Alert archive / Alabama / Tornado Warnings in 2011
Tornado Warning 118, NWS Mobile, AL
NWS Mobile, AL issued this tornado warning at Sep 4, 2011, 4:15 PM CDT for Baldwin County, Escambia County, Alabama; Escambia County, Florida. It was in force for 60 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 4, 2011, 4:15 PM CDT (21:15 UTC)
- Expired
- Sep 4, 2011, 5:15 PM CDT
- In force
- 60 min
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
Counties Baldwin County, AL, Escambia County, AL, Escambia County, FL
The radar
The Mobile radar (KMOB), 69 km from the middle of the area, began a volume at 21:16 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 4, 3:47 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 9.3 hours before the alert went out and 217 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
- 2528 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 473 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 249 m²/s²
- 0-3 km storm-relative helicity
- 287 m²/s²
- Significant tornado parameter
- 3.0
- Supercell composite
- 18.9
The text
As transmitted, in the capitals the NWS used until 2016.
379 WFUS54 KMOB 042115 TORMOB ALC003-053-FLC033-042215- /O.NEW.KMOB.TO.W.0118.110904T2115Z-110904T2215Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE MOBILE AL 415 PM CDT SUN SEP 4 2011 THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A * TORNADO WARNING FOR... NORTHWESTERN ESCAMBIA COUNTY IN NORTHWEST FLORIDA... SOUTHWESTERN ESCAMBIA COUNTY IN SOUTH CENTRAL ALABAMA... CENTRAL BALDWIN COUNTY IN SOUTHWEST ALABAMA... * UNTIL 515 PM CDT * AT 412 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 8 MILES EAST OF ROBERTSDALE...OR 9 MILES NORTHEAST OF SUMMERDALE...MOVING NORTH AT 25 MPH. * LOCATIONS IMPACTED INCLUDE... POARCH CREEK RESERVATION... PERDIDO... I65 AND CR 1... I65 AND AL 21... ATMORE... THIS INCLUDES INTERSTATE 10 IN ALABAMA BETWEEN MILE MARKERS 49 AND 62. THIS INCLUDES INTERSTATE 65 BETWEEN MILE MARKERS 46 AND 58. PRECAUTIONARY/PREPAREDNESS ACTIONS... WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. IF YOU ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE INDOORS AND TO THE LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM WINDOWS. IF DRIVING...DO NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS. IF IN MANUFACTURED HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A STURDY 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 1000 PM CDT SUNDAY EVENING FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST MISSISSIPPI. && LAT...LON 3114 8763 3109 8732 3050 8750 3053 8771 TIME...MOT...LOC 2115Z 190DEG 23KT 3060 8759 $$
1 follow-up statement
093 WWUS54 KMOB 042150 SVSMOB SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 450 PM CDT SUN SEP 4 2011 ALC003-053-FLC033-042215- /O.CON.KMOB.TO.W.0118.000000T0000Z-110904T2215Z/ ESCAMBIA AL-ESCAMBIA FL-BALDWIN AL- 450 PM CDT SUN SEP 4 2011 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM CDT FOR CENTRAL BALDWIN...NORTHWESTERN ESCAMBIA AND SOUTHWESTERN ESCAMBIA COUNTIES... AT 445 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A TORNADO. THIS TORNADO WAS LOCATED 9 MILES SOUTHWEST OF ELSANOR...OR 7 MILES SOUTH OF ROBERTSDALE...MOVING NORTH AT 25 MPH. OTHER WEAKER CIRCULATIONS WERE NOTED FURTHER TO THE NORTH AND MAY FURTHER INTENSIFY. OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO GATESWOOD...ROSINTON...AND WALNUT HILL. PRECAUTIONARY/PREPAREDNESS ACTIONS... THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS. IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT SUNDAY EVENING FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST MISSISSIPPI. && LAT...LON 3114 8763 3109 8732 3050 8750 3053 8771 TIME...MOT...LOC 2148Z 193DEG 20KT 3049 8771 $$
The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 3, 7:53 PM CDT | Areal Flood Warning | MOB | Baldwin, Mobile | 6 hr |
| Sep 3, 8:02 PM CDT | Special Marine Warning | MOB | 43 min | |
| Sep 3, 8:24 PM CDT | Special Marine Warning | MOB | 51 min | |
| Sep 3, 9:11 PM CDT | River Flood Warning | MOB | Covington, Escambia | 12 hr |
| Sep 3, 10:34 PM CDT | Special Marine Warning | MOB | 41 min | |
| Sep 3, 11:11 PM CDT | Tornado Warning | MOB | Mobile | 64 min |
| Sep 3, 11:58 PM CDT | Tornado Warning | MOB | Mobile | 62 min |
| Sep 4, 12:13 AM CDT | Special Marine Warning | MOB | 2 hr | |
| Sep 4, 12:59 AM CDT | Tornado Warning | MOB | Mobile | 61 min |
| Sep 4, 1:14 AM CDT | Flash Flood Warning | MOB | Mobile | 3 hr |
| Sep 4, 1:40 AM CDT | Flash Flood Warning | MOB | Mobile | 3 hr |
| Sep 4, 1:59 AM CDT | Tornado Warning | MOB | Mobile | 45 min |
| Sep 4, 2:16 AM CDT | Special Marine Warning | MOB | 119 min | |
| Sep 4, 2:46 AM CDT | Tornado Warning | MOB | Baldwin | 59 min |
| Sep 4, 3:16 AM CDT | Special Marine Warning | MOB | 119 min | |
| Sep 4, 3:57 AM CDT | Tornado Warning | MOB | Baldwin | 42 min |
| Sep 4, 4:49 AM CDT | Special Marine Warning | MOB | 86 min | |
| Sep 4, 5:36 AM CDT | Flash Flood Warning | MOB | Covington, Escambia | 3 hr |
| Sep 4, 5:51 AM CDT | Special Marine Warning | MOB | 114 min | |
| Sep 4, 9:42 AM CDT | Special Marine Warning | MOB | 33 min | |
| Sep 4, 9:59 AM CDT | River Flood Warning | MOB | Choctaw, Clarke, Washington | 4 days |
| Sep 4, 9:59 AM CDT | River Flood Warning | MOB | Choctaw, Clarke, Washington | 5 days |
| Sep 4, 10:43 AM CDT | Special Marine Warning | MOB | 47 min | |
| Sep 4, 10:44 AM CDT | Special Marine Warning | MOB | 46 min | |
| Sep 4, 11:29 AM CDT | Special Marine Warning | MOB | 46 min | |
| Sep 4, 11:46 AM CDT | Tornado Warning | MOB | Baldwin, Mobile | 19 min |
| Sep 4, 12:12 PM CDT | Tornado Warning | MOB | Washington | 63 min |
| Sep 4, 12:58 PM CDT | Tornado Warning | MOB | Washington | 62 min |
| Sep 4, 1:20 PM CDT | Tornado Warning | MOB | Clarke, Washington | 55 min |
| Sep 4, 4:01 PM CDT | Tornado Warning | MOB | Choctaw, Clarke | 59 min |
| Sep 4, 4:09 PM CDT | Tornado Warning | MOB | Washington | 36 min |
| Sep 4, 4:28 PM CDT | Tornado Warning | MOB | Baldwin | 49 min |
| Sep 3, 9:11 PM CDT | River Flood Warning | MOB | Okaloosa, Santa Rosa | 12 hr |
| Sep 3, 9:11 PM CDT | River Flood Warning | MOB | Okaloosa | 49 hr |
| Sep 4, 4:15 AM CDT | Tornado Warning | MOB | Escambia, Okaloosa, Santa Rosa | 60 min |
| Sep 4, 5:04 AM CDT | Tornado Warning | MOB | Okaloosa | 41 min |
| Sep 4, 9:42 AM CDT | Tornado Warning | MOB | Okaloosa | 33 min |
Nearby
Tornado Warnings in Alabama, 2011Tornado Warnings in Florida, 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.