Alert archive / Alabama / Flash Flood Warnings in 2015

Flash Flood Warning 13, NWS Birmingham, AL

December 24, 20154 counties in Alabama

NWS Birmingham, AL issued this flash flood warning at Dec 24, 2015, 7:40 AM CST for 4 counties in Alabama. It was in force for 3 hr. 8 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Dec 24, 2015, 7:40 AM CST (13:40 UTC)
Expired: Dec 24, 2015, 10:45 AM CST
In force: 3 hr
Issued by: NWS Birmingham, AL
Area: Storm-based polygon
Flood severity: None

Counties Barbour County, AL, Bullock County, AL, Pike County, AL, Russell County, AL

The radar

The Maxwell AFB radar (KMXX), 72 km from the middle of the area, began a volume at 13:41 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.

What was reported inside it

Time	Report	Where	Remark
Dec 24, 7:45 AM CST	FLASH FLOOD	3 Sse Pickett, AL	WATER COVERING BRIDGE ON HIGHWAY 239 NEAR COUNTY ROAD 27.
Dec 24, 7:45 AM CST	HEAVY RAIN 0	3 Sse Pickett, AL	WATER COVERING BRIDGE ON HIGHWAY 239 NEAR COUNTY ROAD 27.
Dec 24, 7:45 AM CST	HEAVY RAIN 0	Ssw Fort Mitchell Activ, AL	MINOR FLOODING, STANDING WATER, BRADLEY ROAD NEAR HIGHWAY 165.
Dec 24, 7:59 AM CST	FLASH FLOOD	4 Wnw Boot Hill, AL	GROUND EROSION CAUSE BY FLOODING, SINKHOLE HAS FORMED ON AL29N JUST ACROSS PIKE/BULLOCK COUNTY LINE-REROUTING TRAFFIC
Dec 24, 8:19 AM CST	FLOOD	1 Ssw Comer, AL	WATER FLOWING ACROSS THE BRIDGE ON CR 49. ROAD IS IMPASSABLE. CORRECTED FOR LOCATION.
Dec 24, 8:30 AM CST	FLOOD	20 Sw Inverness, AL	COUNTY ROAD 223 HAS FLOODED IN PIKE COUNTY, ROAD IS CONSIDERED IMPASSABLE
Dec 24, 8:32 AM CST	FLASH FLOOD	10 Nw Comer, AL	US HWY 82 CLOSED DUE TO FLASH FLOODING ON THE COUNTY LINE BETWEEN PIKE AND BARBOUR, TRAFFIC BEING REROUTED
Dec 24, 9:24 AM CST	FLASH FLOOD	5 Wsw Brundidge, AL	SEVERAL ROADS ARE FLOODED AND CLOSED. THESE INCLUDE CR 6647, CR 6622 AND CR 3319.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 1.7 hours before the alert went out and 153 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: 468 J/kg
Mixed-layer CIN: -144 J/kg
Mixed-layer LCL: 864 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 269 m²/s²
0-3 km storm-relative helicity: 321 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 8.3

Open this sounding in Storm Lab

The text

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

720 
WGUS54 KBMX 241340
FFWBMX
ALC005-011-109-113-241645-
/O.NEW.KBMX.FF.W.0013.151224T1340Z-151224T1645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
740 AM CST THU DEC 24 2015

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHERN PIKE COUNTY IN SOUTHEASTERN ALABAMA...
  RUSSELL COUNTY IN SOUTHEASTERN ALABAMA...
  SOUTHEASTERN BULLOCK COUNTY IN SOUTHEASTERN ALABAMA...
  BARBOUR COUNTY IN SOUTHEASTERN ALABAMA...

* UNTIL 1045 AM CST
    
* AT 739 AM CST...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. UP TO 5 INCHES OF RAIN HAS
  FALLEN. FLASH FLOODING IS OCCURRING.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  TROY...BRUNDIDGE...CLIO...MIDWAY...GOSHEN...CLAYTON...LOUISVILLE...
  BANKS...WHITE OAK...PICKETT...TROY UNIVERSITY...OSCO...DOSTER...
  BARBOUR COUNTY PUBLIC LAKE DAM...SPRING HILL...ANTIOCH...LAKEPOINT
  RESORT STATE PARK...TYLER CROSSROADS...GAINO AND BOOT HILL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

STAY AWAY OR BE SWEPT AWAY. RIVER BANKS AND CULVERTS CAN BECOME
UNSTABLE AND UNSAFE.

&&

LAT...LON 3225 8492 3222 8493 3222 8497 3220 8496
      3213 8506 3209 8505 3197 8506 3162 8558
      3162 8587 3170 8615 3173 8614 3247 8500
      3244 8497 3238 8499 3238 8497 3233 8501
      3226 8489

$$

75

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 23, 9:33 PM CST	River Flood Warning	BMX	Montgomery	4 days
Dec 23, 11:15 PM CST	Areal Flood Advisory	BMX	Barbour, Bullock, Pike, Russell	3 hr
Dec 24, 12:41 AM CST	Flash Flood Warning	BMX	Barbour, Pike	3 hr
Dec 24, 3:37 AM CST	Tornado Warning	BMX	Barbour	24 min
Dec 24, 4:31 AM CST	Tornado Warning	BMX	Barbour, Bullock	59 min
Dec 24, 4:50 AM CST	Areal Flood Advisory	BMX	Barbour, Bullock, Pike, Russell	3 hr
Dec 24, 4:54 AM CST	Areal Flood Advisory	BMX	Calhoun, Clay, Cleburne, Coosa, Randolph, Talladega	3 hr
Dec 24, 7:12 AM CST	Flash Flood Warning	BMX	Randolph	3 hr
Dec 24, 7:55 AM CST	Areal Flood Warning	BMX	Calhoun, Cherokee, Clay, Cleburne, Randolph, Talladega	3 hr
Dec 24, 8:03 AM CST	Flash Flood Warning	BMX	Chambers	6 hr
Dec 24, 8:40 AM CST	Tornado Warning	BMX	Barbour	35 min
Dec 24, 8:53 AM CST	Flash Flood Warning	BMX	Elmore, Lee, Macon, Montgomery, Tallapoosa	4 hr
Dec 24, 10:11 AM CST	Areal Flood Warning	BMX	Randolph	64 min
Dec 24, 10:17 AM CST	Flash Flood Warning	BMX	Bullock, Chambers, Lee, Macon, Montgomery, Pike and 1 more	3 hr
Dec 24, 10:35 AM CST	Severe Thunderstorm Warning	BMX	Chambers, Lee	14 min
Dec 24, 10:42 AM CST	Flash Flood Warning	BMX	Barbour, Bullock, Pike, Russell	3 hr
Dec 24, 12:59 PM CST	Flash Flood Warning	BMX	Barbour, Bullock, Chambers, Elmore, Lee, Lowndes and 5 more	12 hr
Dec 24, 2:49 PM CST	River Flood Warning	BMX	Elmore, Montgomery	11 days

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.