Alert archive / Mississippi / Flash Flood Warnings in 2011

Flash Flood Warning 161, NWS Jackson, MS

December 22, 20115 counties in Mississippi

NWS Jackson, MS issued this flash flood warning at Dec 22, 2011, 6:04 AM CST for 5 counties in Mississippi. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Dec 22, 2011, 6:04 AM CST (12:04 UTC)
Expired: Dec 22, 2011, 9:00 AM CST
In force: 3 hr
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Flood severity: None

Counties Carroll County, MS, Grenada County, MS, Humphreys County, MS, Leflore County, MS, Montgomery County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 151 km from the middle of the area, began a volume at 12:07 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

Little Rock, AR (KLZK), launched 12:00Z, 0.1 hours before the alert went out and 134 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1025 m above ground
0-6 km bulk shear: 60 kt
0-1 km storm-relative helicity: 32 m²/s²
0-3 km storm-relative helicity: 35 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.

966 
WGUS54 KJAN 221204
FFWJAN
MSC015-043-053-083-097-221500-
/O.NEW.KJAN.FF.W.0161.111222T1204Z-111222T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON MS
604 AM CST THU DEC 22 2011

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHEASTERN HUMPHREYS COUNTY IN CENTRAL MISSISSIPPI...
  CARROLL COUNTY IN NORTH CENTRAL MISSISSIPPI...
  GRENADA COUNTY IN NORTH CENTRAL MISSISSIPPI...
  THIS INCLUDES THE CITY OF GRENADA...
  LEFLORE COUNTY IN NORTH CENTRAL MISSISSIPPI...
  THIS INCLUDES THE CITIES OF...ITTA BENA...GREENWOOD...
  NORTHERN MONTGOMERY COUNTY IN NORTH CENTRAL MISSISSIPPI...
  THIS INCLUDES THE CITY OF WINONA...

* UNTIL 900 AM CST

* AT 603 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED
  THUNDERSTORMS PRODUCING VERY HEAVY RAIN ALONG A LINE EXTENDING FROM
  GRENADA TO GREENWOOD...MOVING NORTHEAST AT 15 MPH. ESTIMATED RADAR
  RAINFALL AMOUNTS...ON THE ORDER OF ONE TO THREE INCHES...HAVE
  OCCURRED IN THE PAST TWO HOURS.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SEVEN
  PINES...TEOC...COILA...MALMAISON...NORTH CARROLLTON...JEFFERSON...
  ELLIOTT...DUCK HILL...GORE SPRINGS...SWEATMAN...LODI AND MISTERTON

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

RAINFALL AMOUNTS FROM ONE TO THREE INCHES A HOUR CAN CAUSE FLOODING
ON ROADS IN AND AROUND THE CITY OF GRENADA...INCLUDING MONROE STREET
AT FAIRGROUND ROAD...VAN DORN BETWEEN COMMERCE AND POPLAR STREETS...
MOUND STREET AT JEFFERSON STREET...PEARL AT LYNCH STREET AND COUNTRY
CLUB ROAD JUST SOUTH OF EAST MONROE STREET.

RAINFALL AMOUNTS FROM ONE TO THREE INCHES IN A HOUR CAN CAUSE
FLOODING IN THE FOLLOWING AREAS NEAR GREENWOOD: GLENDALE
SUBDIVISION...UNDERPASS ON MAIN STREET...1000 BLOCK OF BROAD
STREET...500 TO 900 BLOCKS OF GRAND BOULEVARD...900 TO 1000 BLOCK OF
STRONG AVENUE 400 BLOCK OF FULTON AND HENRY STREETS AND MITCHELL
STREET IN ITTA BENA.

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 3386 8950 3347 8952 3331 9007 3336 9030
      3324 9033 3320 9045 3320 9046 3382 9044
      3382 9020 3378 9017 3374 9030 3371 9030
      3370 9027 3374 9024 3373 9014 3382 9013
      3383 8994 3390 8992

$$

CME

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 22, 2:08 AM CST	Special Weather Statement	JAN	Yazoo	32 min
Dec 22, 3:38 AM CST	Dense Fog Advisory	JAN	Clarke, Covington, Forrest, Jasper, Jefferson Davis, Jones and 6 more	5 hr
Dec 22, 4:59 AM CST	Flash Flood Warning	JAN	Bolivar, Sunflower, Washington	3 hr
Dec 22, 5:09 AM CST	Flash Flood Watch	JAN	Adams, Attala, Bolivar, Carroll, Choctaw, Claiborne and 25 more	7 hr
Dec 22, 8:01 AM CST	Special Weather Statement	JAN	Lincoln	29 min
Dec 22, 8:39 AM CST	Special Weather Statement	JAN	Lawrence	31 min
Dec 22, 8:49 AM CST	Severe Thunderstorm Warning	JAN	Copiah, Simpson	26 min
Dec 22, 8:59 AM CST	Severe Thunderstorm Warning	JAN	Lawrence, Lincoln	46 min
Dec 22, 9:15 AM CST	Severe Thunderstorm Warning	JAN	Jasper, Rankin, Simpson, Smith	45 min
Dec 22, 9:40 AM CST	Severe Thunderstorm Warning	JAN	Jefferson Davis, Lawrence, Marion	50 min
Dec 22, 10:11 AM CST	Severe Thunderstorm Warning	JAN	Covington, Jefferson Davis	49 min
Dec 22, 10:14 AM CST	Special Weather Statement	JAN	Newton, Smith	31 min
Dec 22, 10:22 AM CST	Severe Thunderstorm Warning	JAN	Lamar, Marion	53 min
Dec 22, 10:48 AM CST	Severe Thunderstorm Warning	JAN	Kemper, Lauderdale, Newton	31 min
Dec 22, 10:52 AM CST	Severe Thunderstorm Warning	JAN	Clarke, Jasper	38 min
Dec 22, 11:09 AM CST	Severe Thunderstorm Warning	JAN	Forrest, Lamar	39 min
Dec 22, 11:25 AM CST	Severe Thunderstorm Warning	JAN	Clarke, Lauderdale	31 min
Dec 22, 11:32 AM CST	Severe Thunderstorm Warning	JAN	Jones	16 min
Dec 22, 11:56 AM CST	River Flood Advisory	JAN	Bolivar, Washington	10 min
Dec 22, 11:56 AM CST	River Flood Advisory	JAN	Issaquena, Washington	10 min
Dec 22, 11:56 AM CST	River Flood Advisory	JAN	Claiborne, Jefferson, Warren	10 min
Dec 22, 11:56 AM CST	River Flood Advisory	JAN	Adams, Wilkinson	10 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.