Alert archive / Alabama / Flash Flood Warnings in 2017

Flash Flood Warning 25, NWS Birmingham, AL

July 25, 2017Russell County, Alabama

NWS Birmingham, AL issued this flash flood warning at Jul 25, 2017, 9:40 AM CDT for Russell County, Alabama. It was in force for 2 hr. 3 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: Jul 25, 2017, 9:40 AM CDT (14:40 UTC)
Expired: Jul 25, 2017, 11:45 AM CDT
In force: 2 hr
Issued by: NWS Birmingham, AL
Area: Storm-based polygon
Flood severity: None

County Russell County, AL

The radar

The Maxwell AFB radar (KMXX), 78 km from the middle of the area, began a volume at 14:44 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
Jul 25, 9:50 AM CDT	FLASH FLOOD	1 W Phenix City, AL	WATER COVERING A PORTION OF CRAWFORD DR. ALSO WATER OVER THE ROAD IN THE 1300 BLOCK OF 14TH AVE.
Jul 25, 9:50 AM CDT	FLASH FLOOD	2 S Phenix City, AL	WATER COVERING A PORTION OF MEADOWLANE DRIVE.
Jul 25, 9:50 AM CDT	FLASH FLOOD	3 Wnw Phenix City, AL	WATER OVER THE ROAD NEAR THE INTERSECTION OF OPELIKA RD AND CUTRATE RD.

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, 2.7 hours before the alert went out and 125 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: 756 J/kg
Mixed-layer CIN: -49 J/kg
Mixed-layer LCL: 804 m above ground
0-6 km bulk shear: 7 kt
0-1 km storm-relative helicity: 8 m²/s²
0-3 km storm-relative helicity: 9 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

419 
WGUS54 KBMX 251440
FFWBMX
ALC113-251645-
/O.NEW.KBMX.FF.W.0025.170725T1440Z-170725T1645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Birmingham AL
940 AM CDT TUE JUL 25 2017

The National Weather Service in Birmingham has issued a

* Flash Flood Warning for...
  Eastern Russell County in southeastern Alabama...

* Until 1145 AM CDT

* At 939 AM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain continued to move across the warned area. Up to three 
  inches of rain have already fallen in some locations and another 
  one to two inches is possible during the next hour. Flash flooding 
  is expected to begin shortly...especially in low-lying flood prone 
  areas with poor drainage or near small creeks and streams.

* Some locations that will experience flooding include...
  Phenix City, Ladonia, Russell County Sports Complex, Seale,
  Crawford, Uchee Creek, Fort Mitchell, Ladonia Sports Complex, Fort
  Mitchell Activity Center, Phenix Drag Strip and Parkmanville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&

LAT...LON 3226 8489 3225 8492 3224 8491 3222 8493
      3222 8498 3220 8496 3218 8501 3215 8504
      3215 8518 3247 8519 3247 8506 3251 8506
      3251 8500 3246 8500 3242 8496 3241 8498
      3239 8497 3238 8499 3238 8497 3233 8501

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 25, 6:56 AM CDT	Areal Flood Advisory	BMX	Chambers, Tallapoosa	3 hr
Jul 25, 7:34 AM CDT	Flash Flood Warning	BMX	Chambers, Tallapoosa	3 hr
Jul 25, 7:55 AM CDT	Areal Flood Advisory	BMX	Lee, Russell	3 hr
Jul 25, 9:14 AM CDT	Areal Flood Advisory	BMX	Bullock, Coosa, Elmore, Macon, Montgomery	3 hr
Jul 25, 5:14 PM CDT	Special Weather Statement	BMX	Talladega	31 min
Jul 25, 5:48 PM CDT	Special Weather Statement	BMX	Autauga	27 min
Jul 25, 6:25 PM CDT	Special Weather Statement	BMX	Etowah	35 min

Nearby

Flash Flood Warnings in Alabama, 2017 Every flash flood warning in 2017

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.