Alert archive / Alabama / Tornado Warnings in 2011
Tornado Warning 46, NWS Mobile, AL
NWS Mobile, AL issued this tornado warning at Apr 15, 2011, 1:22 PM CDT for Clarke County, Washington County, Alabama. It was in force for 21 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
- Apr 15, 2011, 1:22 PM CDT (18:22 UTC)
- Expired
- Apr 15, 2011, 1:43 PM CDT
- In force
- 21 min
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
Counties Clarke County, AL, Washington County, AL
The radar
The Mobile radar (KMOB), 105 km from the middle of the area, began a volume at 18:24 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 |
|---|---|---|---|
| Apr 15, 7:32 AM CDT | Tornado Watch | SPC | 7 hr |
| Apr 15, 11:21 AM CDT | Tornado Watch | SPC | 9 hr |
The nearest sounding before it
Birmingham, AL (KBMX), launched 12:00Z, 6.4 hours before the alert went out and 209 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
- 1553 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 282 m²/s²
- 0-3 km storm-relative helicity
- 365 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted, in the capitals the NWS used until 2016.
031 WFUS54 KMOB 151822 TORMOB ALC025-129-151915- /O.NEW.KMOB.TO.W.0046.110415T1822Z-110415T1915Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE MOBILE AL 122 PM CDT FRI APR 15 2011 THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A * TORNADO WARNING FOR... SOUTHERN CLARKE COUNTY IN SOUTHWEST ALABAMA... THIS INCLUDES THE CITIES OF...JACKSON...GROVE HILL... NORTHEASTERN WASHINGTON COUNTY IN SOUTHWEST ALABAMA... THIS INCLUDES THE CITY OF CHATOM... * UNTIL 215 PM CDT * AT 119 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR CHATOM...OR 11 MILES WEST OF CORTELUOU...MOVING NORTHEAST AT 35 MPH. * THE TORNADO WILL BE NEAR... CORTELUOU AROUND 130 PM CDT... SAINT STEPHRNS AND SAINT STEPHENS AROUND 135 PM CDT... JACKSON AROUND 145 PM CDT... ALLEN AROUND 205 PM CDT... GROVE HILL...WHATLEY AND WHATELY AROUND 210 PM CDT... PRECAUTIONARY/PREPAREDNESS ACTIONS... IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING GOLF BALL SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS. THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS. IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT FRIDAY EVENING FOR SOUTHWESTERN ALABAMA AND SOUTHEAST MISSISSIPPI. && LAT...LON 3182 8792 3159 8761 3133 8818 3145 8831 TIME...MOT...LOC 1822Z 234DEG 32KT 3145 8816 $$
2 follow-up statements
267 WWUS54 KMOB 151835 SVSMOB SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 135 PM CDT FRI APR 15 2011 ALC025-129-151915- /O.CON.KMOB.TO.W.0046.000000T0000Z-110415T1915Z/ WASHINGTON AL-CLARKE AL- 135 PM CDT FRI APR 15 2011 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 215 PM CDT FOR SOUTHERN CLARKE AND EAST CENTRAL WASHINGTON COUNTIES... AT 133 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS TORNADO WAS NEAR SAINT STEPHRNS...OR ABOUT 10 MILES WEST OF JACKSON...MOVING NORTHEAST AT 35 MPH. EMERGENCY MANAGEMENT HAS REPORTED DAMAGE WITH THIS STORM ACROSS CENTRAL WASHINGTON COUNTY. THE TORNADO WILL BE NEAR... LEROY AROUND 140 PM CDT... SALITPA AROUND 145 PM CDT... TODDTOWN...MCVAY AND WINN AROUND 155 PM CDT... ZIMCO AROUND 200 PM CDT... UNION AROUND 205 PM CDT... GROVE HILL...WHATLEY AND WHATELY AROUND 210 PM CDT... IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING GOLF BALL SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS. A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT FRIDAY EVENING FOR SOUTHWESTERN ALABAMA AND SOUTHEAST MISSISSIPPI. LAT...LON 3143 8806 3153 8818 3182 8792 3159 8761 TIME...MOT...LOC 1834Z 234DEG 32KT 3151 8806 $$
002 WWUS54 KMOB 151843 SVSMOB SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 143 PM CDT FRI APR 15 2011 ALC025-129-151853- /O.CAN.KMOB.TO.W.0046.000000T0000Z-110415T1915Z/ WASHINGTON AL-CLARKE AL- 143 PM CDT FRI APR 15 2011 ...THE TORNADO WARNING FOR CENTRAL CLARKE AND EAST CENTRAL WASHINGTON COUNTIES IS CANCELLED... A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT FRIDAY EVENING FOR SOUTHWESTERN ALABAMA AND SOUTHEAST MISSISSIPPI. LAT...LON 3143 8806 3153 8818 3182 8792 3159 8761 TIME...MOT...LOC 1843Z 234DEG 32KT 3156 8798 $$
The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 14, 10:41 PM CDT | Small Craft Advisory | MOB | 44 hr | |
| Apr 15, 10:20 AM CDT | Tornado Warning | MOB | Washington | 40 min |
| Apr 15, 10:50 AM CDT | Tornado Warning | MOB | Clarke, Washington | 40 min |
| Apr 15, 10:56 AM CDT | Tornado Warning | MOB | Choctaw | 49 min |
| Apr 15, 11:09 AM CDT | Tornado Warning | MOB | Washington | 51 min |
| Apr 15, 11:26 AM CDT | Tornado Warning | MOB | Clarke, Monroe | 49 min |
| Apr 15, 11:41 AM CDT | Tornado Warning | MOB | Choctaw | 64 min |
| Apr 15, 11:52 AM CDT | Tornado Warning | MOB | Choctaw, Clarke, Washington | 38 min |
| Apr 15, 12:07 PM CDT | Tornado Warning | MOB | Monroe | 38 min |
| Apr 15, 12:20 PM CDT | Tornado Warning | MOB | Choctaw, Clarke, Washington | 40 min |
| Apr 15, 12:35 PM CDT | Tornado Warning | MOB | Monroe, Wilcox | 24 min |
| Apr 15, 12:44 PM CDT | Tornado Warning | MOB | Washington | 46 min |
| Apr 15, 12:51 PM CDT | Tornado Warning | MOB | Clarke, Wilcox | 33 min |
| Apr 15, 1:09 PM CDT | Tornado Warning | MOB | Washington | 51 min |
| Apr 15, 1:46 PM CDT | Tornado Warning | MOB | Clarke, Washington | 44 min |
| Apr 15, 2:06 PM CDT | Severe Thunderstorm Warning | MOB | Choctaw | 27 min |
| Apr 15, 2:22 PM CDT | Tornado Warning | MOB | Clarke, Monroe, Wilcox | 38 min |
| Apr 15, 2:55 PM CDT | Tornado Warning | MOB | Monroe, Wilcox | 50 min |
| Apr 15, 3:18 PM CDT | Tornado Warning | MOB | Butler, Conecuh, Monroe, Wilcox | 57 min |
| Apr 15, 3:41 PM CDT | Tornado Warning | MOB | Clarke, Washington | 32 min |
| Apr 15, 4:02 PM CDT | Tornado Warning | MOB | Choctaw | 58 min |
| Apr 15, 4:27 PM CDT | Tornado Warning | MOB | Clarke, Monroe | 48 min |
| Apr 15, 4:57 PM CDT | Tornado Warning | MOB | Choctaw | 42 min |
| Apr 15, 5:09 PM CDT | Tornado Warning | MOB | Butler, Conecuh, Monroe, Wilcox | 51 min |
| Apr 15, 5:44 PM CDT | Tornado Warning | MOB | Monroe, Wilcox | 31 min |
| Apr 15, 5:47 PM CDT | Tornado Warning | MOB | Choctaw | 58 min |
| Apr 15, 5:54 PM CDT | Tornado Warning | MOB | Wilcox | 51 min |
| Apr 15, 5:59 PM CDT | Tornado Warning | MOB | Butler | 26 min |
| Apr 15, 6:23 PM CDT | Tornado Warning | MOB | Wilcox | 32 min |
| Apr 15, 6:34 PM CDT | Tornado Warning | MOB | Choctaw | 41 min |
| Apr 15, 6:44 PM CDT | Tornado Warning | MOB | Choctaw, Clarke, Washington | 61 min |
Nearby
Tornado Warnings in Alabama, 2011Every tornado warning in 2011Tornadoes in 2011
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.