Alert archive / Alabama / Special Weather Statements in 2016

Special Weather Statement, NWS Mobile, AL

December 13, 2016Mobile County, Alabama

NWS Mobile, AL issued this special weather statement at Dec 13, 2016, 4:49 PM CST for Mobile County, Alabama. It was in force for 41 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: Dec 13, 2016, 4:49 PM CST (22:49 UTC)
Expired: Dec 13, 2016, 5:30 PM CST
In force: 41 min
Issued by: NWS Mobile, AL

County Mobile County, AL

The radar

The Mobile radar (KMOB), 13 km from the middle of the area, began a volume at 22:52 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, 10.8 hours before the alert went out and 152 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: 555 J/kg
Mixed-layer CIN: -31 J/kg
Mixed-layer LCL: 519 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 180 m²/s²
0-3 km storm-relative helicity: 225 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.6

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 Dec 13, 3:53 PM CST, 56 minutes earlier.

Area forecast discussion, Dec 13, 3:53 PM CST, 56 minutes before

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Hazardous weather outlook, Dec 13, 5:51 AM CST, 10 hours 58 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE MOBILE AL
551 AM CST TUE DEC 13 2016

ALZ051>060-261>266-FLZ201>206-MSZ067-075-076-078-079-141200-
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-
551 AM CST TUE DEC 13 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL
ALABAMA...SOUTHWEST ALABAMA...NORTHWEST FLORIDA AND SOUTHEAST
MISSISSIPPI.

.DAY ONE...TODAY AND TONIGHT

WIDESPREAD DENSE FOG WILL CONTINUE OVER MUCH OF THE FORECAST AREA
THROUGH MID MORNING TODAY. FOG...POSSIBLY DENSE AT TIMES...WILL
REDEVELOP THIS EVENING AND OVERNIGHT.

THERE IS A MODERATE RISK FOR RIP CURRENTS ALONG THE GULF BEACHES OF
ALABAMA AND NORTHWEST FLORIDA THROUGH TONIGHT.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

THERE IS A MODERATE RISK FOR RIP CURRENTS ALONG THE GULF BEACHES OF
ALABAMA AND NORTHWEST FLORIDA THROUGH WEDNESDAY.

.SPOTTER INFORMATION STATEMENT...

ACTIVATION OF SKYWARN SEVERE STORM SPOTTER NETWORKS IS NOT
EXPECTED THROUGH MONDAY.

GMZ630>635-650-655-670-675-141200-
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-
551 AM CST TUE DEC 13 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF THE COASTAL
WATERS OF ALABAMA AND NORTHWEST FLORIDA.

.DAY ONE...TODAY AND TONIGHT

WIDESPREAD DENSE FOG WILL CONTINUE OVER MOST INLAND BAYS AND SOUNDS
THROUGH MID TO LATE MORNING TODAY. FOG...POSSIBLY DENSE AT
TIMES...WILL REDEVELOP THIS EVENING AND OVERNIGHT.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

HAZARDOUS CONDITIONS FOR SMALL CRAFT WILL BE POSSIBLE AHEAD AND IN
THE WAKE OF A STRONG COLD FRONT THIS WEEKEND AND EARLY NEST WEEK.

In the hours before

Special weather statement, Dec 13, 2:17 PM CST, 2 hours 32 minutes before

Special Weather Statement
National Weather Service Mobile AL
217 PM CST TUE DEC 13 2016

ALZ052-053-261-262-MSZ076-132100-
Mobile Inland AL-Clarke AL-Washington AL-Baldwin Inland AL-Greene MS-
217 PM CST TUE DEC 13 2016

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT THE FOLLOWING
COUNTIES...NORTHWESTERN BALDWIN...NORTHERN MOBILE...SOUTHERN
WASHINGTON...SOUTH CENTRAL CLARKE AND SOUTHEASTERN GREENE COUNTIES
UNTIL 300 PM CST...

At 216 PM CST, Strong thunderstorms were located along a line
extending from near Tibbie to Leakesville,and moving east at 35 mph.

Winds in excess of 40 mph and hail up to the size of dimes will be
possible with these storms.

Locations impacted include...
Citronelle, Leakesville, Deer Park, Calvert, Mount Vernon, McIntosh
and Movico.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3112 8871 3136 8823 3134 8773 3133 8774
      3134 8774 3134 8778 3133 8779 3131 8778
      3130 8777 3130 8771 3125 8766 3124 8762
      3123 8762 3097 8795
TIME...MOT...LOC 2016Z 281DEG 30KT 3132 8823 3115 8856

Butts

Special weather statement, Dec 13, 2:58 PM CST, 1 hour 51 minutes before

Special Weather Statement
National Weather Service Mobile AL
258 PM CST TUE DEC 13 2016

ALZ052-053-055-056-059-261-262-MSZ079-132145-
Monroe AL-Mobile Inland AL-Clarke AL-Escambia AL-Conecuh AL-
Washington AL-Baldwin Inland AL-George MS-
258 PM CST TUE DEC 13 2016

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT THE FOLLOWING
COUNTIES...SOUTHWESTERN CONECUH...NORTHWESTERN BALDWIN...NORTHERN
MOBILE...SOUTHWESTERN MONROE...SOUTHEASTERN WASHINGTON...WESTERN
ESCAMBIA...SOUTH CENTRAL CLARKE AND NORTHEASTERN GEORGE COUNTIES
UNTIL 345 PM CST...

At 258 PM CST, the strong thunderstorms were located along a line
extending from 15 miles southeast of Jackson to 9 miles west of
Gulfcrest, and moving east at 40 mph.

Winds in excess of 40 mph will be possible with these storms.

Locations impacted include...
Saraland, Bay Minette, Satsuma, Citronelle, Creola, Chunchula,
Stockton, McCullough, Gulfcrest, Axis, Uriah, Mount Vernon, Calvert,
Castleberry, Poarch Creek Reservation, I65 And AL 21, I65 And AL 113,
Movico, I65 And CR 1 and I65 And AL 225.

LAT...LON 3097 8852 3100 8847 3100 8843 3102 8843
      3137 8775 3133 8695 3079 8799
TIME...MOT...LOC 2058Z 285DEG 35KT 3132 8776 3100 8839

Special weather statement, Dec 13, 4:49 PM CST, 0 minutes before

Special Weather Statement
National Weather Service Mobile AL
449 PM CST TUE DEC 13 2016

ALZ263-264-132330-
Baldwin Central AL-Mobile Central AL-
449 PM CST TUE DEC 13 2016

...A STRONG THUNDERSTORM WILL AFFECT THE FOLLOWING COUNTIES...WEST
CENTRAL BALDWIN AND WEST CENTRAL MOBILE COUNTIES UNTIL 530 PM CST...

At 449 PM CST, the strong thunderstorm was located over Big Point, or
8 miles northeast of Escatawpa, moving east at 45 mph.

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

Locations impacted include...
Midtown Mobile, Downtown Mobile, Prichard, Daphne, Tillmans Corner,
Fairhope, Theodore, Spanish Fort, northeastern Grand Bay, Mobile
Regional Airport and I10 And I65.

LAT...LON 3070 8841 3079 8784 3053 8779 3051 8810
      3052 8810 3052 8820 3051 8824 3050 8840
TIME...MOT...LOC 2249Z 262DEG 37KT 3059 8846

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 12, 7:29 PM CST	Marine Dense Fog Advisory	MOB		17 hr
Dec 12, 8:50 PM CST	Dense Fog Advisory	MOB	Baldwin, Clarke, Conecuh, Covington, Escambia, Mobile and 2 more	13 hr
Dec 13, 2:17 PM CST	Special Weather Statement	MOB	Washington	43 min
Dec 13, 2:58 PM CST	Special Weather Statement	MOB	Baldwin	47 min
Dec 13, 5:20 PM CST	Special Weather Statement	MOB	Mobile	25 min

Nearby

Special Weather Statements in Alabama, 2016 Every special weather statement in 2016

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.