Alert archive / Mississippi / Flash Flood Warnings in 2013

Flash Flood Warning 13, NWS Mobile, AL

May 1, 2013George County, Mississippi

NWS Mobile, AL issued this flash flood warning at May 1, 2013, 6:50 PM CDT for George County, Mississippi. It was in force for 3 hr. 4 reports 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
May 1, 2013, 6:50 PM CDT (23:50 UTC)
Expired
May 1, 2013, 9:45 PM CDT
In force
3 hr
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Flood severity
None

County George County, MS

The radar

The Mobile radar (KMOB), 44 km from the middle of the area, began a volume at 23:53 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

TimeReportWhereRemark
May 1, 7:00 PM CDTFLASH FLOOD1 E Lucedale, MSWATER COVERING THE INTERSECTION OF HIGHWAY 26 WEST AND FIG FARM ROAD.
May 1, 7:00 PM CDTFLASH FLOOD2 N Barton, MSWATER COVERING THE INTERSECTION OF STATE HIGHWAY 63 S AND COOPER ROAD.
May 1, 7:00 PM CDTFLASH FLOODLucedale, MSTHREE FEET OF WATER COVERING THE ROAD AT HIGHWAY 198 WEST AND RAILROAD OVERPASS.
May 1, 7:39 PM CDTHEAVY RAIN 11.22 Wsw Agricola, MSBROADCAST MEDIA RELAYED A REPORT OF 11.2 INCHES OF STORM TOTAL RAINFALL ON BARTON AGRICOLA RD.

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

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 11.8 hours before the alert went out and 119 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-pSkew-T log-p diagram, Slidell Radar S, LA at 12:00Z on 2013-05-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 856 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 12:00Z on 2013-05-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 56 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
856 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
553 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
56 m²/s²
0-3 km storm-relative helicity
161 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.

061 
WGUS54 KMOB 012350
FFWMOB
MSC039-020245-
/O.NEW.KMOB.FF.W.0013.130501T2350Z-130502T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
650 PM CDT WED MAY 1 2013

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EASTERN GEORGE COUNTY IN SOUTHEAST MISSISSIPPI...

* UNTIL 945 PM CDT

* AT 650 PM CDT...VERY HEAVY RAINFALL WAS INDICATED OVER THE WARNED
  AREA AND RADAR ESTIMATES SHOW 2 TO 3 INCHES OF RAINFALL HAS
  OCCURRED OVER THE PAST HOUR. THIS WILL LIKELY CAUSE FLASH FLOODING
  IN THE WARNED AREA.

* LOCATIONS IMPACTED INCLUDE...
  LUCEDALE...AGRICOLA...VAUGHN...GIBSON LANDING

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WARNING MEANS FLOODING IS IMMINENT OR OCCURRING. SEEK
HIGHER GROUND IMMEDIATELY. DO NOT DRIVE OR WALK INTO AREAS WHERE
WATER CROSSES A ROAD. TURN AROUND - DON'T DROWN!

NEVER TRY TO CROSS OR PLAY IN AN URBAN SPILLWAY OR FLOWING CREEK...
EVEN A SMALL ONE. FLASH FLOODING IS A MAJOR KILLER.

&&

LAT...LON 3081 8884 3076 8870 3079 8863 3086 8858
      3100 8869 3100 8843 3073 8841 3073 8884

$$

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 1, 12:32 PM CDTAreal Flood AdvisoryMOBGeorge, Perry, Stone6 hr
May 1, 2:21 PM CDTAreal Flood WarningMOBGeorge, Greene, Perry, Stone12 hr
May 1, 3:06 PM CDTFlash Flood WarningMOBGeorge6 hr
May 1, 3:19 PM CDTFlash Flood WatchMOBGeorge, Greene, Perry, Stone, Wayne24 hr
May 1, 4:09 PM CDTFlash Flood WarningMOBStone6 hr
May 1, 5:42 PM CDTTornado WarningMOBGeorge48 min

Nearby

Flash Flood Warnings in Mississippi, 2013Every flash flood warning in 2013

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.