Alert archive / Alabama / Flash Flood Warnings in 2017

Flash Flood Warning 39, NWS Mobile, AL

June 22, 2017Choctaw County, Washington County, Alabama; Wayne County, Mississippi

NWS Mobile, AL issued this flash flood warning at Jun 22, 2017, 8:03 AM CDT for Choctaw County, Washington County, Alabama; Wayne County, Mississippi. It was in force for 6 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
Jun 22, 2017, 8:03 AM CDT (13:03 UTC)
Expired
Jun 22, 2017, 2:00 PM CDT
In force
6 hr
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Flood severity
None

Counties Choctaw County, AL, Washington County, AL, Wayne County, MS

The radar

The Mobile radar (KMOB), 141 km from the middle of the area, began a volume at 13:06 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, 11:23 AM CDTFLASH FLOODEse Robinson Junction, MSCOUNTY EM REPORTS NUMEROUS ROADS ACROSS THE COUNTY ARE CLOSED DUE TO FLASH FLOODING

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

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 1.1 hours before the alert went out and 162 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, Jackson, MS at 12:00Z on 2017-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 294 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, Jackson, MS at 12:00Z on 2017-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 190 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
294 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
614 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
190 m²/s²
0-3 km storm-relative helicity
197 m²/s²
Significant tornado parameter
0.2
Supercell composite
2.9

Open this sounding in Storm Lab

The text

As transmitted.

022 
WGUS54 KMOB 221303
FFWMOB
ALC023-129-MSC153-221900-
/O.NEW.KMOB.FF.W.0039.170622T1303Z-170622T1900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

The National Weather Service in Mobile has issued a

* Flash Flood Warning for...
  Western Choctaw County in southwestern Alabama...
  Northwestern Washington County in southwestern Alabama...
  Eastern Wayne County in southeastern Mississippi...

* Until 200 PM CDT

* At 800 AM CDT, Doppler radar indicated an axis of heavy rain 
  repeatedly moving across the warned area. Radar estimates that 2 
  inches of rain has already fallen over portions of the area. With 
  the rain persisting, another 2 to 4 inches of rain in the next few 
  hours is likely. Flash flooding is expected to begin shortly. 
  Portions of Highway 84 and Highway 45 will be impacted. 

* Some locations that will experience flooding include...
  Waynesboro, Lisman, State Line, Buckatunna, Silas, Gilbertown and
  Toxey.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3231 8819 3143 8839 3144 8869 3186 8862
      3190 8847 3231 8842

$$
1 follow-up statement
118 
WGUS74 KMOB 221824
FFSMOB

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

ALC023-129-MSC153-221900-
/O.CON.KMOB.FF.W.0039.000000T0000Z-170622T1900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Choctaw AL-Washington AL-Wayne MS-
124 PM CDT THU JUN 22 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 200 PM CDT FOR
WESTERN CHOCTAW...NORTHWESTERN WASHINGTON AND EASTERN WAYNE
COUNTIES...

At 121 PM CDT, Doppler radar indicated thunderstorms producing heavy 
rain redeveloping south of the warned area.  Flash flooding is in 
progress throughout scattered portions of 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. A flash flood 
warning could soon be re-issued.

Doppler radar indicated heavy rain across the warned
area.  Flash flooding is expected to begin shortly.

Some locations that will experience flooding include...
Waynesboro, Lisman, State Line, Buckatunna, Silas, Gilbertown and
Toxey.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3231 8819 3143 8839 3144 8869 3186 8862
      3190 8847 3231 8842

$$

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, 9:39 AM CDTSpecial Marine WarningMOB96 min
Jun 22, 10:14 AM CDTFlash Flood WarningMOBChoctaw, Clarke, Washington, Wilcox6 hr
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
Jun 22, 3:50 AM CDTSpecial Weather StatementMOBPerry40 min
Jun 22, 5:13 AM CDTFlash Flood WarningMOBGeorge, Greene, Perry6 hr
Jun 22, 11:06 AM CDTFlash Flood WarningMOBGeorge, Greene6 hr
Jun 22, 4:02 PM CDTFlash Flood WarningMOBGeorge6 hr

Nearby

Flash Flood Warnings in Alabama, 2017Flash Flood Warnings in Mississippi, 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.