr |
| Feb 19, 9:36 AM CST | Severe Thunderstorm Warning | JAN | Neshoba, Winston | 54 min |
| Feb 19, 10:46 AM CST | Severe Thunderstorm Warning | JAN | Smith | 44 min |
| Feb 19, 1:36 PM CST | Flash Flood Warning | JAN | Lauderdale, Newton | 4 hr |
| Feb 19, 4:28 PM CST | Flash Flood Warning | JAN | Leflore, Sunflower, Tallahatchie | 6 hr |
| Feb 19, 4:28 PM CST | Flash Flood Warning | JAN | Bolivar, Washington | 6 hr |
| Feb 19, 4:28 PM CST | Flash Flood Warning | JAN | Yalobusha | 6 hr |
| Feb 19, 4:52 PM CST | Severe Thunderstorm Warning | JAN | Lawrence | 53 min |
| Feb 19, 5:57 PM CST | Flash Flood Warning | JAN | Lauderdale | 7 hr |
| Feb 19, 5:57 PM CST | Flash Flood Warning | JAN | Noxubee | 7 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.