Alert archive / Alabama / Special Weather Statements in 2016

Special Weather Statement, NWS Mobile, AL

September 11, 2016Wilcox County, Alabama

NWS Mobile, AL issued this special weather statement at Sep 11, 2016, 4:45 PM CDT for Wilcox County, Alabama. It was in force for 30 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: Sep 11, 2016, 4:45 PM CDT (21:45 UTC)
Expired: Sep 11, 2016, 5:15 PM CDT
In force: 30 min
Issued by: NWS Mobile, AL

County Wilcox County, AL

The radar

The Mobile radar (KMOB), 153 km from the middle of the area, began a volume at 21:47 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

Jackson, MS (KJAN), launched 12:00Z, 9.8 hours before the alert went out and 256 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: 573 J/kg
Mixed-layer CIN: -141 J/kg
Mixed-layer LCL: 979 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: -4 m²/s²
0-3 km storm-relative helicity: 16 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 Sep 11, 4:02 PM CDT, 43 minutes earlier.

Area forecast discussion, Sep 11, 4:02 PM CDT, 43 minutes before

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Hazardous weather outlook, Sep 11, 5:10 AM CDT, 11 hours 35 minutes before

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In the hours before

Special weather statement, Sep 11, 1:43 PM CDT, 3 hours 2 minutes before

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Special weather statement, Sep 11, 1:51 PM CDT, 2 hours 54 minutes before

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Special weather statement, Sep 11, 3:40 PM CDT, 1 hour 5 minutes before

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Special weather statement, Sep 11, 4:07 PM CDT, 38 minutes before

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Local storm report, Sep 11, 4:31 PM CDT, 14 minutes before

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Special weather statement, Sep 11, 4:45 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
Sep 11, 1:43 PM CDT	Special Weather Statement	MOB	Choctaw	47 min
Sep 11, 4:07 PM CDT	Special Weather Statement	MOB	Clarke	23 min
Sep 11, 1:51 PM CDT	Special Weather Statement	MOB	Wayne	39 min
Sep 11, 2:21 PM CDT	Severe Thunderstorm Warning	MOB	Wayne	24 min
Sep 11, 2:50 PM CDT	Areal Flood Advisory	MOB	Wayne	3 hr
Sep 11, 3:40 PM CDT	Special Weather Statement	MOB	Wayne	35 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.