Alert archive / Alabama / Flash Flood Warnings in 2012

Flash Flood Warning 37, NWS Mobile, AL

September 4, 2012Butler County, Conecuh County, Monroe County, Alabama

NWS Mobile, AL issued this flash flood warning at Sep 4, 2012, 11:40 AM CDT for Butler County, Conecuh County, Monroe 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: Sep 4, 2012, 11:40 AM CDT (16:40 UTC)
Expired: Sep 4, 2012, 2:30 PM CDT
In force: 3 hr
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Flood severity: None

Counties Butler County, AL, Conecuh County, AL, Monroe County, AL

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 4.7 hours before the alert went out and 160 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: 1659 J/kg
Mixed-layer CIN: -23 J/kg
Mixed-layer LCL: 531 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 24 m²/s²
0-3 km storm-relative helicity: 26 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.

892 
WGUS54 KMOB 041640
FFWMOB
ALC013-035-099-041930-
/O.NEW.KMOB.FF.W.0037.120904T1640Z-120904T1930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1140 AM CDT TUE SEP 4 2012

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WESTERN BUTLER COUNTY IN SOUTH CENTRAL ALABAMA...
  NORTHERN CONECUH COUNTY IN SOUTH CENTRAL ALABAMA...
  NORTHEASTERN MONROE COUNTY IN SOUTH CENTRAL ALABAMA...

* UNTIL 230 PM CDT

* AT 1130 AM CDT...VERY HEAVY RAINFALL IS EXPECTED TO PERSIST ACROSS
  THE WARNED AREA THROUGH EARLY THIS AFTERNOON. RADAR ESTIMATES THAT
  2 TO 4 INCHES OF RAIN HAS OCCURRED OVER PORTIONS OF THE WARNED  
  AREA...WITH EVEN HIGHER TOTALS OVER EXTREME NORTHWEST BUTLER 
  COUNTY. ADDITIONAL RAINFALL ACCUMULATIONS OF 1 TO 2 INCHES PER 
  HOUR WILL LEAD TO THE LIKELIHOOD OF FLASH FLOODING IN THE WARNED
  AREA.

* LOCATIONS IMPACTED INCLUDE...
  MCKENZIE...           I65 AND CR 7...       I65 AND AL 106...
  GEORGIANA...          BEATRICE...           I65 AND CR 29...

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!

IF YOU ARE IN DANGER FROM THE FLOOD WATERS AND NEED RESCUE ASSISTANCE
CALL 911. TO REPORT FLOODING TO THE NATIONAL WEATHER SERVICE CALL
(800) 284-9059.

&&

LAT...LON 3185 8683 3167 8675 3151 8671 3150 8717
      3183 8730 3183 8691 3196 8690

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 4, 6:52 AM CDT	Areal Flood Advisory	MOB	Butler, Crenshaw	3 hr
Sep 4, 7:20 AM CDT	Areal Flood Advisory	MOB	Covington	3 hr
Sep 4, 7:30 AM CDT	Flash Flood Warning	MOB	Butler, Crenshaw	6 hr
Sep 4, 8:12 AM CDT	Flash Flood Watch	MOB	Butler, Clarke, Conecuh, Covington, Crenshaw, Escambia and 2 more	25 hr
Sep 4, 8:26 AM CDT	Flash Flood Warning	MOB	Butler, Covington, Crenshaw	6 hr
Sep 4, 9:10 AM CDT	Flash Flood Warning	MOB	Wilcox	6 hr
Sep 4, 10:13 AM CDT	Areal Flood Advisory	MOB	Clarke, Conecuh, Monroe	3 hr
Sep 4, 1:33 PM CDT	Areal Flood Warning	MOB	Butler, Crenshaw	3 hr
Sep 4, 2:14 PM CDT	Areal Flood Warning	MOB	Butler, Conecuh, Covington, Crenshaw, Monroe, Wilcox	2 hr
Sep 4, 3:34 PM CDT	Flash Flood Warning	MOB	Baldwin, Clarke, Conecuh, Escambia, Monroe	6 hr
Sep 4, 3:44 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Escambia	61 min
Sep 4, 4:26 PM CDT	Areal Flood Warning	MOB	Conecuh, Monroe	8 hr
Sep 4, 4:44 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin	61 min
Sep 4, 4:59 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Escambia	61 min
Sep 4, 5:51 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin	54 min
Sep 4, 5:56 PM CDT	Severe Thunderstorm Warning	MOB	Choctaw, Clarke, Monroe, Washington, Wilcox	64 min
Sep 4, 6:37 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin	30 min
Sep 4, 6:49 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Choctaw, Clarke, Escambia, Mobile, Monroe and 2 more	34 min

Nearby

Flash Flood Warnings in Alabama, 2012 Every flash flood warning in 2012

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.