Alert archive / Alabama / Special Weather Statements in 2017

Special Weather Statement, NWS Mobile, AL

August 15, 2017Clarke County, Alabama

NWS Mobile, AL issued this special weather statement at Aug 15, 2017, 3:59 PM CDT for Clarke County, Alabama. It was in force for 61 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 15, 2017, 3:59 PM CDT (20:59 UTC)
Expired: Aug 15, 2017, 5:00 PM CDT
In force: 61 min
Issued by: NWS Mobile, AL

County Clarke County, AL

The radar

The Mobile radar (KMOB), 137 km from the middle of the area, began a volume at 21:02 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 12:00Z, 9.0 hours before the alert went out and 173 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: 907 J/kg
Mixed-layer CIN: -60 J/kg
Mixed-layer LCL: 760 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 47 m²/s²
0-3 km storm-relative helicity: 48 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.9

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Mobile, AL wrote its last area forecast discussion before this special weather statement went out at Aug 15, 3:46 PM CDT, 13 minutes earlier.

Area forecast discussion, Aug 15, 3:46 PM CDT, 13 minutes before

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Hazardous weather outlook, Aug 15, 5:00 AM CDT, 10 hours 59 minutes before

Hazardous Weather Outlook
National Weather Service Mobile AL
500 AM CDT Tue Aug 15 2017

ALZ051>060-261>266-FLZ201>206-MSZ067-075-076-078-079-161000-
Choctaw-Washington-Clarke-Wilcox-Monroe-Conecuh-Butler-Crenshaw-
Escambia-Covington-Mobile Inland-Baldwin Inland-Mobile Central-
Baldwin Central-Mobile Coastal-Baldwin Coastal-Escambia Inland-
Escambia Coastal-Santa Rosa Inland-Santa Rosa Coastal-
Okaloosa Inland-Okaloosa Coastal-Wayne-Perry-Greene-Stone-George-
500 AM CDT Tue Aug 15 2017

This Hazardous Weather Outlook is for portions of south central
Alabama...southwest Alabama...northwest Florida and southeast
Mississippi.

.DAY ONE...Today and Tonight

Heat indices will range from around 100 to 105 degrees today.

Scattered to numerous showers and thunderstorms will develop
across the region today, beginning near the coast this morning and
then developing inland through the afternoon. The stronger storms
that develop will be capable of producing torrential downpours,
which could result in localized flooding of urban and low lying
areas. Frequent cloud to ground lightning strikes will accompany
most of the storms, and and brief strong and gusty winds will
also be possible with some of the stronger storms.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Afternoon heat indices are expected to range from 101 to 106
degrees throughout the week.

Scattered to numerous showers and thunderstorms will continue
through the period, with locally heavy rain...frequent cloud to
ground lightning and gusty straight line winds possible with the
stronger thunderstorms throughout the week. Torrential downpours
could result in localized flooding.

.SPOTTER INFORMATION STATEMENT...

Activation of SkyWarn Severe Storm Spotter networks is not
expected through Monday.

GMZ630>635-650-655-670-675-161000-
Northern Mobile Bay-Southern Mobile Bay-Mississippi Sound-
Perdido Bay-Pensacola Bay System-Choctawhatchee Bay-
Coastal waters from Pensacola FL to Pascagoula MS out 20 NM-
Coastal waters from Destin to Pensacola FL out 20 NM-
Waters from Pensacola FL to Pascagoula MS from 20 to 60 NM-
Waters from Destin to Pensacola FL from 20 to 60 NM-
500 AM CDT Tue Aug 15 2017

This Hazardous Weather Outlook is for portions of the coastal
waters of Alabama and northwest Florida.

.DAY ONE...Today and Tonight

Winds and seas will be higher in and around isolated to scattered
showers and thunderstorms. Showers and storm most numerous over
the coastal waters tonight.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Winds and seas will be higher in and around isolated to scattered
showers and thunderstorms. Showers and storm will be most numerous
over the coastal waters during the overnight hours.

In the hours before

Special weather statement, Aug 15, 1:18 PM CDT, 2 hours 41 minutes before

Special Weather Statement
National Weather Service Mobile AL
118 PM CDT TUE AUG 15 2017

ALZ060-FLZ205-151915-
Covington AL-Okaloosa Inland FL-
118 PM CDT TUE AUG 15 2017

...A STRONG THUNDERSTORM WILL AFFECT THE FOLLOWING COUNTIES...
SOUTHERN COVINGTON AND NORTHEASTERN OKALOOSA COUNTIES UNTIL 215 PM
CDT...

At 116 PM CDT, clusters of strong thunderstorms were located across
southern Covington County, near the Alabama and Florida state line.
One cluster was located 7 miles northwest of Laurel Hill, or 13
miles west of Florala. Another cluster of storms was located
between Stedman and Florala. Movement was east at 20 mph.

Winds in excess of 40 mph will be possible with this storm.

Locations impacted include...
Florala, Laurel Hill and Lockhart.

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.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

Additional statements will be issued as conditions warrant.

&&

LAT...LON 3099 8639 3071 8639 3077 8656 3086 8666
      3094 8672 3100 8674 3100 8669 3103 8670
      3117 8670 3122 8619 3100 8619
TIME...MOT...LOC 1816Z 266DEG 15KT 3103 8655

Butts

Special weather statement, Aug 15, 1:54 PM CDT, 2 hours 5 minutes before

Special Weather Statement
National Weather Service Mobile AL
154 PM CDT TUE AUG 15 2017

ALZ261-151930-
Mobile Inland AL-
154 PM CDT TUE AUG 15 2017

...A STRONG THUNDERSTORM WILL AFFECT THE FOLLOWING COUNTIES...
NORTHERN MOBILE COUNTY UNTIL 230 PM CDT...

At 152 PM CDT, a cluster of strong thunderstorms was located near
Gulfcrest, or 9 miles south of Citronelle, moving east at 30 mph.

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

Locations impacted include...
Saraland, Satsuma, Citronelle, Creola, Chunchula, Gulfcrest, Axis,
Mount Vernon, I65 And AL 158 and Movico.

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.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

Additional statements will be issued as conditions warrant.

&&

LAT...LON 3080 8802 3079 8807 3088 8842 3111 8843
      3111 8833 3114 8833 3114 8802 3117 8799
      3115 8797 3115 8794 3112 8794 3109 8797
      3107 8796 3107 8795 3078 8801
TIME...MOT...LOC 1852Z 267DEG 26KT 3095 8821

Butts

Special weather statement, Aug 15, 2:19 PM CDT, 1 hour 40 minutes before

Special Weather Statement
National Weather Service Mobile AL
219 PM CDT TUE AUG 15 2017

ALZ057-058-060-152015-
Butler AL-Covington AL-Crenshaw AL-
219 PM CDT TUE AUG 15 2017

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT THE FOLLOWING
COUNTIES...EASTERN BUTLER...CRENSHAW AND NORTHEASTERN COVINGTON
COUNTIES UNTIL 315 PM CDT...

At 218 PM CDT, strong thunderstorms were located along a line
extending from near Georgiana, to near Dozier, to 9 miles south of
Brantley, to 6 miles southeast of Opp, and moving north at 15 mph.

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

Locations impacted include...
Greenville, Opp, Luverne, Georgiana, Brantley, Rutledge, Dozier and
Glenwood.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

Additional statements will be issued as conditions warrant.

&&

LAT...LON 3153 8620 3107 8619 3131 8635 3164 8675
      3196 8667 3197 8645 3179 8628 3179 8615
      3166 8615 3162 8618 3162 8615 3154 8614
TIME...MOT...LOC 1918Z 200DEG 12KT 3165 8667 3146 8642 3145 8630 3120
8620

Butts

Special weather statement, Aug 15, 3:11 PM CDT, 48 minutes before

Special Weather Statement
National Weather Service Mobile AL
311 PM CDT TUE AUG 15 2017

ALZ054-152045-
Wilcox AL-
311 PM CDT TUE AUG 15 2017

...A STRONG THUNDERSTORM WILL AFFECT THE FOLLOWING COUNTIES...
NORTHWESTERN WILCOX COUNTY UNTIL 345 PM CDT...

At 310 PM CDT, the strong thunderstorm was located between Lamison
and Prairie, or 15 miles northwest of Camden, moving east at 20 mph.

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

Locations impacted include...
Camden and Dannelly Reservoir.

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.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

Additional statements will be issued as conditions warrant.

&&

LAT...LON 3227 8744 3225 8742 3224 8739 3220 8736
      3220 8733 3214 8728 3214 8725 3212 8726
      3212 8725 3210 8723 3208 8719 3207 8719
      3206 8718 3195 8717 3206 8759 3213 8758
      3213 8752 3227 8752
TIME...MOT...LOC 2010Z 278DEG 16KT 3214 8749

Butts

Special weather statement, Aug 15, 3:50 PM CDT, 9 minutes before

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Special weather statement, Aug 15, 3:59 PM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 15, 1:18 PM CDT	Special Weather Statement	MOB	Covington	57 min
Aug 15, 1:54 PM CDT	Special Weather Statement	MOB	Mobile	36 min
Aug 15, 2:15 PM CDT	Special Marine Warning	MOB		60 min
Aug 15, 2:19 PM CDT	Special Weather Statement	MOB	Butler, Crenshaw	56 min
Aug 15, 2:55 PM CDT	Areal Flood Advisory	MOB	Butler, Covington, Crenshaw	3 hr
Aug 15, 3:11 PM CDT	Special Weather Statement	MOB	Wilcox	34 min
Aug 15, 3:50 PM CDT	Special Weather Statement	MOB	Wilcox	55 min
Aug 15, 5:18 PM CDT	Special Weather Statement	MOB	Choctaw	42 min
Aug 14, 8:09 PM CDT	Special Weather Statement	MOB	Okaloosa	36 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.