Alert archive / Alabama / Flash Flood Warnings in 2013

Flash Flood Warning 53, NWS Mobile, AL

December 22, 2013Washington County, Alabama; Greene County, Mississippi

NWS Mobile, AL issued this flash flood warning at Dec 22, 2013, 4:25 AM CST for Washington County, Alabama; Greene County, 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, 2013, 4:25 AM CST (10:25 UTC)
Expired
Dec 22, 2013, 7:30 AM CST
In force
3 hr
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Flood severity
None

Counties Washington County, AL, Greene County, MS

The radar

The Mobile radar (KMOB), 59 km from the middle of the area, began a volume at 10:26 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

Slidell Radar S, LA (KSIL), launched 00:00Z, 10.4 hours before the alert went out and 164 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 00:00Z on 2013-12-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1006 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 00:00Z on 2013-12-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 322 square meters per square second.1939587897Sfc1 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
1006 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
573 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
322 m²/s²
0-3 km storm-relative helicity
363 m²/s²
Significant tornado parameter
2.3
Supercell composite
10.8

Open this sounding in Storm Lab

The text

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

035 
WGUS54 KMOB 221025
FFWMOB
ALC129-MSC041-221330-
/O.NEW.KMOB.FF.W.0053.131222T1025Z-131222T1330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
425 AM CST SUN DEC 22 2013

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EAST CENTRAL GREENE COUNTY IN SOUTHEAST MISSISSIPPI...
  SOUTHWESTERN WASHINGTON COUNTY IN SOUTHWEST ALABAMA...

* UNTIL 730 AM CST

* AT 420 AM CST...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 WITH ADDITIONAL HEAVY RAINS CONTINUING
  TO FALL. THIS WILL LIKELY CAUSE FLASH FLOODING IN THE WARNED
  AREA.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO VINEGAR
  BEND AND DEER PARK

LAT...LON 3141 8826 3129 8827 3114 8833 3111 8839
      3111 8843 3109 8843 3107 8849 3112 8858

$$
1 follow-up statement
821 
WGUS74 KMOB 221324
FFSMOB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
724 AM CST SUN DEC 22 2013

ALC129-MSC041-221331-
/O.EXP.KMOB.FF.W.0053.000000T0000Z-131222T1330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WASHINGTON AL-GREENE MS-
724 AM CST SUN DEC 22 2013

...THE FLASH FLOOD WARNING WILL EXPIRE AT 730 AM CST FOR EAST CENTRAL
GREENE AND SOUTHWESTERN WASHINGTON COUNTIES...

AT 721 AM CST...THE HEAVY RAINFALL THAT PROMPTED THE WARNING FOR 
EAST CENTRAL GREENE AND SOUTHWESTERN WASHINGTON COUNTIES HAS TAPERED 
OFF...THUS THE FLASH FLOOD WARNING HAS BEEN ALLOWED TO EXPIRE. 
HOWEVER...PONDING OF WATER MAY STILL BE ENCOUNTERED.

LAT...LON 3141 8826 3129 8827 3114 8833 3111 8839
      3111 8843 3109 8843 3107 8849 3112 8858

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 22, 4:10 AM CSTAreal Flood AdvisoryMOBWashington2 hr
Dec 22, 5:05 AM CSTWind AdvisoryMOB3 hr
Dec 22, 5:11 AM CSTAreal Flood AdvisoryMOBClarke, Monroe, Washington, Wilcox2 hr
Dec 22, 5:14 AM CSTRip Current StatementMOB13 hr
Dec 22, 5:21 AM CSTFlash Flood WarningMOBClarke, Monroe3 hr
Dec 22, 6:19 AM CSTAreal Flood AdvisoryMOBBaldwin, Escambia, Monroe116 min
Dec 22, 7:05 AM CSTAreal Flood AdvisoryMOBMobile115 min
Dec 22, 7:17 AM CSTFlash Flood WatchMOBButler, Clarke, Conecuh, Covington, Crenshaw, Escambia and 3 more21 hr
Dec 22, 1:21 PM CSTAreal Flood AdvisoryMOBBaldwin, Butler, Clarke, Conecuh, Escambia, Mobile and 3 more4 hr
Dec 22, 4:36 PM CSTAreal Flood AdvisoryMOBMobile54 min
Dec 22, 5:02 AM CSTAreal Flood AdvisoryMOBStone118 min
Dec 22, 5:31 AM CSTFlash Flood WarningMOBGeorge, Greene, Stone3 hr

Nearby

Flash Flood Warnings in Alabama, 2013Flash 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.