Alert archive / Mississippi / Flash Flood Warnings in 2012
Flash Flood Warning 122, NWS Jackson, MS
NWS Jackson, MS issued this flash flood warning at Aug 30, 2012, 3:21 AM CDT for 4 counties in Mississippi. It was in force for 6 hr. 4 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 30, 2012, 3:21 AM CDT (08:21 UTC)
- Expired
- Aug 30, 2012, 9:15 AM CDT
- In force
- 6 hr
- Issued by
- NWS Jackson, MS
- Area
- Storm-based polygon
- Emergency
- Flash flood emergency
- Flood severity
- None
Counties Covington County, MS, Forrest County, MS, Jones County, MS, Lamar County, MS
The radar
The Jackson/Brandon,MS radar (KDGX), 123 km from the middle of the area, began a volume at 08:23 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 30, 3:50 AM CDT | FLASH FLOOD | Purvis, MS | WATER COVING ROADS IN TOWN AND APPROACHING HOMES...1 WATER RESCUE UNDERWAY. |
| Aug 30, 5:15 AM CDT | FLASH FLOOD | Purvis, MS | 45 ROADS THROUGHOUT THE COUNTY HAVE BEEN CLOSED DUE TO FLOODING. |
| Aug 30, 5:45 AM CDT | FLASH FLOOD | Purvis, MS | WATER RESCUES ONGOING IN LAMAR COUNTY. REPORTS OF 5 FEET OF WATER IN ONE HOME. |
| Aug 30, 8:50 AM CDT | FLASH FLOOD | Purvis, MS | 70 ROADS CLOSED ACROSS THE COUNTY DUE TO FLOODING. 5 HOMES AND 3 BUSINESS BUILDINGS HAVE WATER IN THEM. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 00:00Z, 8.4 hours before the alert went out and 117 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
- 408 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 464 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 299 m²/s²
- 0-3 km storm-relative helicity
- 301 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 6.3
The text
As transmitted, in the capitals the NWS used until 2016.
987
WGUS54 KJAN 300821
FFWJAN
MSC031-035-067-073-301415-
/O.NEW.KJAN.FF.W.0122.120830T0821Z-120830T1415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON MS
321 AM CDT THU AUG 30 2012
THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
* FLASH FLOOD WARNING FOR...
COVINGTON COUNTY IN SOUTHEAST MISSISSIPPI...
THIS INCLUDES THE CITY OF COLLINS...
FORREST COUNTY IN SOUTHEAST MISSISSIPPI...
THIS INCLUDES THE CITIES OF...PETAL...HATTIESBURG...
JONES COUNTY IN SOUTHEAST MISSISSIPPI...
THIS INCLUDES THE CITIES OF...LAUREL...ELLISVILLE...
LAMAR COUNTY IN SOUTHEAST MISSISSIPPI...
* UNTIL 915 AM CDT
* AT 319 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED
BANDS OF VERY HEAVY RAIN ALONG A LINE EXTENDING FROM MOUNT OLIVE
TO LUMBERTON...MOVING NORTH AT 55 MPH. RAINFALL AMOUNTS...ON THE
ORDER OF TWO TO FOUR INCHES...HAVE ALREADY OCCURRED IN THE PAST
SIX HOURS AND FLOODING IS ALREADY OCCURRING.
* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
MCLAURIN...SUMRALL...SUNRISE...MACEDONIA...RAWLS SPRINGS...
EASTABUCHIE...OVETT...SANFORD...MOSELLE...TUCKERS CROSSING...MILL
CREEK AND SANDERSVILLE
VERY HEAVY RAINFALL WILL CONTINUE OVER THE WARNED AREA FOR THE NEXT
SIX HOURS WITH AN ADDITIONAL TWO TO FOUR INCHES POSSIBLE.
RAINFALL AMOUNTS OF THIS MAGNITUDE CAN CAUSE FLOODING ON THE
FOLLOWING ROADS IN THE WESTERN PORTIONS OF HATTIESBURG....PINE
RIDGE AND WHIDDON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. NEVER DRIVE YOUR VEHICLE INTO AREAS WHERE WATER
COVERS THE ROAD. FIND ALTERNATE ROUTES AND MOVE TO HIGHER GROUND.
MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE WATER COVERS THE ROADWAY. WHEN ENCOUNTERING FLOODED ROADS
MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.
&&
LAT...LON 3100 8935 3100 8942 3098 8943 3101 8951
3100 8957 3121 8965 3143 8965 3144 8959
3151 8959 3156 8962 3161 8975 3178 8976
3182 8894 3144 8894 3143 8914 3091 8914
3091 8934
$$
GRG2 follow-up statements
320
WGUS74 KJAN 301040
FFSJAN
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
540 AM CDT THU AUG 30 2012
MSC031-035-067-073-301415-
/O.CON.KJAN.FF.W.0122.000000T0000Z-120830T1415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LAMAR MS-JONES MS-FORREST MS-COVINGTON MS-
540 AM CDT THU AUG 30 2012
...THIS IS A FLASH FLOOD EMERGENCY FOR LAMAR COUNTY...
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 915 AM CDT FOR
COVINGTON...FORREST...JONES AND LAMAR COUNTIES...
AT 536 AM CDT...EMERGENCY MANAGEMENT REPORTED FLOODING IS ONGOING
DUE TO VERY HEAVY RAIN THAT HAS FALLEN OVER THE PAST FEW HOURS.
WATER RESCUES ARE ONGOING IN LAMAR COUNTY SOUTH OF HIGHWAY 98...WITH
SEVERAL PEOPLE TRAPPED IN HOMES. ESTIMATED RADAR RAINFALL AMOUNTS...
ON THE ORDER OF TWO TO FOUR INCHES...HAVE OCCURRED IN THE PAST THREE
HOURS.
OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO LONE
STAR...SANFORD...MILL CREEK...TUCKERS CROSSING...MOSELLE...OVETT...
EASTABUCHIE...MACEDONIA...RAWLS SPRINGS...SUNRISE...SUMRALL...
SANDERSVILLE...PETAL...MOUNT OLIVE...LAUREL...HATTIESBURG...
ELLISVILLE AND COLLINS
VERY HEAVY RAINFALL WILL CONTINUE OVER THE WARNED AREA FOR THE NEXT
THREE HOURS WITH AN ADDITIONAL ONE INCH POSSIBLE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE WATER COVERS THE ROADWAY. WHEN ENCOUNTERING FLOODED ROADS
MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.
DO NOT UNDERESTIMATE THE POWER OF FLOOD WATERS...ONLY A FEW INCHES OF
RAPIDLY FLOWING WATER CAN CARRY AWAY YOUR VEHICLE.
&&
LAT...LON 3100 8935 3100 8942 3098 8943 3101 8951
3100 8957 3121 8965 3143 8965 3144 8959
3151 8959 3156 8962 3161 8975 3178 8976
3182 8894 3144 8894 3143 8914 3091 8914
3091 8934
$$
BK777
WGUS74 KJAN 301254
FFSJAN
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
754 AM CDT THU AUG 30 2012
MSC031-035-067-073-301415-
/O.CON.KJAN.FF.W.0122.000000T0000Z-120830T1415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COVINGTON MS-JONES MS-FORREST MS-LAMAR MS-
754 AM CDT THU AUG 30 2012
...THIS IS A FLASH FLOOD EMERGENCY FOR MARION AND LAMAR COUNTIES...
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 915 AM CDT FOR
LAMAR...FORREST...JONES AND COVINGTON COUNTIES...
AS OF 715 AM CDT...BASED ON RADAR ESTIMATES AND OBSERVATIONS...10 TO
15 INCHES OF RAIN HAS FALLEN ACROSS MUCH OF MARION AND LAMAR
COUNTIES. REPORTS FROM EMERGENCY MANAGMENT OFFICIALS INDICATE THAT
PEOPLE ARE TRAPPED IN HOMES IN PARTS OF THESE COUNTIES...AND THAT
WATER RESCUES WERE ONGOING.
RADAR INDICATED THAT HEAVY RAIN WILL CONTINUE FOR AT LEAST THE NEXT
TWO TO THREE HOURS...ESPECIALLY ACROSS MARION AND WESTERN LAMAR
COUNTIES. THIS WILL ONLY WORSEN THE SERIOUS FLOODING ALREADY ONGOING
IN THESE AREAS.
ADDITIONAL FLASH FLOODING IS OCCURING IN THE OTHER WARNED COUNTIES
AS WELL. HOWEVER...RAIN HAS TEMPORARILY DIMINISHED EAST OF A COLLINS
TO PURVIS LINE. SHOWERS AND STORMS WILL LIKELY REDEVELOP OVER THESE
AREAS AS THE MORNING GOES ON.
OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO LONE
STAR...SANFORD...MILL CREEK...TUCKERS CROSSING...MOSELLE...OVETT...
EASTABUCHIE...MACEDONIA...RAWLS SPRINGS...SUNRISE...SUMRALL...
SANDERSVILLE...PETAL...MOUNT OLIVE...LAUREL...HATTIESBURG...
ELLISVILLE AND COLLINS
THIS IS A SERIOUS...LIFE THREATENING FLASH FLOOD SITUATION IN MARION
AND LAMAR COUNTIES. PEOPLE IN FLOOD PRONE AREAS SHOULD BE PREPARED TO
MOVE TO HIGHER GROUND. HEED THE ADVICE OF LOCAL EMERGENCY OFFICIALS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE WATER COVERS THE ROADWAY. WHEN ENCOUNTERING FLOODED ROADS
MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.
&&
LAT...LON 3100 8935 3100 8942 3098 8943 3101 8951
3100 8957 3121 8965 3143 8965 3144 8959
3151 8959 3156 8962 3161 8975 3178 8976
3182 8894 3144 8894 3143 8914 3091 8914
3091 8934
$$
AEGThe office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 29, 8:06 PM CDT | Special Weather Statement | JAN | Covington, Forrest, Jefferson Davis, Lamar, Lawrence, Lincoln and 1 more | 54 min |
| Aug 29, 9:28 PM CDT | Flash Flood Warning | JAN | Covington, Forrest, Jones, Lamar | 6 hr |
| Aug 29, 9:35 PM CDT | Flash Flood Warning | JAN | Jefferson Davis, Lawrence, Lincoln, Marion | 6 hr |
| Aug 29, 10:15 PM CDT | Flash Flood Warning | JAN | Jefferson Davis, Lawrence, Lincoln, Marion | 5 hr |
| Aug 29, 11:13 PM CDT | Special Weather Statement | JAN | Copiah, Hinds, Jasper, Jones, Rankin, Simpson and 1 more | 57 min |
| Aug 30, 12:23 AM CDT | Flash Flood Warning | JAN | Jasper, Smith | 6 hr |
| Aug 30, 2:05 AM CDT | Flash Flood Warning | JAN | Copiah, Simpson | 6 hr |
| Aug 30, 2:10 AM CDT | River Flood Warning | JAN | Jones | 6 days |
| Aug 30, 2:52 AM CDT | Flash Flood Warning | JAN | Clarke | 6 hr |
| Aug 30, 2:55 AM CDT | Tornado Warning | JAN | Clarke, Jasper | 29 min |
| Aug 30, 3:23 AM CDT | Flash Flood Warning | JAN | Jefferson Davis, Lawrence, Marion | 112 min |
| Aug 30, 3:29 AM CDT | Flash Flood Warning | JAN | Franklin, Lincoln | 6 hr |
| Aug 30, 5:06 AM CDT | Tornado Warning | JAN | Clarke, Lauderdale | 24 min |
| Aug 30, 5:07 AM CDT | Flash Flood Warning | JAN | Jefferson Davis, Lamar, Lawrence, Marion | 4 hr |
| Aug 30, 5:45 AM CDT | Tornado Warning | JAN | Clarke, Lauderdale | 45 min |
| Aug 30, 6:40 AM CDT | Tornado Warning | JAN | Neshoba, Newton | 23 min |
| Aug 30, 6:52 AM CDT | Tornado Warning | JAN | Clarke, Lauderdale | 53 min |
| Aug 30, 7:21 AM CDT | Flash Flood Warning | JAN | Lauderdale, Newton | 6 hr |
| Aug 30, 7:35 AM CDT | Flash Flood Warning | JAN | Hinds, Rankin | 6 hr |
| Aug 30, 7:37 AM CDT | Tornado Warning | JAN | Clarke | 29 min |
| Aug 30, 7:41 AM CDT | Tornado Warning | JAN | Kemper, Lauderdale, Neshoba, Newton | 27 min |
| Aug 30, 8:09 AM CDT | Flash Flood Warning | JAN | Copiah, Simpson | 5 hr |
| Aug 30, 8:29 AM CDT | Tornado Warning | JAN | Clarke | 46 min |
| Aug 30, 8:37 AM CDT | Flash Flood Warning | JAN | Clarke | 5 hr |
| Aug 30, 8:57 AM CDT | Flash Flood Warning | JAN | Lamar, Marion | 4 hr |
| Aug 30, 9:10 AM CDT | Tornado Warning | JAN | Covington, Forrest, Jones, Lamar | 36 min |
| Aug 30, 9:14 AM CDT | Flash Flood Warning | JAN | Covington, Jefferson Davis, Lawrence | 4 hr |
| Aug 30, 9:36 AM CDT | Tornado Warning | JAN | Clarke | 39 min |
| Aug 30, 9:41 AM CDT | Flash Flood Warning | JAN | Lincoln | 4 hr |
| Aug 30, 10:12 AM CDT | River Flood Warning | JAN | Attala, Holmes | 12 hr |
| Aug 30, 10:14 AM CDT | Tornado Warning | JAN | Clarke, Lauderdale | 46 min |
| Aug 30, 10:21 AM CDT | River Flood Warning | JAN | Covington, Forrest | 47 hr |
| Aug 30, 10:24 AM CDT | River Flood Warning | JAN | Clarke | 34 hr |
| Aug 30, 10:36 AM CDT | Flash Flood Warning | JAN | Forrest | 3 hr |
| Aug 30, 10:54 AM CDT | River Flood Warning | JAN | Leake | 10 hr |
| Aug 30, 11:28 AM CDT | Flash Flood Warning | JAN | Jones | 107 min |
| Aug 30, 11:30 AM CDT | River Flood Warning | JAN | Copiah, Simpson | 10 hr |
| Aug 30, 11:30 AM CDT | River Flood Warning | JAN | Lawrence | 4 days |
| Aug 30, 11:30 AM CDT | River Flood Warning | JAN | Marion | 56 hr |
| Aug 30, 11:30 AM CDT | River Flood Warning | JAN | Simpson | 10 hr |
| Aug 30, 12:37 PM CDT | Areal Flood Warning | JAN | Covington, Forrest, Jefferson Davis, Jones, Lamar, Lawrence and 1 more | 12 hr |
| Aug 30, 12:57 PM CDT | Areal Flood Warning | JAN | Copiah, Hinds, Lincoln, Rankin, Simpson | 12 hr |
| Aug 30, 1:38 PM CDT | Tornado Warning | JAN | Kemper, Lauderdale | 34 min |
| Aug 30, 3:37 PM CDT | Flash Flood Warning | JAN | Forrest, Lamar | 5 hr |
| Aug 30, 4:53 PM CDT | Flash Flood Warning | JAN | Washington | 112 min |
| Aug 30, 4:57 PM CDT | Flash Flood Warning | JAN | Jones | 3 hr |
| Aug 30, 5:16 PM CDT | Tornado Warning | JAN | Forrest | 14 min |
| Aug 30, 6:25 PM CDT | Areal Flood Warning | JAN | Lauderdale | 8 hr |
| Aug 30, 6:39 PM CDT | Flash Flood Warning | JAN | Bolivar, Washington | 111 min |
| Aug 30, 6:50 PM CDT | Special Weather Statement | JAN | Claiborne, Warren | 45 min |
Nearby
Flash Flood Warnings in Mississippi, 2012Every flash flood warning in 2012
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.