Alert archive / Alabama / Flash Flood Warnings in 2018

Flash Flood Warning 7, NWS Birmingham, AL

May 23, 2018Russell County, Alabama

NWS Birmingham, AL issued this flash flood warning at May 23, 2018, 4:41 AM CDT for Russell County, Alabama. It was in force for 3 hr. 1 report 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
May 23, 2018, 4:41 AM CDT (09:41 UTC)
Expired
May 23, 2018, 7:45 AM CDT
In force
3 hr
Issued by
NWS Birmingham, AL
Area
Storm-based polygon
Flood severity
None

County Russell County, AL

The radar

The Maxwell AFB radar (KMXX), 71 km from the middle of the area, began a volume at 09:42 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

TimeReportWhereRemark
May 23, 4:43 AM CDTFLASH FLOOD3 Nw Phenix City, ALLAKEWOOD DRIVE AND BRIDGEWATER DRIVE BRIDGES OVER HOLLAND CREEK OVER-TOPPED DUE TO HEAVY RAINFALL UPSTREAM.

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 00:00Z, 9.7 hours before the alert went out and 113 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-pSkew-T log-p diagram, Peachtre/Fal Fld, GA at 00:00Z on 2018-05-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 183 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Peachtre/Fal Fld, GA at 00:00Z on 2018-05-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -40 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
183 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
590 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
-40 m²/s²
0-3 km storm-relative helicity
-14 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

956 
WGUS54 KBMX 230941
FFWBMX
ALC113-231245-
/O.NEW.KBMX.FF.W.0007.180523T0941Z-180523T1245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Birmingham AL
441 AM CDT WED MAY 23 2018

The National Weather Service in Birmingham has issued a

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

* Until 745 AM CDT.

* At 438 AM CDT, emergency management reported flash flooding along 
  Holland Creek in north Phenix City with water flowing over 
  Lakewood Drive and Bridgewater Drive due to heavy rainfall 
  upstream. Flash flooding will be possible along creeks and small 
  streams in the warned area.

* Some locations that will experience flooding include...
  Phenix City, Ladonia, Ladonia Sports Complex and Phenix Drag Strip.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3241 8498 3242 8521 3247 8521 3247 8506
      3251 8506 3251 8500 3248 8499 3247 8500
      3245 8499 3244 8497 3242 8496

$$

32/Davis

The office that day

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

IssuedProductOfficeCountiesLasted
May 23, 12:22 AM CDTAreal Flood AdvisoryBMXLee3 hr
May 23, 12:59 AM CDTFlash Flood WarningBMXLee3 hr
May 23, 1:27 AM CDTAreal Flood AdvisoryBMXRussell3 hr
May 23, 3:12 AM CDTFlash Flood WarningBMXLee6 hr
May 23, 7:03 AM CDTDense Fog AdvisoryBMXBlount, Calhoun, Chambers, Cherokee, Chilton, Clay and 14 more117 min
May 23, 7:37 AM CDTFlash Flood WarningBMXRussell3 hr
May 23, 9:08 AM CDTAreal Flood WarningBMXLee3 hr
May 23, 10:51 AM CDTAreal Flood AdvisoryBMXAutauga, Chilton, Elmore114 min
May 23, 12:38 PM CDTSpecial Weather StatementBMXGreene37 min
May 23, 12:43 PM CDTSpecial Weather StatementBMXLowndes32 min
May 23, 1:04 PM CDTAreal Flood AdvisoryBMXGreene, Hale116 min
May 23, 1:24 PM CDTSpecial Weather StatementBMXHale36 min
May 23, 1:25 PM CDTSpecial Weather StatementBMXSumter35 min
May 23, 1:46 PM CDTSpecial Weather StatementBMXTuscaloosa29 min
May 23, 1:54 PM CDTAreal Flood AdvisoryBMXHale, Tuscaloosa2 hr
May 23, 2:14 PM CDTAreal Flood AdvisoryBMXTuscaloosa2 hr
May 23, 2:21 PM CDTSpecial Weather StatementBMXTuscaloosa39 min
May 23, 2:49 PM CDTSpecial Weather StatementBMXTuscaloosa41 min
May 23, 3:42 PM CDTSpecial Weather StatementBMXMacon33 min
May 23, 4:32 PM CDTSpecial Weather StatementBMXElmore28 min
May 23, 4:34 PM CDTSpecial Weather StatementBMXMacon26 min

Nearby

Flash Flood Warnings in Alabama, 2018Every flash flood warning in 2018

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.