Alert archive / Alabama / Flash Flood Warnings in 2017

Flash Flood Warning 52, NWS Mobile, AL

June 23, 2017Clarke County, Wilcox County, Alabama

NWS Mobile, AL issued this flash flood warning at Jun 23, 2017, 7:07 PM CDT for Clarke County, Wilcox County, Alabama. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jun 23, 2017, 7:07 PM CDT (00:07 UTC)
Expired
Jun 24, 2017, 1:00 AM CDT
In force
6 hr
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Flood severity
None

Counties Clarke County, AL, Wilcox County, AL

The radar

The Mobile radar (KMOB), 149 km from the middle of the area, began a volume at 00:10 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.

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 0.1 hours before the alert went out and 233 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 00:00Z on 2017-06-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1118 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Jackson, MS at 00:00Z on 2017-06-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 131 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
1118 J/kg
Mixed-layer CIN
-35 J/kg
Mixed-layer LCL
866 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
131 m²/s²
0-3 km storm-relative helicity
98 m²/s²
Significant tornado parameter
0.0
Supercell composite
4.0

Open this sounding in Storm Lab

The text

As transmitted.

182 
WGUS54 KMOB 240007
FFWMOB
ALC025-131-240600-
/O.NEW.KMOB.FF.W.0052.170624T0007Z-170624T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mobile AL
707 PM CDT FRI JUN 23 2017

The National Weather Service in Mobile has issued a

* Flash Flood Warning for...
  Northeastern Clarke County in southwestern Alabama...
  Southwestern Wilcox County in south central Alabama...

* Until 100 AM CDT

* At 707 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Flash flooding is expected. 
  
* Some locations that will experience flooding include...
  Thomasville, Grove Hill, Pine Hill, Fulton and Yellow Bluff. 

LAT...LON 3195 8742 3163 8786 3174 8802 3201 8764
      3200 8763 3202 8762 3206 8756

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 23, 7:04 PM CDTSpecial Weather StatementMOBButler, Crenshaw, Monroe86 min
Jun 23, 8:22 PM CDTFlash Flood WatchMOBMobile18 hr
Jun 23, 11:26 PM CDTAreal Flood WarningMOBChoctaw, Clarke, Washington, Wilcox6 hr
Jun 24, 4:51 AM CDTAreal Flood AdvisoryMOBBaldwin, Mobile3 hr
Jun 24, 6:31 AM CDTAreal Flood AdvisoryMOBMobile3 hr

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.