Alert archive / Mississippi / Flash Flood Warnings in 2014

Flash Flood Warning 4, NWS Jackson, MS

February 20, 2014Lawrence County, Lincoln County, Mississippi

NWS Jackson, MS issued this flash flood warning at Feb 20, 2014, 9:34 PM CST for Lawrence County, Lincoln County, Mississippi. It was in force for 116 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: Feb 20, 2014, 9:34 PM CST (03:34 UTC)
Expired: Feb 20, 2014, 11:30 PM CST
In force: 116 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Flood severity: None

Counties Lawrence County, MS, Lincoln County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 95 km from the middle of the area, began a volume at 03:37 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
Feb 20, 10:10 PM CST	FLASH FLOOD	2 Nw Jayess, MS	POWELL GROVE ROAD IS IMPASSABLE BETWEEN HOLMESVILLE ROAD AND EXCELL BOYD ROAD DUE TO FLASH FLOODING

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 00:00Z, 3.6 hours before the alert went out and 99 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: 384 J/kg
Mixed-layer CIN: -69 J/kg
Mixed-layer LCL: 1582 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 226 m²/s²
0-3 km storm-relative helicity: 261 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 2.9

Open this sounding in Storm Lab

The text

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

326 
WGUS54 KJAN 210334
FFWJAN
MSC077-085-210530-
/O.NEW.KJAN.FF.W.0004.140221T0334Z-140221T0530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON MS
934 PM CST THU FEB 20 2014

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  LAWRENCE COUNTY IN SOUTH CENTRAL MISSISSIPPI...
  LINCOLN COUNTY IN SOUTH CENTRAL MISSISSIPPI...
  THIS INCLUDES THE CITY OF BROOKHAVEN...

* UNTIL 1130 PM CST

* AT 932 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  FLASH FLOODING FROM A THUNDERSTORM OVER THE WARNED AREA.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WEST
  LINCOLN...VAUGHN...LOYD STAR...EAST LINCOLN...ROBINWOOD...ARM...OAK
  VALE...MONTICELLO...ENTERPRISE AND BOGUE CHITTO

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

&&

LAT...LON 3134 9011 3134 9063 3163 9063 3161 8997
      3153 8998 3152 8996 3150 8996 3139 8996
      3139 9004 3133 9004 3133 9005 3133 9008

$$

CME

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 20, 6:05 PM CST	Severe Thunderstorm Warning	JAN	Lincoln	55 min
Feb 20, 6:15 PM CST	Severe Thunderstorm Warning	JAN	Carroll, Grenada, Leflore	45 min
Feb 20, 6:20 PM CST	Severe Thunderstorm Warning	JAN	Clarke	40 min
Feb 20, 6:31 PM CST	Special Weather Statement	JAN	Holmes, Humphreys, Yazoo	29 min
Feb 20, 6:43 PM CST	Special Weather Statement	JAN	Simpson	42 min
Feb 20, 6:45 PM CST	Special Weather Statement	JAN	Montgomery, Webster	30 min
Feb 20, 7:10 PM CST	Special Weather Statement	JAN	Holmes, Yazoo	30 min
Feb 20, 7:12 PM CST	Tornado Warning	JAN	Marion	63 min
Feb 20, 7:34 PM CST	Special Weather Statement	JAN	Attala, Warren, Yazoo	31 min
Feb 20, 7:46 PM CST	Special Weather Statement	JAN	Scott	44 min
Feb 20, 7:46 PM CST	Severe Thunderstorm Warning	JAN	Choctaw, Montgomery, Webster	44 min
Feb 20, 7:54 PM CST	Severe Thunderstorm Warning	JAN	Attala, Choctaw	51 min
Feb 20, 7:58 PM CST	Tornado Warning	JAN	Covington, Jefferson Davis, Lamar, Marion	62 min
Feb 20, 8:08 PM CST	Severe Thunderstorm Warning	JAN	Clay, Lowndes, Oktibbeha	52 min
Feb 20, 8:27 PM CST	Flash Flood Warning	JAN	Marion	3 hr
Feb 20, 8:28 PM CST	Severe Thunderstorm Warning	JAN	Marion	32 min
Feb 20, 8:32 PM CST	Tornado Warning	JAN	Covington, Jones	58 min
Feb 20, 8:39 PM CST	Severe Thunderstorm Warning	JAN	Lowndes	51 min
Feb 20, 8:45 PM CST	Severe Thunderstorm Warning	JAN	Lamar	45 min
Feb 20, 8:52 PM CST	Tornado Warning	JAN	Lowndes	23 min
Feb 20, 9:12 PM CST	Severe Thunderstorm Warning	JAN	Forrest, Jones, Lamar	63 min
Feb 20, 9:22 PM CST	Flash Flood Warning	JAN	Lowndes, Oktibbeha	98 min
Feb 20, 9:26 PM CST	Tornado Warning	JAN	Jones	49 min
Feb 20, 9:39 PM CST	Flash Flood Warning	JAN	Covington, Forrest, Jones, Lamar	3 hr
Feb 20, 10:03 PM CST	Special Weather Statement	JAN	Rankin	32 min
Feb 20, 10:07 PM CST	Flash Flood Warning	JAN	Jefferson Davis	3 hr
Feb 20, 10:10 PM CST	Severe Thunderstorm Warning	JAN	Jefferson Davis, Marion	50 min
Feb 20, 10:18 PM CST	Severe Thunderstorm Warning	JAN	Forrest, Jones, Lamar	57 min
Feb 20, 10:29 PM CST	Severe Thunderstorm Warning	JAN	Rankin, Scott, Smith	46 min
Feb 20, 10:31 PM CST	Tornado Warning	JAN	Clarke, Jasper	29 min
Feb 20, 10:53 PM CST	Severe Thunderstorm Warning	JAN	Marion	37 min
Feb 20, 11:08 PM CST	Flash Flood Warning	JAN	Marion	3 hr
Feb 20, 11:11 PM CST	Severe Thunderstorm Warning	JAN	Forrest, Lamar	64 min
Feb 20, 11:16 PM CST	Special Weather Statement	JAN	Kemper, Noxubee	29 min
Feb 20, 11:38 PM CST	Areal Flood Warning	JAN	Lawrence, Lincoln	3 hr
Feb 20, 11:39 PM CST	Special Weather Statement	JAN	Lauderdale	31 min
Feb 20, 11:51 PM CST	Flash Flood Warning	JAN	Forrest, Lamar	114 min
Feb 21, 12:31 AM CST	Areal Flood Warning	JAN	Covington, Forrest, Jones, Lamar	3 hr
Feb 21, 1:12 AM CST	Areal Flood Warning	JAN	Jefferson Davis	3 hr
Feb 21, 2:18 AM CST	Areal Flood Warning	JAN	Marion	3 hr

Nearby

Flash Flood Warnings in Mississippi, 2014 Every flash flood warning in 2014

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.