Alert archive / Alabama / Special Weather Statements in 2017

Special Weather Statement, NWS Mobile, AL

July 8, 2017Mobile County, Alabama

NWS Mobile, AL issued this special weather statement at Jul 8, 2017, 11:43 AM CDT for Mobile County, Alabama. It was in force for 32 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 8, 2017, 11:43 AM CDT (16:43 UTC)
Expired
Jul 8, 2017, 12:15 PM CDT
In force
32 min
Issued by
NWS Mobile, AL

County Mobile County, AL

The radar

The Mobile radar (KMOB), 4 km from the middle of the area, began a volume at 16:46 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, 4.7 hours before the alert went out and 146 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, Slidell Radar S, LA at 12:00Z on 2017-07-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2628 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, Slidell Radar S, LA at 12:00Z on 2017-07-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -7 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
2628 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
680 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
-7 m²/s²
0-3 km storm-relative helicity
-7 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 8, 7:31 AM CDT, 4 hours 12 minutes earlier.

Area forecast discussion, Jul 8, 7:31 AM CDT, 4 hours 12 minutes before
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</head>
<body>
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    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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        Please try again in a few minutes.
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Hazardous weather outlook, Jul 8, 5:37 AM CDT, 6 hours 6 minutes before
Hazardous Weather Outlook
National Weather Service Mobile AL
537 AM CDT Sat Jul 8 2017

ALZ051>060-261>266-FLZ201>206-MSZ067-075-076-078-079-091045-
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-
537 AM CDT Sat Jul 8 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 to numerous showers and thunderstorms can be expected
for most locations in the forecast today. Conditions are
favorable for a few storms to become strong to marginally severe,
especially during the afternoon and early evening hours. Gusty
straight line winds, Frequent cloud to ground lightning and heavy
downpours will be the main threats with the stronger
thunderstorms.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

Scattered showers and thunderstorms will continue each day. A few of
the stronger storms that develop will be capable of producing strong
and gusty winds, frequent lightning strikes and very heavy
downpours.

.SPOTTER INFORMATION STATEMENT...

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

GMZ630>635-650-655-670-675-091045-
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-
537 AM CDT Sat Jul 8 2017

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

.DAY ONE...Today and Tonight

Winds and waves will be higher near scattered to numerous showers
and thunderstorms today and tonight. Showers and thunderstorms
will be moving from west to east at 10 to 20 knots.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

Winds and waves will be higher near scattered to numerous showers
and thunderstorms through early next week, followed by less
coverage later in the week.

In the hours before

Special weather statement, Jul 8, 11:43 AM CDT, 0 minutes before
Special Weather Statement
National Weather Service Mobile AL
1143 AM CDT SAT JUL 8 2017

ALZ263-265-081715-
Mobile Coastal AL-Mobile Central AL-
1143 AM CDT SAT JUL 8 2017

...A STRONG THUNDERSTORM WILL AFFECT THE FOLLOWING COUNTIES...
SOUTHWESTERN MOBILE COUNTY UNTIL 1215 PM CDT...

At 1142 AM CDT, the strong thunderstorm was located over Tillmans
Corner, moving east at 30 mph.

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

Locations impacted include...
Midtown Mobile, Prichard, Tillmans Corner, Theodore, Grand Bay,
Tanner Williams, I65 And I165, Mobile Regional Airport and I10 And
I65.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3072 8841 3080 8817 3080 8809 3042 8797
      3040 8840
TIME...MOT...LOC 1642Z 261DEG 25KT 3058 8821

DJ/17

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 8, 12:07 PM CDTSpecial Marine WarningMOB53 min
Jul 8, 12:57 PM CDTSpecial Weather StatementMOBEscambia33 min
Jul 8, 12:59 PM CDTSpecial Weather StatementMOBBaldwin31 min
Jul 8, 1:14 PM CDTSpecial Weather StatementMOBEscambia31 min
Jul 8, 1:34 PM CDTSpecial Weather StatementMOBBaldwin26 min
Jul 8, 2:10 PM CDTSpecial Marine WarningMOB65 min
Jul 8, 2:26 PM CDTSpecial Weather StatementMOBCovington49 min
Jul 8, 2:31 PM CDTSpecial Weather StatementMOBCrenshaw29 min
Jul 8, 3:13 PM CDTAreal Flood AdvisoryMOBCovington, Escambia3 hr
Jul 8, 3:13 PM CDTSpecial Weather StatementMOBMonroe32 min
Jul 8, 3:19 PM CDTSpecial Weather StatementMOBChoctaw41 min
Jul 8, 3:37 PM CDTSpecial Weather StatementMOBClarke, Monroe38 min
Jul 8, 3:56 PM CDTSpecial Weather StatementMOBWashington34 min
Jul 8, 4:09 PM CDTSevere Thunderstorm WarningMOBClarke, Monroe, Washington51 min
Jul 8, 1:13 PM CDTSpecial Weather StatementMOBOkaloosa47 min
Jul 8, 2:07 PM CDTSpecial Weather StatementMOBEscambia, Santa Rosa53 min
Jul 8, 2:54 PM CDTSpecial Weather StatementMOBOkaloosa66 min
Jul 8, 6:02 PM CDTSpecial Weather StatementMOBGeorge28 min
Jul 8, 6:28 PM CDTSpecial Weather StatementMOBGeorge32 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; radar from the NEXRAD Level II archive.