Alert archive / Mississippi / Tornado Warnings in 2012
Tornado Warning 89, NWS Mobile, AL
NWS Mobile, AL issued this tornado warning at Dec 20, 2012, 6:40 AM CST for Greene County, Mississippi; Washington County, Alabama. It was in force for 50 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
- Dec 20, 2012, 6:40 AM CST (12:40 UTC)
- Expired
- Dec 20, 2012, 7:30 AM CST
- In force
- 50 min
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
Counties Washington County, AL, Greene County, MS
The radar
The Mobile radar (KMOB), 84 km from the middle of the area, began a volume at 12:42 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 |
|---|---|---|---|
| Dec 20, 4:23 AM CST | Tornado Watch | SPC | 9 hr |
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 0.7 hours before the alert went out and 177 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
- 1181 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 506 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 275 m²/s²
- 0-3 km storm-relative helicity
- 310 m²/s²
- Significant tornado parameter
- 2.0
- Supercell composite
- 9.6
The text
As transmitted, in the capitals the NWS used until 2016.
253
WFUS54 KMOB 201240
TORMOB
ALC129-MSC041-201330-
/O.NEW.KMOB.TO.W.0089.121220T1240Z-121220T1330Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MOBILE AL
640 AM CST THU DEC 20 2012
THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A
* TORNADO WARNING FOR...
NORTHEASTERN GREENE COUNTY IN SOUTHEAST MISSISSIPPI...
CENTRAL WASHINGTON COUNTY IN SOUTHWEST ALABAMA...
* UNTIL 730 AM CST
* AT 637 AM CST...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
TORNADO WAS LOCATED 7 MILES NORTHWEST OF LEAKESVILLE...OR 15 MILES
NORTHEAST OF MCLAIN...MOVING NORTHEAST AT 45 MPH.
* LOCATIONS IMPACTED INCLUDE...
FRUITDALE... CHATOM...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR OF A STURDY BUILDING.
A TORNADO WATCH REMAINS IN EFFECT UNTIL NOON CST THURSDAY FOR
SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST MISSISSIPPI.
&&
LAT...LON 3144 8847 3144 8845 3146 8845 3166 8823
3147 8810 3118 8862 3125 8868
TIME...MOT...LOC 1240Z 227DEG 40KT 3126 8860
$$
PURDY1 follow-up statement
910 WWUS54 KMOB 201258 SVSMOB SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 658 AM CST THU DEC 20 2012 MSC041-201308- /O.CAN.KMOB.TO.W.0089.000000T0000Z-121220T1330Z/ GREENE MS- 658 AM CST THU DEC 20 2012 ...THE TORNADO WARNING HAS BEEN CANCELLED FOR NORTHEASTERN GREENE COUNTY... AT 656 AM CST...THE STORM THAT PROMPTED THE WARNING FOR NORTHEASTERN GREENE COUNTY HAS MOVED OUT OF THE COUNTY...THUS THE TORNADO WARNING HAS BEEN CANCELLED. A TORNADO WATCH REMAINS IN EFFECT UNTIL NOON CST THURSDAY FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST MISSISSIPPI. LAT...LON 3146 8845 3166 8823 3147 8810 3128 8844 TIME...MOT...LOC 1258Z 232DEG 42KT 3139 8840 $$ ALC129-201330- /O.CON.KMOB.TO.W.0089.000000T0000Z-121220T1330Z/ WASHINGTON AL- 658 AM CST THU DEC 20 2012 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 AM CST FOR CENTRAL WASHINGTON COUNTY... AT 656 AM CST...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO WAS LOCATED 12 MILES SOUTHWEST OF CHATOM...OR 2 MILES NORTHWEST OF FRUITDALE...MOVING NORTHEAST AT 50 MPH. LOCATIONS IMPACTED INCLUDE... FRUITDALE... CHATOM... PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER NOW. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. A TORNADO WATCH REMAINS IN EFFECT UNTIL NOON CST THURSDAY FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST MISSISSIPPI. && LAT...LON 3146 8845 3166 8823 3147 8810 3128 8844 TIME...MOT...LOC 1258Z 232DEG 42KT 3139 8840 $$ PURDY
The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 20, 7:12 AM CST | Severe Thunderstorm Warning | MOB | Wayne | 63 min |
| Dec 20, 7:42 AM CST | Severe Thunderstorm Warning | MOB | George, Greene, Perry, Stone | 63 min |
| Dec 20, 2:51 AM CST | Gale Warning | MOB | 30 hr | |
| Dec 20, 2:51 AM CST | Small Craft Advisory | MOB | 33 hr | |
| Dec 20, 4:11 AM CST | Tornado Warning | MOB | Mobile | 64 min |
| Dec 20, 4:42 AM CST | Tornado Warning | MOB | Mobile | 36 min |
| Dec 20, 4:49 AM CST | Tornado Warning | MOB | Choctaw | 30 min |
| Dec 20, 5:14 AM CST | Tornado Warning | MOB | Baldwin | 46 min |
| Dec 20, 5:29 AM CST | Tornado Warning | MOB | Washington | 46 min |
| Dec 20, 5:38 AM CST | Tornado Warning | MOB | Choctaw, Clarke, Washington | 52 min |
| Dec 20, 5:45 AM CST | Tornado Warning | MOB | Baldwin, Mobile | 39 min |
| Dec 20, 6:03 AM CST | Tornado Warning | MOB | Clarke | 28 min |
| Dec 20, 6:06 AM CST | Tornado Warning | MOB | Washington | 22 min |
| Dec 20, 6:08 AM CST | Tornado Warning | MOB | Baldwin | 21 min |
| Dec 20, 6:11 AM CST | Tornado Warning | MOB | Conecuh, Escambia, Monroe | 49 min |
| Dec 20, 6:39 AM CST | Tornado Warning | MOB | Conecuh, Monroe | 35 min |
| Dec 20, 6:56 AM CST | Tornado Warning | MOB | Baldwin, Mobile | 34 min |
| Dec 20, 7:02 AM CST | Tornado Warning | MOB | Baldwin, Mobile | 58 min |
| Dec 20, 7:06 AM CST | Special Marine Warning | MOB | 84 min | |
| Dec 20, 7:18 AM CST | Tornado Warning | MOB | Clarke, Washington | 42 min |
| Dec 20, 7:19 AM CST | Tornado Warning | MOB | Conecuh, Escambia, Monroe | 56 min |
| Dec 20, 7:25 AM CST | Tornado Warning | MOB | Clarke, Wilcox | 50 min |
| Dec 20, 7:36 AM CST | Tornado Warning | MOB | Baldwin, Clarke, Monroe | 42 min |
| Dec 20, 7:52 AM CST | Tornado Warning | MOB | Baldwin | 53 min |
| Dec 20, 8:10 AM CST | Tornado Warning | MOB | Wilcox | 32 min |
| Dec 20, 8:14 AM CST | Tornado Warning | MOB | Conecuh, Monroe | 33 min |
| Dec 20, 8:15 AM CST | Severe Thunderstorm Warning | MOB | Choctaw, Clarke | 17 min |
| Dec 20, 8:26 AM CST | Special Marine Warning | MOB | 94 min | |
| Dec 20, 8:27 AM CST | Tornado Warning | MOB | Escambia | 63 min |
| Dec 20, 8:29 AM CST | Tornado Warning | MOB | Escambia | 46 min |
| Dec 20, 9:11 AM CST | Tornado Warning | MOB | Escambia | 25 min |
| Dec 20, 9:25 AM CST | Tornado Warning | MOB | Covington | 55 min |
| Dec 20, 9:28 AM CST | Severe Thunderstorm Warning | MOB | Wilcox | 15 min |
| Dec 20, 9:30 AM CST | Special Marine Warning | MOB | 60 min | |
| Dec 20, 9:49 AM CST | Severe Thunderstorm Warning | MOB | Wilcox | 26 min |
| Dec 20, 9:50 AM CST | Tornado Warning | MOB | Covington, Crenshaw | 16 min |
| Dec 20, 10:23 AM CST | Special Marine Warning | MOB | 82 min | |
| Dec 20, 11:34 AM CST | Special Marine Warning | MOB | 61 min | |
| Dec 20, 2:19 PM CST | Fire Weather Watch | MOB | Butler, Conecuh, Covington, Crenshaw, Escambia, Monroe and 1 more | 16 hr |
| Dec 20, 2:19 PM CST | Red Flag Warning | MOB | Butler, Choctaw, Clarke, Conecuh, Covington, Crenshaw and 4 more | 27 hr |
Nearby
Tornado Warnings in Mississippi, 2012Tornado Warnings in Alabama, 2012Every tornado warning in 2012Tornadoes 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.