Alert archive / Alabama / Wind Chill Advisories in 2014

Wind Chill Advisory 2, NWS Huntsville, AL

January 21, 2014DeKalb County, Jackson County, Alabama; Franklin County, Moore County, Tennessee

NWS Huntsville, AL issued this wind chill advisory at Jan 21, 2014, 9:36 PM CST for DeKalb County, Jackson County, Alabama; Franklin County, Moore County, Tennessee. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued
Jan 21, 2014, 9:36 PM CST (03:36 UTC)
Expired
Jan 22, 2014, 5:36 AM CST
In force
8 hr
Issued by
NWS Huntsville, AL

Counties DeKalb County, AL, Jackson County, AL, Franklin County, TN, Moore County, TN

The radar

The Northeast Alabama radar (KHTX), 2 km from the middle of the area, began a volume at 03:35 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

Birmingham, AL (KBMX), launched 00:00Z, 3.6 hours before the alert went out and 204 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, Birmingham, AL at 00:00Z on 2014-01-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLEL10008507005003002001001 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, Birmingham, AL at 00:00Z on 2014-01-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -25 square meters per square second.1939587897117Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1101 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
-25 m²/s²
0-3 km storm-relative helicity
89 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

Nearby

Wind Chill Advisories in Alabama, 2014Wind Chill Advisories in Tennessee, 2014Every wind chill advisory in 2014

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.