Alert archive / Alabama / Special Weather Statements in 2017

Special Weather Statement, NWS Mobile, AL

July 11, 2017Escambia County, Alabama

NWS Mobile, AL issued this special weather statement at Jul 11, 2017, 1:06 PM CDT for Escambia 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
Jul 11, 2017, 1:06 PM CDT (18:06 UTC)
Expired
Jul 11, 2017, 1:45 PM CDT
In force
39 min
Issued by
NWS Mobile, AL

County Escambia County, AL

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 6.1 hours before the alert went out and 251 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 12:00Z on 2017-07-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1383 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, Birmingham, AL at 12:00Z on 2017-07-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -12 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
1383 J/kg
Mixed-layer CIN
-32 J/kg
Mixed-layer LCL
725 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
-12 m²/s²
0-3 km storm-relative helicity
-20 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 Jul 11, 7:04 AM CDT, 6 hours 2 minutes earlier.

Area forecast discussion, Jul 11, 7:04 AM CDT, 6 hours 2 minutes before
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Hazardous weather outlook, Jul 11, 5:00 AM CDT, 8 hours 6 minutes before
Hazardous Weather Outlook
National Weather Service Mobile AL
500 AM CDT Tue Jul 11 2017

ALZ051>060-261>266-FLZ201>206-MSZ067-075-076-078-079-121000-
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 Jul 11 2017

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

.DAY ONE...Today and Tonight

Scattered showers and thunderstorms are expected across much of
the region again today. A few of the stronger storms that develop
will be capable of producing locally strong wind gusts, frequent
lightning strikes and locally heavy rainfall.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

There will be a continued chance of showers and thunderstorms
each day through the period. A few of the stronger storms will be
capable of producing brief strong wind gusts, frequent lightning
strikes and locally heavy rains.

.SPOTTER INFORMATION STATEMENT...

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

GMZ630>635-650-655-670-675-121000-
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 Jul 11 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 locally higher near isolated to scattered
showers and thunderstorms. Frequent lightning will be likely in
and in and near storms. Isolated waterspouts will also be possible.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Winds and seas will be locally higher near isolated to scattered
storms through the period. Frequent lightning will be likely in
and near the storms.

In the hours before

Local storm report, Jul 11, 10:59 AM CDT, 2 hours 7 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOBILE AL
1059 AM CDT TUE JUL 11 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0705 PM     LIGHTNING        5 W BAKER               30.80N 86.77W
07/10/2017                   OKALOOSA           FL   LAW ENFORCEMENT

            *** 1 FATAL *** A 35 YEAR OLD MALE CAMPER DIED AFTER
            BEING STRUCK BY LIGHTNING AT THE WILDERNESS LANDING
            CAMPGROUND ALONG THE BLACKWATER RIVER 5 MILES WEST OF
            BAKER, FL.

&&

MB
Special weather statement, Jul 11, 1:06 PM CDT, 0 minutes before
Special Weather Statement
National Weather Service Mobile AL
106 PM CDT TUE JUL 11 2017

ALZ059-FLZ203-205-111845-
Escambia AL-Okaloosa Inland FL-Santa Rosa Inland FL-
106 PM CDT TUE JUL 11 2017

...A STRONG THUNDERSTORM WILL AFFECT THE FOLLOWING COUNTIES...
SOUTHEASTERN ESCAMBIA...NORTHWESTERN OKALOOSA AND NORTHEASTERN SANTA
ROSA COUNTIES UNTIL 145 PM CDT...

At 105 PM CDT, the strong thunderstorm was located 12 miles northwest
of Baker, or 18 miles southeast of Brewton, moving northeast at 10
mph.

Half inch hail and winds in excess of 40 mph will be possible with
this storm.

This storm will remain over mainly rural areas of southeastern
Escambia...northwestern Okaloosa and northeastern Santa Rosa
Counties.

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.

&&

LAT...LON 3076 8681 3093 8696 3118 8688 3099 8668
TIME...MOT...LOC 1805Z 220DEG 10KT 3094 8682

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 10, 7:06 PM CDTSpecial Weather StatementMOBMonroe24 min
Jul 10, 7:30 PM CDTSpecial Weather StatementMOBMonroe30 min
Jul 11, 3:54 PM CDTSpecial Weather StatementMOBMobile36 min
Jul 11, 4:46 PM CDTSpecial Weather StatementMOBMobile44 min
Jul 11, 4:00 PM CDTSpecial Weather StatementMOBPerry45 min

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.