Alert archive / Mississippi / Frost Advisories in 2009
Frost Advisory 7, NWS Memphis, TN
NWS Memphis, TN issued this frost advisory at Nov 5, 2009, 3:26 PM CST for 15 counties in Mississippi; 15 counties in Tennessee; Mississippi County, Arkansas. It took effect at Nov 6, 2009, 2:00 AM CST. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Nov 5, 2009, 3:26 PM CST (21:26 UTC)
- In effect from
- Nov 6, 2009, 2:00 AM CST
- Expired
- Nov 6, 2009, 6:22 AM CST
- In force
- 4 hr
- Issued by
- NWS Memphis, TN
All 31 counties
Mississippi County, AR, Alcorn County, MS, Benton County, MS, Calhoun County, MS, Chickasaw County, MS, DeSoto County, MS, Itawamba County, MS, Lafayette County, MS, Lee County, MS, Marshall County, MS, Monroe County, MS, Pontotoc County, MS, Prentiss County, MS, Tate County, MS, Tippah County, MS, Union County, MS, Chester County, TN, Crockett County, TN, Dyer County, TN, Fayette County, TN, Gibson County, TN, Hardeman County, TN, Haywood County, TN, Lake County, TN, Lauderdale County, TN, Madison County, TN, McNairy County, TN, Obion County, TN, Shelby County, TN, Tipton County, TN, Weakley County, TN
The radar
The Memphis radar (KNQA), 71 km from the middle of the area, began a volume at 21:26 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 12:00Z, 9.4 hours before the alert went out and 305 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
- 1372 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 5 m²/s²
- 0-3 km storm-relative helicity
- -26 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The office that day
Everything else NWS Memphis, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 5, 3:26 PM CST | Freeze Warning | MEG | Alcorn, Prentiss, Tippah, Tishomingo | 16 hr |
Nearby
Frost Advisories in Mississippi, 2009Frost Advisories in Tennessee, 2009Frost Advisories in Arkansas, 2009Every frost advisory in 2009
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.