Alert archive / Alabama / Flash Flood Warnings in 2017

Flash Flood Warning 40, NWS Mobile, AL

June 22, 20174 counties in Alabama

NWS Mobile, AL issued this flash flood warning at Jun 22, 2017, 10:14 AM CDT for 4 counties in Alabama. It was in force for 6 hr. 2 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
Jun 22, 2017, 10:14 AM CDT (15:14 UTC)
Expired
Jun 22, 2017, 4:15 PM CDT
In force
6 hr
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Flood severity
None

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

The radar

The Mobile radar (KMOB), 139 km from the middle of the area, began a volume at 15:14 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
Jun 22, 12:30 PM CDTFLASH FLOOD1 E Coffeeville, ALDAISY ROAD WASHED OUT. BEVERLY ROAD WASHED OUT FROM POND DAM THAT BREECHED.
Jun 22, 2:30 PM CDTFLASH FLOODGilbertown, ALMOSLEY BRIDGE ROAD IS CLOSED DUE TO RUSHING WATER OVER THE ROAD.

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, 3.2 hours before the alert went out and 174 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 2017-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 602 joules per kilogram.LCLEL10008507005003002001001 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 2017-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 306 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
602 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
450 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
306 m²/s²
0-3 km storm-relative helicity
324 m²/s²
Significant tornado parameter
0.6
Supercell composite
6.5

Open this sounding in Storm Lab

The text

As transmitted.

737 
WGUS54 KMOB 221514
FFWMOB
ALC023-025-129-131-222115-
/O.NEW.KMOB.FF.W.0040.170622T1514Z-170622T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mobile AL
1014 AM CDT THU JUN 22 2017

The National Weather Service in Mobile has issued a

* Flash Flood Warning for...
  Choctaw County in southwestern Alabama...
  Northern Washington County in southwestern Alabama...
  Clarke County in southwestern Alabama...
  Southwestern Wilcox County in south central Alabama...

* Until 415 PM CDT Thursday

* At 1013 AM CDT, Doppler radar indicated heavy rain across the
  warned area. Up to two inches of rain have already fallen. Flash
  flooding is expected to begin shortly.

* Some locations that will experience flooding include...
  Jackson, Thomasville, Butler, Grove Hill, Chatom, Saint Stephens,
  Wagarville, Leroy, Whatley, Pine Hill, Lisman, Millry, Silas,
  Coffeeville, Pennington, Fulton, Gilbertown, Yellow Bluff, Toxey
  and Shawnee.

LAT...LON 3228 8802 3218 8801 3206 8812 3201 8812
      3199 8810 3200 8743 3183 8746 3183 8750
      3181 8752 3170 8752 3170 8757 3155 8757
      3152 8762 3148 8756 3142 8760 3143 8841
      3231 8827 3231 8798

$$
2 follow-up statements
622 
WGUS74 KMOB 221821
FFSMOB

Flash Flood Statement
National Weather Service Mobile AL
121 PM CDT THU JUN 22 2017

ALC023-025-129-131-222115-
/O.CON.KMOB.FF.W.0040.000000T0000Z-170622T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Choctaw AL-Washington AL-Clarke AL-Wilcox AL-
121 PM CDT THU JUN 22 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 415 PM CDT FOR
CHOCTAW...NORTHERN WASHINGTON...CLARKE AND SOUTHWESTERN WILCOX
COUNTIES...

At 120 PM CDT, Doppler radar indicated thunderstorms producing heavy 
rain moving north across the warned area.  Flash flooding is in 
progress over scattered areas throughout the warned area. The 
potential is moderately elevated for additional flooding areas to 
develop through the course of this afternoon as individual cells 
continually move over the same rain-soaked locations.

Some locations that will experience flooding include...
Jackson, Thomasville, Butler, Grove Hill, Chatom, Saint Stephens,
Wagarville, Leroy, Whatley, Pine Hill, Lisman, Millry, Silas,
Coffeeville, Pennington, Fulton, Gilbertown, Yellow Bluff, Toxey and
Shawnee.

LAT...LON 3228 8802 3218 8801 3206 8812 3201 8812
      3199 8810 3200 8743 3183 8746 3183 8750
      3181 8752 3170 8752 3170 8757 3155 8757
      3152 8762 3148 8756 3142 8760 3143 8841
      3231 8827 3231 8798

$$
399 
WGUS74 KMOB 222004
FFSMOB

Flash Flood Statement
National Weather Service Mobile AL
304 PM CDT THU JUN 22 2017

ALC023-025-129-131-222012-
/O.CAN.KMOB.FF.W.0040.000000T0000Z-170622T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Choctaw AL-Washington AL-Clarke AL-Wilcox AL-
304 PM CDT THU JUN 22 2017

...THE FLASH FLOOD WARNING FOR CHOCTAW...NORTHERN WASHINGTON...CLARKE
AND SOUTHWESTERN WILCOX COUNTIES IS CANCELLED...

The redevelopment of showers and thunderstorms may necessitate the 
issuance of additional Flood Warnings through early evening. 
Continue to heed any remaining road closures.

LAT...LON 3228 8802 3218 8801 3206 8812 3201 8812
      3199 8810 3200 8743 3183 8746 3183 8750
      3181 8752 3170 8752 3170 8757 3155 8757
      3152 8762 3148 8756 3142 8760 3143 8841
      3231 8827 3231 8798

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 21, 7:03 PM CDTSpecial Weather StatementMOBConecuh, Covington, Escambia, Monroe57 min
Jun 21, 7:16 PM CDTTornado Warning Tornado observedMOBCovington, Crenshaw19 min
Jun 21, 7:41 PM CDTSevere Thunderstorm WarningMOBEscambia39 min
Jun 21, 8:51 PM CDTTornado WarningMOBCovington24 min
Jun 21, 9:14 PM CDTRiver Flood WarningMOBBaldwin, Mobile4 days
Jun 21, 9:14 PM CDTRiver Flood WarningMOBChoctaw, Clarke, Washington10 days
Jun 21, 9:14 PM CDTRiver Flood WarningMOBChoctaw, Clarke, Washington14 days
Jun 21, 10:36 PM CDTFlash Flood WarningMOBButler, Covington, Crenshaw6 hr
Jun 22, 12:33 AM CDTSpecial Marine WarningMOB57 min
Jun 22, 1:14 AM CDTTornado WarningMOBCovington46 min
Jun 22, 1:25 AM CDTSpecial Marine WarningMOB65 min
Jun 22, 1:27 AM CDTSpecial Marine WarningMOB33 min
Jun 22, 1:44 AM CDTSevere Thunderstorm WarningMOBBaldwin41 min
Jun 22, 2:24 AM CDTFlash Flood WarningMOBCovington, Escambia6 hr
Jun 22, 3:28 AM CDTSpecial Marine WarningMOB32 min
Jun 22, 4:33 AM CDTFlash Flood WarningMOBButler, Conecuh, Covington, Crenshaw6 hr
Jun 22, 5:17 AM CDTSpecial Weather StatementMOBCrenshaw28 min
Jun 22, 7:40 AM CDTRiver Flood WarningMOBBaldwin21 days
Jun 22, 8:03 AM CDTFlash Flood WarningMOBChoctaw, Washington6 hr
Jun 22, 9:39 AM CDTSpecial Marine WarningMOB96 min
Jun 22, 10:19 AM CDTSpecial Marine WarningMOB116 min
Jun 22, 10:48 AM CDTSpecial Weather StatementMOBMobile27 min
Jun 22, 10:51 AM CDTFlash Flood WarningMOBBaldwin, Butler, Clarke, Conecuh, Covington, Escambia and 4 more6 hr
Jun 22, 11:05 AM CDTSpecial Weather StatementMOBMobile40 min
Jun 22, 11:16 AM CDTSpecial Marine WarningMOB89 min
Jun 22, 12:12 PM CDTSpecial Marine WarningMOB93 min
Jun 22, 1:44 PM CDTFlash Flood WarningMOBButler, Crenshaw6 hr
Jun 22, 2:15 PM CDTCoastal Flood AdvisoryMOBBaldwin, Mobile15 hr
Jun 22, 3:56 PM CDTSpecial Marine WarningMOB64 min
Jun 22, 5:57 PM CDTSpecial Weather StatementMOBChoctaw, Washington48 min

Nearby

Flash Flood Warnings in Alabama, 2017Every 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.