Alert archive / Mississippi / Flash Flood Warnings in 2012

Flash Flood Warning 108, NWS Jackson, MS

August 16, 2012Lauderdale County, Newton County, Mississippi

NWS Jackson, MS issued this flash flood warning at Aug 16, 2012, 3:46 PM CDT for Lauderdale County, Newton County, Mississippi. It was in force for 73 min. 1 report 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 16, 2012, 3:46 PM CDT (20:46 UTC)
Expired: Aug 16, 2012, 4:59 PM CDT
In force: 73 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Flood severity: None

Counties Lauderdale County, MS, Newton County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 114 km from the middle of the area, began a volume at 20:47 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 16, 4:20 PM CDT	FLASH FLOOD	Meridian, MS	SEVERAL STREETS FLOODED AROUND THE CITY. MULTIPLE ROADS ARE BEING CLOSED. ONE PERSON WAS STUCK IN A VEHICLE SURROUNDED BY WATER.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 8.8 hours before the alert went out and 123 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 2430 J/kg
Mixed-layer CIN: -40 J/kg
Mixed-layer LCL: 902 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: -49 m²/s²
0-3 km storm-relative helicity: -58 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

419 
WGUS54 KJAN 162046
FFWJAN
MSC075-101-162245-
/O.NEW.KJAN.FF.W.0108.120816T2046Z-120816T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON MS
346 PM CDT THU AUG 16 2012

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  LAUDERDALE COUNTY IN EAST CENTRAL MISSISSIPPI...
  THIS INCLUDES THE CITIES OF...LAUDERDALE...MERIDIAN...
  CENTRAL NEWTON COUNTY IN EAST CENTRAL MISSISSIPPI...

* UNTIL 545 PM CDT

* AT 346 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED
  THUNDERSTORMS PRODUCING VERY HEAVY RAIN ALONG A LINE EXTENDING FROM
  DECATUR TO MARION...OR ALONG A LINE EXTENDING FROM 9 MILES NORTH OF
  NEWTON TO MERIDIAN...MOVING EAST AT 10 MPH. ESTIMATED RADAR        
  RAINFALL AMOUNTS...ON THE ORDER OF ONE TO THREE INCHES...HAVE      
  OCCURRED IN THE PAST HOUR.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  LITTLE ROCK...ALAMUCHA...DUFFEE...SUQUALENA...KEWANEE...TOOMSUBA
  AND COLLINSVILLE

VERY HEAVY RAINFALL WILL CONTINUE OVER THE WARNED AREA FOR THE NEXT
TWO HOURS WITH AN ADDITIONAL TWO TO THREE INCHES POSSIBLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF URBAN
AREAS...INCLUDING HIGHWAYS...STREETS AND UNDERPASSES...IN ADDITION TO
LOW LYING AND OTHER POOR DRAINAGE AREAS.

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 3227 8842 3227 8892 3236 8892 3237 8917
      3254 8917 3252 8839

$$

BK

1 follow-up statement

893 
WGUS74 KJAN 162159
FFSJAN

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
459 PM CDT THU AUG 16 2012

MSC075-101-162209-
/O.CAN.KJAN.FF.W.0108.000000T0000Z-120816T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
NEWTON MS-LAUDERDALE MS-
459 PM CDT THU AUG 16 2012

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR LAUDERDALE AND
CENTRAL NEWTON COUNTIES...

LAT...LON 3227 8842 3227 8892 3236 8892 3237 8917
      3254 8917 3252 8839

$$

BK

The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 16, 1:28 PM CDT	Special Weather Statement	JAN	Clarke	32 min
Aug 16, 1:31 PM CDT	Special Weather Statement	JAN	Leake	59 min
Aug 16, 1:51 PM CDT	Special Weather Statement	JAN	Winston	59 min
Aug 16, 2:02 PM CDT	Severe Thunderstorm Warning	JAN	Winston	58 min
Aug 16, 2:12 PM CDT	Special Weather Statement	JAN	Lauderdale	63 min
Aug 16, 2:30 PM CDT	Severe Thunderstorm Warning	JAN	Winston	60 min
Aug 16, 2:36 PM CDT	Special Weather Statement	JAN	Choctaw	59 min
Aug 16, 2:48 PM CDT	Special Weather Statement	JAN	Clarke	32 min
Aug 16, 2:58 PM CDT	Special Weather Statement	JAN	Issaquena, Sharkey	47 min
Aug 16, 3:11 PM CDT	Severe Thunderstorm Warning	JAN	Noxubee	49 min
Aug 16, 3:22 PM CDT	Severe Thunderstorm Warning	JAN	Newton	38 min
Aug 16, 3:31 PM CDT	Special Weather Statement	JAN	Jones	29 min
Aug 16, 4:01 PM CDT	Special Weather Statement	JAN	Lauderdale	29 min
Aug 16, 4:15 PM CDT	Special Weather Statement	JAN	Issaquena	30 min
Aug 16, 4:16 PM CDT	Special Weather Statement	JAN	Warren	29 min
Aug 16, 4:18 PM CDT	Special Weather Statement	JAN	Newton	32 min
Aug 16, 4:19 PM CDT	Special Weather Statement	JAN	Scott	46 min
Aug 16, 4:21 PM CDT	Severe Thunderstorm Warning	JAN	Newton, Scott	54 min
Aug 16, 4:33 PM CDT	Special Weather Statement	JAN	Forrest	47 min
Aug 16, 4:43 PM CDT	Special Weather Statement	JAN	Madison	32 min
Aug 16, 5:17 PM CDT	Special Weather Statement	JAN	Scott	43 min
Aug 16, 5:19 PM CDT	Special Weather Statement	JAN	Newton	46 min
Aug 16, 5:21 PM CDT	Severe Thunderstorm Warning	JAN	Rankin, Scott	39 min
Aug 16, 5:37 PM CDT	Special Weather Statement	JAN	Madison	38 min
Aug 16, 6:07 PM CDT	Special Weather Statement	JAN	Scott	48 min
Aug 16, 6:32 PM CDT	Special Weather Statement	JAN	Forrest	43 min
Aug 16, 6:36 PM CDT	Special Weather Statement	JAN	Lamar	29 min
Aug 16, 6:40 PM CDT	Severe Thunderstorm Warning	JAN	Attala, Holmes	50 min

Nearby

Flash Flood Warnings in Mississippi, 2012 Every 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.