Alert archive / Tennessee / Winter Weather Advisories in 2012
Winter Weather Advisory 2, NWS Memphis, TN
NWS Memphis, TN issued this winter weather advisory at Dec 25, 2012, 4:17 AM CST for 5 counties in Mississippi; 13 counties in Tennessee; 4 counties in Arkansas. It took effect at Dec 25, 2012, 9:00 PM CST. It was in force for 12 hr.
The area
The counties it named.
The facts
- Issued
- Dec 25, 2012, 4:17 AM CST (10:17 UTC)
- In effect from
- Dec 25, 2012, 9:00 PM CST
- Expired
- Dec 26, 2012, 9:00 AM CST
- In force
- 12 hr
- Issued by
- NWS Memphis, TN
All 22 counties
Crittenden County, AR, Lee County, AR, Phillips County, AR, St. Francis County, AR, Coahoma County, MS, DeSoto County, MS, Quitman County, MS, Tate County, MS, Tunica County, MS, Carroll County, TN, Crockett County, TN, Dyer County, TN, Fayette County, TN, Gibson County, TN, Haywood County, TN, Henry County, TN, Lake County, TN, Lauderdale County, TN, Obion County, TN, Shelby County, TN, Tipton County, TN, Weakley County, TN
The radar
The Memphis radar (KNQA), 16 km from the middle of the area, began a volume at 10:17 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
Little Rock, AR (KLZK), launched 00:00Z, 10.3 hours before the alert went out and 66 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2386 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 61 m²/s²
- 0-3 km storm-relative helicity
- 179 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this winter weather advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Memphis, TN wrote its last area forecast discussion before this winter weather advisory went out at Dec 25, 3:51 AM CST, 26 minutes earlier.
Area forecast discussion, Dec 25, 3:51 AM CST, 26 minutes before
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</html>The office that day
Everything else NWS Memphis, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 25, 4:32 AM CST | Wind Advisory | MEG | Alcorn, Benton, Calhoun, Chickasaw, Coahoma, DeSoto and 16 more | 28 hr |
| Dec 25, 4:17 AM CST | Blizzard Warning | MEG | Dyer, Lake, Lauderdale, Obion | 29 hr |
Nearby
Winter Weather Advisories in Tennessee, 2012Winter Weather Advisories in Mississippi, 2012Winter Weather Advisories in Arkansas, 2012Every winter weather advisory in 2012
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.