Alert archive / Mississippi / Flash Flood Warnings in 2011

Flash Flood Warning 83, NWS Jackson, MS

May 13, 20114 counties in Mississippi

NWS Jackson, MS issued this flash flood warning at May 13, 2011, 7:44 PM CDT for 4 counties in Mississippi. It was in force for 96 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 13, 2011, 7:44 PM CDT (00:44 UTC)
Expired: May 13, 2011, 9:20 PM CDT
In force: 96 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Flood severity: None

Counties Choctaw County, MS, Clay County, MS, Oktibbeha County, MS, Webster County, MS

The radar

The Columbus AFB radar (KGWX), 79 km from the middle of the area, began a volume at 00:44 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.

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 0.7 hours before the alert went out and 161 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: 2289 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 1284 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 56 m²/s²
0-3 km storm-relative helicity: 113 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 6.5

Open this sounding in Storm Lab

The text

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

364 
WGUS54 KJAN 140044
FFWJAN
MSC019-025-105-155-140245-
/O.NEW.KJAN.FF.W.0083.110514T0044Z-110514T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON MS
744 PM CDT FRI MAY 13 2011

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CHOCTAW COUNTY IN CENTRAL MISSISSIPPI...
  SOUTHEASTERN WEBSTER COUNTY IN NORTH CENTRAL MISSISSIPPI...
  SOUTHERN CLAY COUNTY IN NORTHEAST MISSISSIPPI...
  THIS INCLUDES THE CITY OF WEST POINT...
  OKTIBBEHA COUNTY IN NORTHEAST MISSISSIPPI...
  THIS INCLUDES THE CITY OF STARKVILLE...

* UNTIL 945 PM CDT

* AT 744 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED
  THUNDERSTORMS PRODUCING VERY HEAVY RAIN ALONG A LINE EXTENDING FROM
  EUPORA TO 18 MILES SOUTHWEST OF CHESTER...OR ALONG A LINE EXTENDING
  FROM 19 MILES SOUTHWEST OF MONTPELIER TO 11 MILES NORTHEAST OF
  KOSCIUSKO...MOVING EAST AT 40 MPH. ESTIMATED RADAR RAINFALL
  AMOUNTS...ON THE ORDER OF TWO TO FOUR INCHES...HAVE OCCURRED IN THE
  PAST TWO HOURS.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  MATHISTON...CUMBERLAND...SHERWOOD...REFORM...MABEN...ACKERMAN...
  PHEBA...GRIFFITH...LONGVIEW...CRAIG SPRINGS...MULDROW...OKTOC...
  SESSUMS...TIBBEE AND WAVERLY

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

&&

LAT...LON 3353 8847 3355 8852 3351 8866 3329 8867
      3329 8910 3321 8911 3320 8932 3328 8932
      3330 8943 3333 8946 3344 8945 3344 8941
      3355 8931 3366 8910 3369 8848 3365 8850

$$

BYB

1 follow-up statement

599 
WGUS74 KJAN 140220
FFSJAN

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
920 PM CDT FRI MAY 13 2011

MSC019-025-105-155-140231-
/O.CAN.KJAN.FF.W.0083.000000T0000Z-110514T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CLAY MS-WEBSTER MS-OKTIBBEHA MS-CHOCTAW MS-
920 PM CDT FRI MAY 13 2011

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR CHOCTAW...
OKTIBBEHA...SOUTHEASTERN WEBSTER AND SOUTHERN CLAY COUNTIES...

LAT...LON 3353 8847 3355 8852 3351 8866 3329 8867
      3329 8910 3321 8911 3320 8932 3328 8932
      3330 8943 3333 8946 3344 8945 3344 8941
      3355 8931 3366 8910 3369 8848 3365 8850

$$

BYB

The office that day

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

Issued	Product	Office	Counties	Lasted
May 13, 7:04 PM CDT	Special Weather Statement	JAN	Jefferson Davis	31 min
May 13, 7:13 PM CDT	Special Weather Statement	JAN	Scott	47 min
May 13, 7:16 PM CDT	Severe Thunderstorm Warning	JAN	Choctaw, Noxubee, Oktibbeha, Winston	44 min
May 13, 7:53 PM CDT	Severe Thunderstorm Warning	JAN	Marion	67 min
May 13, 8:01 PM CDT	Severe Thunderstorm Warning	JAN	Choctaw, Noxubee, Oktibbeha, Winston	44 min
May 13, 8:08 PM CDT	Severe Thunderstorm Warning	JAN	Jefferson Davis, Marion	52 min
May 13, 8:22 PM CDT	Tornado Warning	JAN	Noxubee, Winston	38 min
May 13, 8:30 PM CDT	Special Weather Statement	JAN	Lamar	45 min
May 13, 8:35 PM CDT	Flash Flood Warning	JAN	Choctaw, Noxubee, Winston	115 min
May 13, 8:47 PM CDT	Severe Thunderstorm Warning	JAN	Noxubee	43 min
May 13, 8:53 PM CDT	Severe Thunderstorm Warning	JAN	Kemper, Neshoba, Noxubee, Winston	52 min
May 13, 8:58 PM CDT	Severe Thunderstorm Warning	JAN	Lamar	25 min
May 13, 9:47 PM CDT	Special Weather Statement	JAN	Kemper, Lauderdale, Newton	58 min
May 13, 10:42 PM CDT	Special Weather Statement	JAN	Clarke, Covington, Jasper, Jones, Lauderdale	58 min
May 13, 10:54 PM CDT	Special Weather Statement	JAN	Marion	46 min
May 13, 11:17 PM CDT	Severe Thunderstorm Warning	JAN	Clarke, Lauderdale	28 min
May 13, 11:25 PM CDT	Special Weather Statement	JAN	Jones	30 min
May 13, 11:42 PM CDT	Severe Thunderstorm Warning	JAN	Covington, Forrest, Jones, Lamar	35 min
May 14, 12:11 AM CDT	Flash Flood Warning	JAN	Forrest, Jones, Lamar	94 min

Nearby

Flash Flood Warnings in Mississippi, 2011 Every flash flood warning in 2011

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; radar from the NEXRAD Level II archive.