Alert archive / Alabama / Flash Flood Warnings in 2018

Flash Flood Warning 8, NWS Mobile, AL

April 14, 2018Clarke County, Washington County, Wilcox County, Alabama

NWS Mobile, AL issued this flash flood warning at Apr 14, 2018, 6:14 PM CDT for Clarke County, Washington County, Wilcox County, Alabama. It was in force for 6 hr. 12 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
Apr 14, 2018, 6:14 PM CDT (23:14 UTC)
Expired
Apr 15, 2018, 12:15 AM CDT
In force
6 hr
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Flood severity
None

Counties Clarke County, AL, Washington County, AL, Wilcox County, AL

The radar

The Birmingham radar (KBMX), 153 km from the middle of the area, began a volume at 23:18 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
Apr 14, 6:47 PM CDTFLASH FLOODJackson, ALCOUNTY EM REPORTS SEVERAL LOCATIONS WITH WATER COVERING THE ROAD.
Apr 14, 6:55 PM CDTFLASH FLOODGrove Hill, ALCOUNTY EM REPORTED WATER OVER ROADS IN SEVERAL LOCATIONS.
Apr 14, 7:48 PM CDTFLASH FLOODFulton, ALCOUNTY EM REPORTED SEVERAL LOACTIONS IN FULTON WITH WATER OVER THE ROAD. PARTS OF HWY 43 CLOSED.
Apr 14, 7:51 PM CDTFLASH FLOODGrove Hill, ALCOUNTY EM REPORTED SEVERAL AREAS IN TOWN WITH WATER OVER THE ROAD. WATER ENTERING A HOUSE ON CLAY STREET. 7.5 INCHES OF RAIN REPORTED SINCE 3 PM.
Apr 14, 8:55 PM CDTFLASH FLOOD7 Nne Jackson, ALTODDTOWN ROAD IS CLOSED DUE TO WATER OVER THE ROAD.
Apr 14, 8:55 PM CDTFLASH FLOODGrove Hill, ALOLD HIGHWAY 5 SOUTH IN GROVE HILL IS CLOSED DUE TO FLOODING.
Apr 14, 9:09 PM CDTFLASH FLOODPine Hill, ALCOUNTY EM REPORTS WATER COVERING THE ROAD IN PINE HILL ALONG HIGHWAY 5
Apr 14, 9:11 PM CDTFLASH FLOOD1 W Fulton, ALHIGHWAY 178 WEST OF FULTON IS CLOSED DUE TO WATER OVER THE ROADWAY IN THREE PLACES
Apr 14, 9:18 PM CDTFLASH FLOOD2 Ssw Fulton, ALMULTIPLE WATER RESCUES IN PROGRESS ALONG FLORAL CREEK ROAD
Apr 14, 9:29 PM CDTFLASH FLOOD5 S Thomasville, ALTWO VEHICLE WRECK WITH AT LEAST ONE CAR SUBMERGED WITH ENTRAPPED OCCUPANTS ON HIGHWAY 43 NEAR THE NORTH CLARKE INDUSTRIAL PARK
Apr 14, 10:18 PM CDTFLASH FLOOD3 S Thomasville, ALCOUNTY EM REPORTS 6 FEET OF WATER OVER HIGHWAY 43 NEAR BASSETT CREEK. MULTIPLE VEHICLES SUBMERGED INCLUDING AN 18 WHEELER. HIGHWAY 43 IS CLOSED IN BOTH DIRECTIONS
Apr 14, 10:23 PM CDTFLASH FLOOD1 W Fulton, ALVEHICLE SUBMERGED WITH TRAPPED OCCUPANT AT FLORAL CREEK ROAD NEAR FULTON.

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

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 11.2 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-pSkew-T log-p diagram, Birmingham, AL at 12:00Z on 2018-04-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 224 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, Birmingham, AL at 12:00Z on 2018-04-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 275 square meters per square second.193958Sfc1 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
224 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
560 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
275 m²/s²
0-3 km storm-relative helicity
324 m²/s²
Significant tornado parameter
0.3
Supercell composite
3.7

Open this sounding in Storm Lab

The text

As transmitted.

894 
WGUS54 KMOB 142314
FFWMOB
ALC025-129-131-150515-
/O.NEW.KMOB.FF.W.0008.180414T2314Z-180415T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mobile AL
614 PM CDT SAT APR 14 2018

The National Weather Service in Mobile has issued a

* Flash Flood Warning for...
  Southeastern Washington County in southwestern Alabama...
  Central Clarke County in southwestern Alabama...
  Western Wilcox County in south central Alabama...

* Until 1215 AM CDT Sunday.

* At 614 PM CDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Up to three inches of rain have
  already fallen. Flash flooding is expected to begin shortly.

* Some locations that will experience flooding include...
  Jackson, Thomasville, Grove Hill, Whatley, Pine Hill, Fulton,
  McIntosh, Yellow Bluff.

LAT...LON 3227 8744 3225 8742 3224 8739 3220 8736
      3220 8733 3217 8730 3125 8791 3124 8804
      3141 8800 3144 8793 3199 8769 3199 8767
      3201 8762 3213 8762 3213 8752 3226 8752
      3227 8751

$$
2 follow-up statements
983 
WGUS74 KMOB 150224
FFSMOB

Flash Flood Statement
National Weather Service Mobile AL
924 PM CDT SAT APR 14 2018

ALC025-129-131-150515-
/O.CON.KMOB.FF.W.0008.000000T0000Z-180415T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Washington AL-Clarke AL-Wilcox AL-
924 PM CDT SAT APR 14 2018

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1215 AM CDT FOR
SOUTHEASTERN WASHINGTON...CENTRAL CLARKE AND WESTERN WILCOX
COUNTIES...

At 921 PM CDT, At least three water rescues have had to be performed 
near Grove Hill and near Fulton.  DO NOT DRIVE INTO WATER COVERED 
ROADS!  While doppler radar indicated that the heavy rain has ended, 
light to moderate rain will continue for a couple more hours.  Flash 
flooding will continue over the warned area.

Some locations that will experience flooding include...
Jackson, Thomasville, Grove Hill, Whatley, Pine Hill, Fulton,
McIntosh, Yellow Bluff and Dannelly Reservoir.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

&&

LAT...LON 3227 8744 3225 8742 3224 8739 3220 8736
      3220 8733 3217 8730 3125 8791 3124 8804
      3141 8800 3144 8793 3199 8769 3199 8767
      3201 8762 3213 8762 3213 8752 3226 8752
      3227 8751

$$
271 
WGUS74 KMOB 150321
FFSMOB

Flash Flood Statement
National Weather Service Mobile AL
1021 PM CDT SAT APR 14 2018

ALC025-129-131-150515-
/O.CON.KMOB.FF.W.0008.000000T0000Z-180415T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Washington AL-Clarke AL-Wilcox AL-
1021 PM CDT SAT APR 14 2018

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1215 AM CDT FOR
SOUTHEASTERN WASHINGTON...CENTRAL CLARKE AND WESTERN WILCOX
COUNTIES...

At 1017 PM CDT, Clarke County Emergency Management reported that 
Highway 43 near Bassett Creek, or about 3 miles south of 
Thomasville, is impassable in both directions with 6 feet of water 
over the road.  Multiple vehicles are submerged.  Do not attempt to 
travel over ANY roadways that are covered with water. The Flash 
Flood Warning will remain in effect due to multiple reports of water 
over roads in the warned area.

Some locations that will experience flooding include...
Jackson, Thomasville, Grove Hill, Whatley, Pine Hill, Fulton,
McIntosh, Yellow Bluff and Dannelly Reservoir.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

&&

LAT...LON 3227 8744 3225 8742 3224 8739 3220 8736
      3220 8733 3217 8730 3125 8791 3124 8804
      3141 8800 3144 8793 3199 8769 3199 8767
      3201 8762 3213 8762 3213 8752 3226 8752
      3227 8751

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 14, 3:19 AM CDTWind AdvisoryMOBBaldwin, Butler, Choctaw, Clarke, Conecuh, Covington and 6 more18 hr
Apr 14, 4:09 AM CDTGale WarningMOB18 hr
Apr 14, 4:09 AM CDTSmall Craft AdvisoryMOB63 hr
Apr 14, 11:59 AM CDTSevere Thunderstorm WarningMOBChoctaw, Clarke, Washington61 min
Apr 14, 1:07 PM CDTSpecial Weather StatementMOBChoctaw53 min
Apr 14, 2:00 PM CDTAreal Flood AdvisoryMOBChoctaw, Clarke, Washington3 hr
Apr 14, 2:35 PM CDTFlash Flood WarningMOBChoctaw, Washington6 hr
Apr 14, 3:46 PM CDTFlash Flood WarningMOBClarke, Washington6 hr
Apr 14, 4:53 PM CDTFlash Flood WarningMOBWashington6 hr
Apr 14, 5:34 PM CDTAreal Flood AdvisoryMOBClarke, Washington, Wilcox3 hr
Apr 14, 6:57 PM CDTSevere Thunderstorm WarningMOBMobile20 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.