Alert archive / Alabama / Special Weather Statements in 2018

Special Weather Statement, NWS Birmingham, AL

July 2, 2018Fayette County, Alabama

NWS Birmingham, AL issued this special weather statement at Jul 2, 2018, 3:20 PM CDT for Fayette County, Alabama. It was in force for 25 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 2, 2018, 3:20 PM CDT (20:20 UTC)
Expired
Jul 2, 2018, 3:45 PM CDT
In force
25 min
Issued by
NWS Birmingham, AL

County Fayette County, AL

The radar

The Columbus AFB radar (KGWX), 66 km from the middle of the area, began a volume at 20:23 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, 8.3 hours before the alert went out and 265 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, Jackson, MS at 12:00Z on 2018-07-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 693 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, Jackson, MS at 12:00Z on 2018-07-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 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
693 J/kg
Mixed-layer CIN
-114 J/kg
Mixed-layer LCL
1372 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
36 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 2, 12:43 PM CDTSpecial Weather StatementBMXTuscaloosa32 min
Jul 2, 12:51 PM CDTSpecial Weather StatementBMXPickens24 min
Jul 2, 1:04 PM CDTAreal Flood AdvisoryBMXGreene, Pickens, Tuscaloosa3 hr
Jul 2, 1:43 PM CDTSpecial Weather StatementBMXTuscaloosa32 min
Jul 2, 2:16 PM CDTSpecial Weather StatementBMXMarion29 min
Jul 2, 2:18 PM CDTAreal Flood AdvisoryBMXHale117 min
Jul 2, 2:27 PM CDTSpecial Weather StatementBMXLamar33 min
Jul 2, 2:41 PM CDTSpecial Weather StatementBMXFayette34 min
Jul 2, 3:13 PM CDTAreal Flood AdvisoryBMXFayette2 hr
Jul 2, 4:56 PM CDTAreal Flood AdvisoryBMXFayette, Walker2 hr
Jul 2, 6:10 PM CDTAreal Flood AdvisoryBMXAutauga, Dallas, Lowndes2 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.