Alert archive / Mississippi / Flash Flood Warnings in 1990
Flash Flood Warning 23, NWS Jackson, MS
NWS Jackson, MS issued this flash flood warning at May 12, 1990, 9:58 PM CDT for 6 counties in Mississippi. It was in force for 2 hr.
The area
The counties it named.
The facts
- Issued
- May 12, 1990, 9:58 PM CDT (02:58 UTC)
- Expired
- May 13, 1990, 12:00 AM CDT
- In force
- 2 hr
- Issued by
- NWS Jackson, MS
- Area
- Whole counties
Counties Copiah County, MS, Covington County, MS, Jefferson Davis County, MS, Lawrence County, MS, Simpson County, MS, Smith County, MS
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Jackson, MS (KJAN), launched 00:00Z, 3.0 hours before the alert went out and 65 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
- 1 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 711 m above ground
- 0-6 km bulk shear
- 73 kt
- 0-1 km storm-relative helicity
- 60 m²/s²
- 0-3 km storm-relative helicity
- 149 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 130300 FFWJAN MSC029-127-129-031-065-077-037-063-085-130500- BULLETIN - EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE JACKSON MS 958 PM CDT SAT MAY 12 1990 THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL MIDNIGHT CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN CENTRAL MISSISSIPPI ...COPIAH COUNTY...SIMPSON COUNTY...SMITH COUNTY IN SOUTH CENTRAL MISSISSIPPI ...COVINGTON COUNTY...JEFFERSON.DAVIS COUNTY...LAWRENCE COUNTY IN SOUTHWEST MISSISSIPPI ...FRANKLIN COUNTY...JEFFERSON COUNTY...LINCOLN COUNTY AT 955 PM CDT...A MASSIVE AREA OF HEAVY RAINFALL AND EMBEDDED THUNDERSTORMS WAS DRIFTING SOUTHEASTWARD INTO SOUTH-CENTRAL MISSISSIPPI. FLASH FLOODING HAS BEEN RECENTLY BEEN REPORTED IN LINCOLN AND JEFFERSON...DAVIS COUNTIES. MORE FLASH FLOODING IS LIKELY AS THIS LARGE AREA OF HEAVY RAINFALL MOVES SOUTHEASTWARD. ADDITIONAL RAINFALL AMOUNTS OF 1 TO 3 INCHES IS POSSIBLE BY MIDNIGHT. THE AREA OF HEAVY RAINFALL WAS ABOUT 30 MILES WIDE EXTENDING FROM FAYETTE TO MAGEE. AT NIGHT BE ESPECIALLY CAUTIOUS WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED...ACT QUICKLY. MOVE SWIFTLY TO ESCAPE FLOOD WATERS. <
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
Local storm report, May 12, 6:17 PM CDT, 3 hours 41 minutes before
LOCAL STORM REPORT NATIONAL WEATHER SERVICE MERIDIAN MS 615 PM CDT SAT MAY 12 1990 AT 545 PM CDT CLARKE COUNTY CIVIL DEFENSE REPORTED SEVERAL POWER LINES DOWN IN CENTRAL CLARKE COUNTY.
Special weather statement, May 12, 6:39 PM CDT, 3 hours 19 minutes before
MSZ009-012-ALZ008-013-130100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MERIDIAN MS 635 PM CDT SAT MAY 12 1990 SEVERE THUNDERSTORM WATCH NUMBER 219 HAS BEEN CANCELLED FOR PART OF EAST CENTRAL MISSISSIPPI. WATCH NUMBER 219 HAS BEEN CANCELLED NORTH OF A VICKSBURG TO MERIDIAN LINE. THE WATCH CONTINUES SOUTH OF THE LINE. AT 630 PM CDT RADAR INDICATES VERY STRONG THUNDERSTORMS IN NORTHERN CHOCTAW COUNTY ALABAMA. THE STORMS WERE MOVING TOWARDS THE EAST AT 30 MPH. OTHER STRONG THUNDERSTORMS WERE IN CLARKE AND JASPER COUNTIES OF EAST CENTRAL MISSISSIPPI. THESE THUNDERSTORMS WERE PRODUCING HEAVY RAIN AND FLOODING OF LOW LYING AREAS...UNDERPASSES AND STREET IS VERY LIKELY THIS EVENING.
Special weather statement, May 12, 8:20 PM CDT, 1 hour 38 minutes before
MSZ009-MSZ012-ALZ008-013-130315- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MERIDIAN MS 817 PM CDT SAT MAY 12 1990 ...TORNADO WATCH NUMBER 224 IS IN EFFECT UNTIL 200 AM CDT FOR PORTIONS OF SOUTHERN MISSISSIPPI INCLUDING JONES AND WAYNE COUNTIES... ...SEVERE THUNDERSTORM WATCH NUMBER 223 IS IN EFFECT UNTIL 1100 PM CDT FOR PORTIONS OF ALABAMA INCLUDING CHOCTOW AND SUMTER COUNTIES... ...SEVERE THUNDERSTORM WATCH NUMBER 219 IS NO LONGER IN EFFECT... ...FLASH FLOOD WARNING FOR JONES COUNTY MISSISSIPPI UNTIL 1245 AM CDT... ...FLASH FLOOD WATCH IN EFFECT FOR CENTRAL MISSISSIPPI... AT 808 PM CDT MERIDIAN WEATHER RADAR INDICATED A LARGE AREA OF RAIN WITH EMBEDDED THUNDERSTORMS COVERING MOST OF MISSISSIPPI AND WEST-CENTRAL ALABAMA. THE STRONGEST THUNDERSTORMS WERE LOCATED IN A LINE FROM GILBERTOWN ALABAMA TO WAYNESBORO TO COLLINS MISSISSIPPI. THE THUNDERSTORMS WERE MOVING EAST AT 30 MPH. MORE RAIN AND THUNDERSTORMS CONTINUE TO DEVELOP IN WESTERN MISSISSIPPI AND EASTERN LOUISIANA. THIS PRECIPITATION WILL MOVE EAST FOR THE NEXT FOUR TO SIX HOURS. THIS MEANS ADDITION HEAVY RAIN IS POSSIBLE ACROSS EAST-CENTRAL MISSISSIPPIS' COUNTIES OF JASPER...CLARK E...JONES...WAYNE AND CHOCTOW COUNTY IN WEST-CENTRAL ALABAMA.
Special weather statement, May 12, 8:30 PM CDT, 1 hour 28 minutes before
MSZALL-130200 SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSON MS 825 PM CDT SAT MAY 12 1990 ...TORNADO WATCH IN EFFECT TILL 2 AM TONIGHT OVER SOUTHERN QUARTER OF MISSISSIPPI... ...FLASH FLOOD WATCH IN EFFECT TILL MIDNIGHT FOR SECTIONS OF CENTRAL MISSISSIPPI... AT 820 PM...STRONG THUNDERSTORMS CONTINUED OVER SOUTHEAST MISSISSIPPI FROM ABOUT MONTICELLO EASTWARD TO THE ALABAMA STATELINE. OTHER THUNDERSTORMS WERE STILL OCCURRING OVER WEST-CENTRAL MISSISSIPPI BETWEEN PORT GIBSON AND EDWARNDS. SEVERAL REPORTS OF A FUNNEL CLOUD WERE RECEIVED BY THE WARREN COUNTY SHERIFFS OFFICE AROUND 8 OCLOCK NORTH OF VICKSBURG. A MASSIVE AREA OF RAIN CONTINUES OVER CENTRAL AND SECTIONS OF SOUT H MISSISSIPPI. RAIN AND SCATTERED THUNDERSTORMS WERE STILL EVIDENT OVER EAST-CENTRAL LOUISIANA MOVING TOWARDS SOUTHWEST MISSISSIPPI. < MOVEMENT WAS EAST AT 40 MILES AN HOUR.
Special weather statement, May 12, 9:11 PM CDT, 47 minutes before
MSZ009-012-ALZ008-013-130415- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MERIDIAN MS 911 PM CDT SAT MAY 12 1990 ...SEVERE THUNDERSTORM WATCH NUMBER 223 HAS BEEN CANCELLED FOR CHOCTAW AND SUMTER COUNTIES IN WEST CENTRAL ALABAMA... ...TORNADO WATCH NUMBER 224 IS IN EFFECT UNTIL 200 AM CDT FOR PORTIONS OF SOUTH MISSISSIPPI INCLUDING JONES AND WAYNE COUNTIES... ...FLASH FLOOD WARNING FOR JONES COUNTY MISSISSIPPI UNTIL 1245 AM CDT... ...FLASH FLOOD WATCH IN EFFECT FOR CENTRAL MISSISSIPPI SOUTH OF A VICKSBURG TO MERIDIAN LINE AND NORTH OF A NATCHEZ TO WAYNESBORO LINE... AT 905 PM CDT RADAR SHOWED A LARGE AREA OF RAIN WITH WIDELY SCATTERED THUNDERSTORM COVERED ALL OFA EAST CENTRAL MISSISSIPPI AND EXTREME WEST CENTRAL ALABAMA. THE STRONGEST STORM WAS IN JONES COUNTY MISSISSIPPI. ALL OF THE PRECIPITATION WAS MOVING EAST AT 25 MPH.
Special weather statement, May 12, 9:37 PM CDT, 21 minutes before
MSZALL-130200
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE JACKSON MS
925 PM CDT SAT MAY 12 1990
...TORNADO WATCH IN EFFECT TILL 2 AM TONIGHT OVER SOUTHERN QUARTER OF
MISSISSIPPI...
...FLASH FLOOD WATCH IN EFFECT TILL MIDNIGHT FOR SECTIONS OF CENTRAL
MISSISSIPPI...
AT 925 PM...STRONG THUNDERSTORMS CONTINUED OVER SOUTHEAST MISSISSIPPI
FROM HATTISBURG EAST TO MCHENRY. OTHER THUNDERSTORMS WERE OCCURRING
OCCURRING OVER WEST-CENTRAL MISSISSIPPI BETWEEN PORT GIBSON TO PINOLA
AND TO NEAR MORTON.
A MASSIVE AREA OF RAIN CONTINUES OVER CENTRAL AND SOUTH
MISSISSIPPI. RAIN AND SCATTERED THUNDERSTORMS WERE STILL EVIDENT
OVER EAST-CENTRAL LOUISIANA MOVING TOWARDS SOUTHWEST{ MISSISSIPPI.
<
MOVEMENT WAS EAST AT 40 MILES AN HOUR.The office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 12, 7:23 PM CDT | Tornado Warning | JAN | Lamar, Marion | 37 min |
| May 12, 7:40 PM CDT | Flash Flood Warning | JAN | Jones | 5 hr |
| May 12, 8:35 PM CDT | Tornado Warning | JAN | Lamar, Marion | 40 min |
| May 12, 9:31 PM CDT | Flash Flood Warning | JAN | Forrest | 3 hr |
| May 12, 9:58 PM CDT | Flash Flood Warning | JAN | Franklin, Jefferson, Lincoln | 2 hr |
| May 12, 11:16 PM CDT | Flash Flood Warning | JAN | Wayne | 6 hr |
| May 13, 12:18 AM CDT | Severe Thunderstorm Warning | JAN | Copiah | 27 min |
| May 13, 12:32 AM CDT | Flash Flood Warning | JAN | Jones | 5 hr |
| May 13, 2:24 AM CDT | Flash Flood Warning | JAN | Claiborne | 4 hr |
| May 13, 5:07 AM CDT | Flash Flood Warning | JAN | Jones | 4 hr |
Nearby
Flash Flood Warnings in Mississippi, 1990Every flash flood warning in 1990
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.