Alert archive / Alabama / Special Weather Statements in 2017

Special Weather Statement, NWS Mobile, AL

December 5, 2017Butler County, Alabama

NWS Mobile, AL issued this special weather statement at Dec 5, 2017, 4:42 PM CST for Butler County, Alabama. It was in force for 48 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 5, 2017, 4:42 PM CST (22:42 UTC)
Expired: Dec 5, 2017, 5:30 PM CST
In force: 48 min
Issued by: NWS Mobile, AL

County Butler County, AL

The radar

The Maxwell AFB radar (KMXX), 130 km from the middle of the area, began a volume at 22:46 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

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 10.7 hours before the alert went out and 281 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: 2 J/kg
Mixed-layer CIN: -271 J/kg
Mixed-layer LCL: 699 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 221 m²/s²
0-3 km storm-relative helicity: 282 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 Dec 5, 3:53 PM CST, 49 minutes earlier.

Area forecast discussion, Dec 5, 3:53 PM CST, 49 minutes before

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Hazardous weather outlook, Dec 5, 4:40 AM CST, 12 hours 2 minutes before

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In the hours before

Special weather statement, Dec 5, 2:57 PM CST, 1 hour 45 minutes before

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Special weather statement, Dec 5, 3:18 PM CST, 1 hour 24 minutes before

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Special weather statement, Dec 5, 4:08 PM CST, 34 minutes before

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Special weather statement, Dec 5, 4:42 PM CST, 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
Dec 5, 3:40 AM CST	Small Craft Advisory	MOB		5 days
Dec 5, 2:57 PM CST	Special Weather Statement	MOB	Escambia	48 min
Dec 5, 3:18 PM CST	Special Weather Statement	MOB	Clarke	42 min
Dec 5, 4:08 PM CST	Special Weather Statement	MOB	Monroe	52 min
Dec 5, 4:49 PM CST	Special Weather Statement	MOB	Clarke, Monroe	26 min
Dec 5, 5:10 PM CST	Special Weather Statement	MOB	Covington	35 min
Dec 5, 5:22 PM CST	Special Weather Statement	MOB	Butler	38 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.