Alert archive / Alabama / Special Weather Statements in 2018

Special Weather Statement, NWS Mobile, AL

May 29, 2018Butler County, Alabama

NWS Mobile, AL issued this special weather statement at May 29, 2018, 3:36 AM CDT for Butler 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
May 29, 2018, 3:36 AM CDT (08:36 UTC)
Expired
May 29, 2018, 4:15 AM CDT
In force
39 min
Issued by
NWS Mobile, AL

County Butler County, AL

The radar

The Maxwell AFB radar (KMXX), 88 km from the middle of the area, began a volume at 08:35 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 00:00Z, 8.6 hours before the alert went out and 239 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, Peachtre/Fal Fld, GA at 00:00Z on 2018-05-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 148 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, Peachtre/Fal Fld, GA at 00:00Z on 2018-05-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 45 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
148 J/kg
Mixed-layer CIN
-74 J/kg
Mixed-layer LCL
979 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
45 m²/s²
0-3 km storm-relative helicity
67 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 May 29, 12:36 AM CDT, 3 hours earlier.

Area forecast discussion, May 29, 12:36 AM CDT, 3 hours before
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Hazardous weather outlook, May 28, 11:23 PM CDT, 4 hours 13 minutes before
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In the hours before

Special weather statement, May 28, 10:57 PM CDT, 4 hours 39 minutes before
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Special weather statement, May 29, 3:36 AM CDT, 0 minutes before
Special Weather Statement
National Weather Service Mobile AL
336 AM CDT TUE MAY 29 2018

ALZ057-058-290915-
Butler AL-Crenshaw AL-
336 AM CDT TUE MAY 29 2018

...A STRONG THUNDERSTORM WILL AFFECT THE FOLLOWING COUNTIES...
NORTHERN BUTLER AND NORTHERN CRENSHAW COUNTIES UNTIL 415 AM CDT...

At 336 AM CDT, the strong thunderstorm was located 4 miles southeast
of Lowndes County Airport, or 5 miles southeast of Fort Deposit,
moving east at 35 mph.

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

Locations impacted include...
Greenville, Lapine and Highland Home.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 3188 8618 3168 8681 3194 8688 3196 8681
      3196 8641 3203 8641 3204 8640 3205 8640
      3205 8630 3197 8630 3196 8619 3193 8618
TIME...MOT...LOC 0836Z 248DEG 29KT 3192 8653

The office that day

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

IssuedProductOfficeCountiesLasted
May 28, 7:06 PM CDTSpecial Weather StatementMOBWashington39 min
May 28, 7:43 PM CDTSpecial Weather StatementMOBMobile47 min
May 28, 8:44 PM CDTFlash Flood WarningMOBButler, Conecuh, Covington, Escambia, Monroe6 hr
May 28, 10:57 PM CDTSpecial Weather StatementMOBConecuh, Escambia48 min
May 29, 12:18 AM CDTFlash Flood WarningMOBButler, Covington, Crenshaw6 hr
May 29, 5:23 AM CDTAreal Flood AdvisoryMOBOkaloosa3 hr

Nearby

Special Weather Statements in Alabama, 2018Every special weather statement in 2018

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.