Alert archive / Alabama / Flash Flood Warnings in 2015

Flash Flood Warning 26, NWS Mobile, AL

December 24, 2015Monroe County, Alabama

NWS Mobile, AL issued this flash flood warning at Dec 24, 2015, 2:49 PM CST for Monroe County, Alabama. It was in force for 4 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 24, 2015, 2:49 PM CST (20:49 UTC)
Expired: Dec 24, 2015, 6:45 PM CST
In force: 4 hr
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Flood severity: None

County Monroe County, AL

The radar

The Mobile radar (KMOB), 123 km from the middle of the area, began a volume at 20:53 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.

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 8.8 hours before the alert went out and 262 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: 2217 J/kg
Mixed-layer CIN: -13 J/kg
Mixed-layer LCL: 558 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 106 m²/s²
0-3 km storm-relative helicity: 191 m²/s²
Significant tornado parameter: 1.9
Supercell composite: 11.9

Open this sounding in Storm Lab

The text

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

343 
WGUS54 KMOB 242049
FFWMOB
ALC099-250045-
/O.NEW.KMOB.FF.W.0026.151224T2049Z-151225T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
249 PM CST THU DEC 24 2015

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  MONROE COUNTY IN SOUTH CENTRAL ALABAMA...

* UNTIL 645 PM CST

* AT 247 PM CST...ADDITIONAL HEAVY RAIN HAS DEVELOPED OVER MONROE
  COUNTY AND WILL BE CAPABLE OF 1 TO 2 INCHES OF RAINFALL IN A SHORT
  DURATION. SINCE THIS HEAVY RAIN WILL FALL ON EXTREMELY SATURATED
  GROUND...AREAS OF FLASH FLOODING ARE LIKELY IN THE WARNED AREA.

* LOCATIONS IMPACTED INCLUDE...
  MONROEVILLE...         FRISCO CITY...         EXCEL...
  VREDENBURGH...         BEATRICE...            MEGARGEL...
  URIAH...               PETERMAN...            

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 3182 8691 3171 8701 3171 8705 3167 8706
      3164 8714 3155 8716 3127 8742 3126 8748
      3123 8756 3128 8769 3130 8771 3130 8775
      3143 8766 3141 8761 3144 8757 3148 8756
      3150 8760 3183 8736

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 23, 7:29 PM CST	River Flood Warning	MOB	Baldwin	43 hr
Dec 23, 9:05 PM CST	Special Weather Statement	MOB	Covington	25 min
Dec 23, 11:00 PM CST	Areal Flood Warning	MOB	Covington, Crenshaw	12 hr
Dec 24, 5:22 AM CST	Areal Flood Advisory	MOB	Mobile	113 min
Dec 24, 6:53 AM CST	Areal Flood Advisory	MOB	Baldwin, Escambia	3 hr
Dec 24, 7:30 AM CST	Special Weather Statement	MOB	Conecuh	60 min
Dec 24, 8:04 AM CST	Areal Flood Advisory	MOB	Escambia	3 hr
Dec 24, 8:27 AM CST	Areal Flood Advisory	MOB	Conecuh	3 hr
Dec 24, 8:46 AM CST	River Flood Warning	MOB	Covington, Escambia	61 hr
Dec 24, 9:21 AM CST	River Flood Warning	MOB	Covington	4 days
Dec 24, 9:28 AM CST	Flash Flood Warning	MOB	Conecuh, Escambia	4 hr
Dec 24, 9:55 AM CST	Areal Flood Advisory	MOB	Monroe	3 hr
Dec 24, 10:02 AM CST	Areal Flood Advisory	MOB	Butler	3 hr
Dec 24, 11:48 AM CST	Areal Flood Warning	MOB	Monroe	6 hr
Dec 24, 12:27 PM CST	Dense Fog Advisory	MOB	Baldwin, Mobile	21 hr
Dec 24, 1:04 PM CST	Areal Flood Advisory	MOB	Covington, Crenshaw	3 hr
Dec 24, 1:22 PM CST	Special Weather Statement	MOB	Covington	38 min
Dec 24, 1:28 PM CST	Areal Flood Warning	MOB	Conecuh, Escambia	6 hr
Dec 24, 1:50 PM CST	Flash Flood Warning	MOB	Covington, Crenshaw	3 hr
Dec 24, 2:18 PM CST	Areal Flood Warning	MOB	Butler	6 hr
Dec 24, 3:07 PM CST	Flash Flood Warning	MOB	Wilcox	4 hr
Dec 24, 4:44 PM CST	Flash Flood Warning	MOB	Covington, Crenshaw	3 hr
Dec 24, 5:22 PM CST	Flash Flood Warning	MOB	Conecuh	3 hr

Nearby

Flash Flood Warnings in Alabama, 2015 Every flash flood warning in 2015

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.