Alert archive / Alabama / Flash Flood Warnings in 2013

Flash Flood Warning 37, NWS Mobile, AL

July 22, 2013Wilcox County, Alabama

NWS Mobile, AL issued this flash flood warning at Jul 22, 2013, 5:35 PM CDT for Wilcox County, Alabama. 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
Jul 22, 2013, 5:35 PM CDT (22:35 UTC)
Expired
Jul 22, 2013, 8:30 PM CDT
In force
3 hr
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Flood severity
None

County Wilcox County, AL

The radar

The Birmingham radar (KBMX), 127 km from the middle of the area, began a volume at 22:35 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

Birmingham, AL (KBMX), launched 12:00Z, 10.6 hours before the alert went out and 127 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, Birmingham, AL at 12:00Z on 2013-07-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1000 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Birmingham, AL at 12:00Z on 2013-07-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 53 square meters per square second.1939Sfc1 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
1000 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
463 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
53 m²/s²
0-3 km storm-relative helicity
16 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.

114 
WGUS54 KMOB 222235
FFWMOB
ALC131-230130-
/O.NEW.KMOB.FF.W.0037.130722T2235Z-130723T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
535 PM CDT MON JUL 22 2013

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTH CENTRAL WILCOX COUNTY IN SOUTH CENTRAL ALABAMA...

* UNTIL 830 PM CDT

* AT 532 PM CDT...VERY HEAVY RAINFALL WAS INDICATED OVER THE WARNED
  AREA AND RADAR ESTIMATES SHOW 2 TO 4 INCHES OF RAINFALL HAS
  OCCURRED OVER THE PAST HOUR WITH AN ADDITIONAL 1 TO 2 INCHES OF
  RAINFALL EXPECTED OVER THE NEXT HOUR. THIS WILL LIKELY CAUSE FLASH
  FLOODING IN THE WARNED AREA.

* LOCATIONS IMPACTED INCLUDE...
  BOYKIN...             CATHERINE...

LAT...LON 3221 8737 3220 8733 3215 8727 3214 8725
      3210 8722 3208 8719 3205 8717 3205 8712
      3198 8715 3201 8746 3218 8753 3222 8753
      3223 8739

$$
1 follow-up statement
742 
WGUS74 KMOB 230126
FFSMOB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
826 PM CDT MON JUL 22 2013

ALC131-230137-
/O.EXP.KMOB.FF.W.0037.000000T0000Z-130723T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WILCOX AL-
826 PM CDT MON JUL 22 2013

...THE FLASH FLOOD WARNING WILL BE ALLOWED TO EXPIRE AT 830 PM CDT
FOR NORTH CENTRAL WILCOX COUNTY...

AT 825 PM CDT...THE HEAVY RAINFALL THAT PROMPTED THE WARNING FOR
NORTH CENTRAL WILCOX COUNTY HAS ENDED...THUS THE FLASH FLOOD WARNING
WILL BE ALLOWED TO EXPIRE AT 830 PM CDT. HOWEVER...PONDING OF WATER
MAY STILL BE ENCOUNTERED.

LAT...LON 3221 8737 3220 8733 3215 8727 3214 8725
      3210 8722 3208 8719 3205 8717 3205 8712
      3198 8715 3201 8746 3218 8753 3222 8753
      3223 8739

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 22, 12:14 PM CDTSpecial Marine WarningMOB91 min
Jul 22, 1:05 PM CDTSpecial Marine WarningMOB85 min
Jul 22, 2:24 PM CDTSpecial Marine WarningMOB96 min
Jul 22, 4:18 PM CDTSpecial Marine WarningMOB27 min
Jul 22, 4:59 PM CDTSpecial Marine WarningMOB91 min
Jul 22, 5:00 PM CDTSevere Thunderstorm WarningMOBBaldwin45 min
Jul 22, 5:23 PM CDTSpecial Marine WarningMOB37 min
Jul 22, 5:27 PM CDTSevere Thunderstorm WarningMOBMobile63 min
Jul 22, 5:33 PM CDTSevere Thunderstorm WarningMOBBaldwin42 min
Jul 22, 5:36 PM CDTSpecial Marine WarningMOB84 min
Jul 22, 6:02 PM CDTSevere Thunderstorm WarningMOBMobile58 min
Jul 22, 6:06 PM CDTSpecial Marine WarningMOB24 min
Jul 22, 6:30 PM CDTSpecial Marine WarningMOB30 min
Jul 22, 6:46 PM CDTSpecial Marine WarningMOB59 min
Jul 22, 6:58 PM CDTSpecial Marine WarningMOB47 min

Nearby

Flash Flood Warnings in Alabama, 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.