Alert archive / Alabama / Special Weather Statements in 2017

Special Weather Statement, NWS Mobile, AL

March 1, 2017Choctaw County, Alabama

NWS Mobile, AL issued this special weather statement at Mar 1, 2017, 4:54 PM CST for Choctaw County, Alabama. It was in force for 51 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: Mar 1, 2017, 4:54 PM CST (22:54 UTC)
Expired: Mar 1, 2017, 5:45 PM CST
In force: 51 min
Issued by: NWS Mobile, AL

County Choctaw County, AL

The radar

The Mobile radar (KMOB), 155 km from the middle of the area, began a volume at 22:56 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, 10.9 hours before the alert went out and 180 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: 246 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 549 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 290 m²/s²
0-3 km storm-relative helicity: 372 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 3.3

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 Mar 1, 3:59 PM CST, 55 minutes earlier.

Area forecast discussion, Mar 1, 3:59 PM CST, 55 minutes before

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<body>
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      <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, Mar 1, 10:45 AM CST, 6 hours 9 minutes before

Hazardous Weather Outlook...UPDATED
National Weather Service Mobile AL
1045 AM CST Wed Mar 1 2017

ALZ051>060-261>266-FLZ201>206-MSZ067-075-076-078-079-021645-
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-
1045 AM CST Wed Mar 1 2017

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

.DAY ONE...Today and Tonight

Severe Weather Impacts...For this afternoon and evening, there is
a slight risk of severe thunderstorms generally along and north
of a line of a Waynesboro Mississippi to Luverne Alabama line. A
marginal risk of severe thunderstorms exists south of this line to
the coast. The main severe weather impacts will be damaging winds
and large hail, although isolated tornadoes are possible.

Rip Current Impacts...There is a moderate risk of rip currents
through tonight for the Gulf beaches of Alabama and the western
Florida Panhandle.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Rip Current Impacts...A moderate risk of rip currents will
continue for the Gulf beaches of Alabama and the western Florida
Panhandle through Friday.

.SPOTTER INFORMATION STATEMENT...

Activation of storm spotter groups and emergency management
personnel for severe weather operations may be required north of
the Highway 84 corridor this afternoon and evening.

GMZ630>635-650-655-670-675-021645-
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-
1045 AM CST Wed Mar 1 2017

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

.DAY ONE...Today and Tonight

Hazardous wind and wave conditions for small craft will be likely
beginning late tonight in the wake of a strong cold front.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Hazardous wind and wave conditions for small craft will exist
through Friday, and possibly continue into the upcoming weekend.

Butts

In the hours before

Special weather statement, Mar 1, 4:54 PM CST, 0 minutes before

Special Weather Statement
National Weather Service Mobile AL
454 PM CST WED MAR 1 2017

ALZ051-MSZ067-012345-
Choctaw AL-Wayne MS-
454 PM CST WED MAR 1 2017

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT THE FOLLOWING
COUNTIES...CHOCTAW AND NORTHEASTERN WAYNE COUNTIES UNTIL 545 PM
CST...

At 453 PM CST, the strong thunderstorms were located along a line
extending from near Snell to near Crandall to near Goodwater,and
moving east at 40 mph.

Dime size hail and winds of 40 mph will be possible with these
storms.

Locations impacted include...
Butler, Lisman, Pennington, Gilbertown and Toxey.

LAT...LON 3229 8793 3228 8802 3218 8801 3215 8802
      3214 8804 3209 8804 3206 8807 3207 8810
      3205 8812 3201 8811 3199 8810 3201 8809
      3199 8807 3183 8821 3183 8885 3185 8865
      3190 8847 3228 8842
TIME...MOT...LOC 2253Z 274DEG 34KT 3221 8847 3203 8856 3187 8879

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 1, 4:47 AM CST	Small Craft Advisory	MOB		3 days
Mar 1, 5:34 PM CST	Special Weather Statement	MOB	Clarke	41 min
Mar 1, 5:38 PM CST	Severe Thunderstorm Warning	MOB	Choctaw, Clarke	52 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.