Alert archive / Alabama / Flash Flood Warnings in 2013

Flash Flood Warning 1, NWS Mobile, AL

January 30, 2013Choctaw County, Clarke County, Washington County, Alabama

NWS Mobile, AL issued this flash flood warning at Jan 30, 2013, 10:54 AM CST for Choctaw County, Clarke County, Washington County, Alabama. It was in force for 6 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: Jan 30, 2013, 10:54 AM CST (16:54 UTC)
Expired: Jan 30, 2013, 4:45 PM CST
In force: 6 hr
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Flood severity: None

Counties Choctaw County, AL, Clarke County, AL, Washington County, AL

The radar

The Mobile radar (KMOB), 121 km from the middle of the area, began a volume at 16:55 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, 4.9 hours before the alert went out and 197 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: 916 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 468 m above ground
0-6 km bulk shear: 62 kt
0-1 km storm-relative helicity: 296 m²/s²
0-3 km storm-relative helicity: 364 m²/s²
Significant tornado parameter: 1.9
Supercell composite: 9.6

Open this sounding in Storm Lab

The text

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

852 
WGUS54 KMOB 301654
FFWMOB
ALC023-025-129-302245-
/O.NEW.KMOB.FF.W.0001.130130T1654Z-130130T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1054 AM CST WED JAN 30 2013

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN CHOCTAW COUNTY IN SOUTHWEST ALABAMA...
  NORTHWESTERN CLARKE COUNTY IN SOUTHWEST ALABAMA...
  NORTH CENTRAL WASHINGTON COUNTY IN SOUTHWEST ALABAMA...

* UNTIL 445 PM CST

* AT 1046 AM CST...RADAR ESTIMATES THAT BETWEEN 3 AND 5 INCHES
  OF RAIN HAS FALLEN OVER THE WARNED SINCE EARLY MORNING. AN
  ADDITIONAL ONE TO TWO INCHES OF RAIN COULD FALL BEFORE THE RAIN
  ENDS DURING THE EARLY AFTERNOON. THIS WILL LIKELY CAUSE FLASH
  FLOODING IN THE WARNED AREA.

* LOCATIONS IMPACTED INCLUDE...
  COFFEEVILLE...        MILLRY...             CHATOM...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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 3199 8773 3195 8772 3162 8801 3146 8823
      3146 8834 3157 8837 3200 8808

$$

1 follow-up statement

001 
WGUS74 KMOB 301924
FFSMOB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
124 PM CST WED JAN 30 2013

ALC023-025-129-302245-
/O.CON.KMOB.FF.W.0001.000000T0000Z-130130T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHOCTAW AL-WASHINGTON AL-CLARKE AL-
124 PM CST WED JAN 30 2013

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 445 PM CST FOR
NORTHWESTERN CLARKE...NORTH CENTRAL WASHINGTON AND SOUTHEASTERN
CHOCTAW COUNTIES...

AT 114 PM CST...RAINFALL WILL TAPER FROM THE WEST OVER THE WARNED 
AREA THROUGH 230 PM CST. 

IMPACT WISE...ADDITIONAL RAINFALL RUNOFF WILL CONTINUE TO LAG THE 
RAINFALL ENDING THROUGH THE AFTERNOON. EXPECT SMALL FEEDER CREEKS 
AND STREAMS TO FLOW OUT OF THEIR BANKS AS THE TOMBIGBEE RIVER IS NOW 
RISING AGAIN. ALSO EXPECT WATER TO FLOW OVER SOME ROADWAYS 
ESPECIALLY FROM YARBO TO COFFEEVILLE TO ABOUT 10 MILES NORTHWEST OF 
MCENTYRE ALABAMA.

LOCATIONS IMPACTED INCLUDE...
  COFFEEVILLE...        MILLRY...             CHATOM...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3199 8773 3195 8772 3162 8801 3146 8823
      3146 8834 3157 8837 3200 8808

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 29, 8:20 PM CST	Wind Advisory	MOB	Butler, Choctaw, Clarke, Conecuh, Covington, Crenshaw and 4 more	22 hr
Jan 30, 12:48 AM CST	Marine Dense Fog Advisory	MOB		9 hr
Jan 30, 3:42 AM CST	Gale Warning	MOB		20 hr
Jan 30, 3:42 AM CST	Small Craft Advisory	MOB		32 hr
Jan 30, 7:29 AM CST	Severe Thunderstorm Warning	MOB	Choctaw	46 min
Jan 30, 9:03 AM CST	Severe Thunderstorm Warning	MOB	Choctaw, Clarke, Washington	42 min
Jan 30, 10:18 AM CST	Areal Flood Advisory	MOB	Choctaw, Clarke, Mobile, Washington, Wilcox	74 days
Jan 30, 11:24 AM CST	Special Marine Warning	MOB		51 min
Jan 30, 12:36 PM CST	Areal Flood Advisory	MOB	Baldwin, Clarke, Escambia, Mobile, Monroe, Washington and 1 more	3 hr
Jan 30, 1:18 PM CST	Special Marine Warning	MOB		42 min
Jan 30, 1:19 PM CST	River Flood Warning	MOB	Choctaw, Clarke, Washington	4 days
Jan 30, 1:19 PM CST	River Flood Warning	MOB	Choctaw, Clarke, Washington	4 days
Jan 30, 1:59 PM CST	Special Marine Warning	MOB		91 min

Nearby

Flash Flood Warnings in Alabama, 2013 Every 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.