Alert archive / Alabama / Special Weather Statements in 2017

Special Weather Statement, NWS Mobile, AL

August 4, 2017Baldwin County, Alabama

NWS Mobile, AL issued this special weather statement at Aug 4, 2017, 8:02 AM CDT for Baldwin County, Alabama. It was in force for 58 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: Aug 4, 2017, 8:02 AM CDT (13:02 UTC)
Expired: Aug 4, 2017, 9:00 AM CDT
In force: 58 min
Issued by: NWS Mobile, AL

County Baldwin County, AL

The radar

The Mobile radar (KMOB), 56 km from the middle of the area, began a volume at 13:03 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

Slidell Radar S, LA (KSIL), launched 12:00Z, 1.0 hours before the alert went out and 181 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1794 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 644 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 124 m²/s²
0-3 km storm-relative helicity: 89 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

828 
WWUS84 KMOB 041302
SPSMOB

Special Weather Statement
National Weather Service Mobile AL
802 AM CDT FRI AUG 4 2017
 
ALZ264-266-041400-
Baldwin Coastal AL-Baldwin Central AL-
802 AM CDT FRI AUG 4 2017

...A STRONG THUNDERSTORM WILL AFFECT THE FOLLOWING COUNTIES...
SOUTHWESTERN BALDWIN COUNTY UNTIL 900 AM CDT...

At 801 AM CDT, the strong thunderstorm was located 7 miles southwest
of Magnolia Springs, or 8 miles south of Point Clear, moving east at
15 mph.

Winds in excess of 30 mph will be possible with this storm.

Locations impacted include...
Gulf Shores, Foley, Magnolia Springs, Bon Secour and Elberta. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3027 8797 3045 8796 3048 8759 3021 8760
TIME...MOT...LOC 1301Z 271DEG 12KT 3036 8789 

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 4, 6:03 AM CDT	Special Marine Warning	MOB		57 min
Aug 4, 6:22 AM CDT	Special Marine Warning	MOB		23 min
Aug 4, 7:20 AM CDT	Special Marine Warning	MOB		55 min
Aug 4, 7:39 AM CDT	Special Marine Warning	MOB		96 min
Aug 4, 8:22 AM CDT	Areal Flood Advisory	MOB	Baldwin	3 hr
Aug 4, 8:38 AM CDT	Flash Flood Warning	MOB	Baldwin	3 hr
Aug 4, 9:14 AM CDT	Special Marine Warning	MOB		2 hr
Aug 4, 11:23 AM CDT	Areal Flood Advisory	MOB	Baldwin	3 hr
Aug 4, 12:22 PM CDT	Special Marine Warning	MOB		83 min
Aug 4, 1:17 PM CDT	Special Marine Warning	MOB		88 min
Aug 4, 5:09 PM CDT	Areal Flood Advisory	MOB	Baldwin	2 hr
Aug 4, 5:15 PM CDT	Areal Flood Advisory	MOB	Mobile	2 hr
Aug 4, 5:29 PM CDT	Areal Flood Advisory	MOB	Mobile	2 hr
Aug 4, 5:37 PM CDT	Special Weather Statement	MOB	Mobile	23 min
Aug 4, 5:42 PM CDT	Flash Flood Warning	MOB	Mobile	2 hr
Aug 4, 6:09 PM CDT	Special Weather Statement	MOB	Escambia	51 min
Aug 4, 5:20 AM CDT	Special Weather Statement	MOB	Escambia, Okaloosa, Santa Rosa	40 min
Aug 4, 6:13 AM CDT	Special Weather Statement	MOB	Escambia, Okaloosa, Santa Rosa	92 min
Aug 4, 7:55 AM CDT	Special Weather Statement	MOB	Okaloosa	65 min

Nearby

Special Weather Statements in Alabama, 2017 Every 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.