Alert archive / Tennessee / Frost Advisories in 2010

Frost Advisory 4, NWS Memphis, TN

October 4, 201019 counties in Tennessee; 5 counties in Mississippi; 4 counties in Arkansas

NWS Memphis, TN issued this frost advisory at Oct 4, 2010, 4:10 AM CDT for 19 counties in Tennessee; 5 counties in Mississippi; 4 counties in Arkansas. It took effect at Oct 5, 2010, 3:00 AM CDT. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued
Oct 4, 2010, 4:10 AM CDT (09:10 UTC)
In effect from
Oct 5, 2010, 3:00 AM CDT
Expired
Oct 5, 2010, 8:00 AM CDT
In force
5 hr
Issued by
NWS Memphis, TN
All 28 counties

Clay County, AR, Lawrence County, AR, Mississippi County, AR, Randolph County, AR, Alcorn County, MS, Benton County, MS, Marshall County, MS, Tippah County, MS, Tishomingo County, MS, Carroll County, TN, Chester County, TN, Crockett County, TN, Decatur County, TN, Dyer County, TN, Fayette County, TN, Gibson County, TN, Hardeman County, TN, Hardin County, TN, Haywood County, TN, Henderson County, TN, Henry County, TN, Lake County, TN, Lauderdale County, TN, Madison County, TN, McNairy County, TN, Obion County, TN, Tipton County, TN, Weakley County, TN

The radar

The Memphis radar (KNQA), 72 km from the middle of the area, began a volume at 09:15 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, 9.2 hours before the alert went out and 349 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 2010-10-04Temperature 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, Birmingham, AL at 00:00Z on 2010-10-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -40 square meters per square second.19395878Sfc1 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
2127 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
-40 m²/s²
0-3 km storm-relative helicity
0 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

Everything else NWS Memphis, TN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 3, 9:13 PM CDTFreeze WarningMEGCarroll, Chester, Crockett, Decatur, Gibson, Hardin and 6 more11 hr
Oct 4, 3:29 PM CDTFreeze WarningMEGCarroll, Decatur, Hardin, Henderson, Henry, Weakley17 hr

Nearby

Frost Advisories in Tennessee, 2010Frost Advisories in Mississippi, 2010Frost Advisories in Arkansas, 2010Every frost advisory in 2010

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.