Alert archive / Arkansas / Freeze Warnings in 2014

Freeze Warning 1, NWS Shreveport, LA

March 25, 2014Ouachita Parish, Union Parish, Louisiana; 6 counties in Arkansas

NWS Shreveport, LA issued this freeze warning at Mar 25, 2014, 2:54 AM CDT for Ouachita Parish, Union Parish, Louisiana; 6 counties in Arkansas. It took effect at Mar 26, 2014, 12:00 AM CDT. It was in force for 9 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Mar 25, 2014, 2:54 AM CDT (07:54 UTC)
In effect from
Mar 26, 2014, 12:00 AM CDT
Expired
Mar 26, 2014, 9:00 AM CDT
In force
9 hr
Issued by
NWS Shreveport, LA

Counties Columbia County, AR, Hempstead County, AR, Howard County, AR, Nevada County, AR, Sevier County, AR, Union County, AR, Ouachita Parish, LA, Union Parish, LA

The radar

The Shreveport radar (KSHV), 121 km from the middle of the area, began a volume at 07:59 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 00:00Z, 7.9 hours before the alert went out and 315 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 00:00Z on 2014-03-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 00:00Z on 2014-03-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -10 square meters per square second.1939587897117136Sfc1 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
2334 m above ground
0-6 km bulk shear
82 kt
0-1 km storm-relative helicity
-10 m²/s²
0-3 km storm-relative helicity
134 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

Nearby

Freeze Warnings in Arkansas, 2014Freeze Warnings in Louisiana, 2014Every freeze warning 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.