Alert archive / Mississippi / Flash Flood Warnings in 2011

Flash Flood Warning 124, NWS Jackson, MS

August 9, 2011Jasper County, Jones County, Smith County, Mississippi

NWS Jackson, MS issued this flash flood warning at Aug 9, 2011, 7:47 PM CDT for Jasper County, Jones County, Smith County, Mississippi. It was in force for 118 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: Aug 9, 2011, 7:47 PM CDT (00:47 UTC)
Expired: Aug 9, 2011, 9:45 PM CDT
In force: 118 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Flood severity: None

Counties Jasper County, MS, Jones County, MS, Smith County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 98 km from the middle of the area, began a volume at 00:48 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, 0.8 hours before the alert went out and 108 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: 2426 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 1419 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 62 m²/s²
0-3 km storm-relative helicity: 107 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.5

Open this sounding in Storm Lab

The text

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

322 
WGUS54 KJAN 100047
FFWJAN
MSC061-067-129-100245-
/O.NEW.KJAN.FF.W.0124.110810T0047Z-110810T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON MS
747 PM CDT TUE AUG 9 2011

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN SMITH COUNTY IN CENTRAL MISSISSIPPI...
  SOUTHERN JASPER COUNTY IN EAST CENTRAL MISSISSIPPI...
  THIS INCLUDES THE CITY OF STRINGER...
  NORTHERN JONES COUNTY IN SOUTHEAST MISSISSIPPI...
  THIS INCLUDES THE CITIES OF...LAUREL...ELLISVILLE...

* UNTIL 945 PM CDT

* AT 747 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED
  THUNDERSTORMS PRODUCING VERY HEAVY RAIN NEAR LAUREL. THE STORMS    
  WERE MOVING SLOWLY SOUTHEAST. ESTIMATED RADAR RAINFALL             
  AMOUNTS...ON THE ORDER OF TWO TO FOUR INCHES...HAVE OCCURRED IN    
  THE PAST TWO HOURS IN THE WARNING AREA.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO MOSS
  AND SANDERSVILLE

VERY HEAVY RAINFALL WILL CONTINUE OVER THE WARNED AREA FOR THE NEXT
HOUR 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.

&&

LAT...LON 3181 8894 3154 8894 3163 8940 3180 8940
      3194 8946 3185 8892

$$

EEC

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 9, 7:03 PM CDT	Severe Thunderstorm Warning	JAN	Covington, Jasper, Jones, Smith	27 min
Aug 9, 7:06 PM CDT	Special Weather Statement	JAN	Rankin	44 min
Aug 9, 7:09 PM CDT	Severe Thunderstorm Warning	JAN	Rankin, Simpson, Smith	36 min
Aug 9, 8:26 PM CDT	Special Weather Statement	JAN	Sharkey	44 min
Aug 9, 10:03 PM CDT	Special Weather Statement	JAN	Sharkey	47 min
Aug 10, 12:11 AM CDT	Special Weather Statement	JAN	Scott	59 min
Aug 10, 1:43 PM CDT	Special Weather Statement	JAN	Noxubee	32 min
Aug 10, 3:18 PM CDT	Special Weather Statement	JAN	Clay	32 min
Aug 10, 3:30 PM CDT	Severe Thunderstorm Warning	JAN	Clay	60 min
Aug 10, 4:03 PM CDT	Severe Thunderstorm Warning	JAN	Lowndes, Oktibbeha	72 min
Aug 10, 4:09 PM CDT	Special Weather Statement	JAN	Simpson	31 min
Aug 10, 4:46 PM CDT	Special Weather Statement	JAN	Noxubee	29 min
Aug 10, 4:52 PM CDT	Special Weather Statement	JAN	Simpson	58 min
Aug 10, 4:55 PM CDT	Special Weather Statement	JAN	Jones	30 min
Aug 10, 4:58 PM CDT	Severe Thunderstorm Warning	JAN	Noxubee	37 min
Aug 10, 5:01 PM CDT	Severe Thunderstorm Warning	JAN	Jones	44 min
Aug 10, 5:26 PM CDT	Special Weather Statement	JAN	Neshoba	59 min
Aug 10, 5:45 PM CDT	Special Weather Statement	JAN	Smith	30 min
Aug 10, 6:13 PM CDT	Special Weather Statement	JAN	Smith	47 min
Aug 10, 6:19 PM CDT	Special Weather Statement	JAN	Simpson	31 min
Aug 10, 6:28 PM CDT	Special Weather Statement	JAN	Kemper	32 min
Aug 10, 6:58 PM CDT	Special Weather Statement	JAN	Lauderdale	32 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.