Alert archive / Alabama / Special Weather Statements in 2017

Special Weather Statement, NWS Mobile, AL

June 29, 2017Conecuh County, Covington County, Alabama

NWS Mobile, AL issued this special weather statement at Jun 29, 2017, 7:21 PM CDT for Conecuh County, Covington County, Alabama. It was in force for 39 min. 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 29, 2017, 7:21 PM CDT (00:21 UTC)
Expired
Jun 29, 2017, 8:00 PM CDT
In force
39 min
Issued by
NWS Mobile, AL

Counties Conecuh County, AL, Covington County, AL

The radar

The Eglin Afb radar (KEVX), 110 km from the middle of the area, began a volume at 00:21 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

Birmingham, AL (KBMX), launched 00:00Z, 0.4 hours before the alert went out and 209 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 00:00Z on 2017-06-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 113 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 00:00Z on 2017-06-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 90 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
113 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
517 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
90 m²/s²
0-3 km storm-relative helicity
63 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

Open this sounding in Storm Lab

The text

As transmitted.

829 
WWUS84 KMOB 300021
SPSMOB

Special Weather Statement
National Weather Service Mobile AL
721 PM CDT THU JUN 29 2017
 
ALZ056-057-059-060-FLZ203-205-300100-
Conecuh AL-Butler AL-Covington AL-Escambia AL-Okaloosa Inland FL-
Santa Rosa Inland FL-
721 PM CDT THU JUN 29 2017

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT THE FOLLOWING
COUNTIES...SOUTHWESTERN BUTLER...EASTERN ESCAMBIA...SOUTHEASTERN
CONECUH...WESTERN COVINGTON...NORTHWESTERN OKALOOSA AND NORTHEASTERN
SANTA ROSA COUNTIES UNTIL 800 PM CDT...

At 720 PM CDT, the strong thunderstorms were located along a line
extending from near I65 And US 84 to near Castleberry to near
Riverview to 6 miles southeast of Jay,and moving east at 25 mph.

Winds in excess of 30 mph will be possible with these storms.

Locations impacted include...
Andalusia, Brewton, Evergreen, Georgiana, McKenzie, River Falls,
Castleberry, Red Level, Heath, Gantt and I65 And US 84.

LAT...LON 3096 8657 3087 8714 3102 8705 3128 8703
      3145 8714 3172 8663 3156 8650 3153 8650
      3153 8647 3146 8642 3123 8641
TIME...MOT...LOC 0020Z 248DEG 23KT 3145 8705 3130 8696 3105 8698 3090
8707

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 29, 8:09 PM CDTSpecial Weather StatementMOBCovington, Crenshaw66 min
Jun 29, 11:08 PM CDTSpecial Marine WarningMOB37 min
Jun 29, 11:32 PM CDTTornado WarningMOBMobile28 min
Jun 30, 12:03 AM CDTSpecial Weather StatementMOBMobile57 min
Jun 30, 12:45 AM CDTFlash Flood WarningMOBMobile4 hr
Jun 30, 5:28 AM CDTRiver Flood WarningMOBCovington, Escambia35 hr
Jun 30, 1:15 PM CDTSpecial Weather StatementMOBCovington45 min
Jun 30, 3:21 PM CDTSpecial Weather StatementMOBWashington24 min
Jun 30, 3:30 PM CDTSpecial Weather StatementMOBMonroe30 min
Jun 30, 5:25 PM CDTSpecial Weather StatementMOBChoctaw, Clarke65 min
Jun 30, 5:39 PM CDTSpecial Weather StatementMOBConecuh36 min
Jun 30, 6:30 PM CDTAreal Flood AdvisoryMOBClarke, Washington2 hr
Jun 30, 12:11 AM CDTFlash Flood WarningMOBSanta Rosa6 hr
Jun 30, 12:32 AM CDTSpecial Weather StatementMOBSanta Rosa58 min
Jun 30, 1:17 AM CDTFlash Flood WarningMOBOkaloosa5 hr
Jun 30, 3:47 AM CDTFlash Flood WarningMOBSanta Rosa2 hr
Jun 30, 6:06 AM CDTAreal Flood WarningMOBOkaloosa, Santa Rosa12 hr
Jun 30, 9:02 AM CDTRiver Flood WarningMOBOkaloosa58 hr
Jun 30, 5:18 PM CDTSpecial Weather StatementMOBGreene42 min
Jun 30, 6:41 PM CDTAreal Flood AdvisoryMOBGreene, Perry2 hr

Nearby

Special Weather Statements in Alabama, 2017Every special weather statement 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.