Alert archive / Mississippi / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 421, NWS Memphis, TN
NWS Memphis, TN issued this severe thunderstorm warning at Sep 5, 2012, 7:29 PM CDT for Benton County, Marshall County, Mississippi; Fayette County, Tennessee. It was in force for 31 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Sep 5, 2012, 7:29 PM CDT (00:29 UTC)
- Expired
- Sep 5, 2012, 8:00 PM CDT
- In force
- 31 min
- Issued by
- NWS Memphis, TN
- Area
- Storm-based polygon
Counties Benton County, MS, Marshall County, MS, Fayette County, TN
The radar
The Memphis radar (KNQA), 53 km from the middle of the area, began a volume at 00:30 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 5, 2:29 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Little Rock, AR (KLZK), launched 00:00Z, 0.5 hours before the alert went out and 46 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
- 1916 J/kg
- Mixed-layer CIN
- -24 J/kg
- Mixed-layer LCL
- 1832 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 88 m²/s²
- 0-3 km storm-relative helicity
- 155 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.2
The text
As transmitted, in the capitals the NWS used until 2016.
122
WUUS54 KMEG 060029
SVRMEG
MSC009-093-TNC047-060100-
/O.NEW.KMEG.SV.W.0421.120906T0029Z-120906T0100Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MEMPHIS TN
729 PM CDT WED SEP 5 2012
THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHWESTERN BENTON COUNTY IN NORTHEAST MISSISSIPPI...
NORTHERN MARSHALL COUNTY IN NORTHWEST MISSISSIPPI...
SOUTHERN FAYETTE COUNTY IN SOUTHWEST TENNESSEE...
* UNTIL 800 PM CDT
* AT 730 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS PRODUCING DAMAGING WINDS IN EXCESS OF
60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 9
MILES NORTH OF SLAYDEN TO 6 MILES NORTHWEST OF MT PLEASANT...OR
ALONG A LINE EXTENDING FROM 13 MILES EAST OF COLLIERVILLE TO 6
MILES SOUTHEAST OF COLLIERVILLE...AND MOVING SOUTHEAST AT 35 MPH.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO RURAL AREAS
OF NORTHERN MARSHALL...NORTHWESTERN BENTON AND SOUTHERN FAYETTE
COUNTIES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
.STAY TUNED TO THIS BROADCAST FOR THE LATEST UPDATES AND INFORMATION.
TO REPORT SEVERE WEATHER ONLY...CALL 1 800 4 3 2 0 8 7 5.
&&
LAT...LON 3499 8919 3481 8936 3497 8970 3500 8966
3500 8965 3501 8964 3511 8951
TIME...MOT...LOC 0030Z 299DEG 31KT 3506 8941 3498 8957
$$The office that day
Everything else NWS Memphis, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 5, 7:02 PM CDT | Severe Thunderstorm Warning | MEG | Marshall | 28 min |
| Sep 5, 7:41 PM CDT | Severe Thunderstorm Warning | MEG | Benton, Marshall, Tippah | 49 min |
| Sep 5, 8:04 PM CDT | Severe Thunderstorm Warning | MEG | Alcorn, Benton, Prentiss, Tippah | 41 min |
| Sep 5, 8:42 PM CDT | Special Weather Statement | MEG | Alcorn, Prentiss | 18 min |
| Sep 5, 10:22 PM CDT | Special Weather Statement | MEG | Benton | 23 min |
| Sep 6, 4:15 AM CDT | Heat Advisory | MEG | Calhoun, Coahoma, DeSoto, Lafayette, Marshall, Panola and 5 more | 15 hr |
| Sep 6, 5:08 PM CDT | Special Weather Statement | MEG | Tallahatchie | 22 min |
| Sep 5, 7:03 PM CDT | Areal Flood Advisory | MEG | Shelby | 87 min |
| Sep 5, 7:14 PM CDT | Severe Thunderstorm Warning | MEG | Chester, Hardeman, Haywood, Madison | 31 min |
| Sep 5, 7:18 PM CDT | Severe Thunderstorm Warning | MEG | Fayette | 27 min |
| Sep 5, 7:44 PM CDT | Special Weather Statement | MEG | Hardin, McNairy | 31 min |
| Sep 6, 6:14 PM CDT | Special Weather Statement | MEG | Lake | 31 min |
| Sep 6, 6:54 PM CDT | Special Weather Statement | MEG | Lake, Obion, Weakley | 21 min |
Nearby
Severe Thunderstorm Warnings in Mississippi, 2012Severe Thunderstorm Warnings in Tennessee, 2012Every severe thunderstorm warning 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.