Alert archive / Mississippi / Tornado Warnings in 2011
Tornado Warning 121, NWS Mobile, AL
NWS Mobile, AL issued this tornado warning at Sep 4, 2011, 8:15 PM CDT for Perry County, Mississippi. It was in force for 45 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, 8:15 PM CDT (01:15 UTC)
- Expired
- Sep 4, 2011, 9:00 PM CDT
- In force
- 45 min
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
County Perry County, MS
The radar
The Mobile radar (KMOB), 101 km from the middle of the area, began a volume at 01:17 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 00:00Z, 1.3 hours before the alert went out and 123 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
- 1653 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 616 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 164 m²/s²
- 0-3 km storm-relative helicity
- 188 m²/s²
- Significant tornado parameter
- 1.0
- Supercell composite
- 6.8
The text
As transmitted, in the capitals the NWS used until 2016.
261 WFUS54 KMOB 050115 TORMOB MSC111-050200- /O.NEW.KMOB.TO.W.0121.110905T0115Z-110905T0200Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE MOBILE AL 815 PM CDT SUN SEP 4 2011 THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A * TORNADO WARNING FOR... WESTERN PERRY COUNTY IN SOUTHEAST MISSISSIPPI... * UNTIL 900 PM CDT * AT 812 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 8 MILES NORTH OF WIGGINS...OR 13 MILES NORTH OF PERKINSTON...MOVING NORTH AT 30 MPH. * LOCATIONS IMPACTED INCLUDE... NEW AUGUSTA... PRECAUTIONARY/PREPAREDNESS ACTIONS... HEAVY RAINFALL MAY OBSCURE THIS TORNADO. TAKE COVER NOW! IF YOU WAIT TO SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A SAFE PLACE. A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT SUNDAY EVENING FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST MISSISSIPPI. && LAT...LON 3142 8915 3143 8895 3093 8904 3093 8914 TIME...MOT...LOC 0115Z 182DEG 24KT 3099 8912 $$
3 follow-up statements
264 WWUS54 KMOB 050126 SVSMOB SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 826 PM CDT SUN SEP 4 2011 MSC111-050200- /O.CON.KMOB.TO.W.0121.000000T0000Z-110905T0200Z/ PERRY MS- 826 PM CDT SUN SEP 4 2011 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 900 PM CDT FOR WESTERN PERRY COUNTY... AT 821 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A POSSIBLE TORNADO. A STRONG CIRCULATION WAS LOCATED 7 MILES SOUTHWEST OF REDHILL...OR 13 MILES NORTH OF WIGGINS...MOVING NORTH AT 35 MPH. OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO NEW AUGUSTA...MAHNED...BELLEVILLE...INDIAN SPRINGS...CORINTH... RUNNELSTOWN AND TALLAHALA PRECAUTIONARY/PREPAREDNESS ACTIONS... HEAVY RAINFALL MAY OBSCURE THIS TORNADO. TAKE COVER NOW! IF YOU WAIT TO SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A SAFE PLACE. A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT SUNDAY EVENING FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST MISSISSIPPI. && LAT...LON 3102 8907 3102 8914 3142 8915 3143 8895 TIME...MOT...LOC 0126Z 182DEG 31KT 3109 8912 $$
167 WWUS54 KMOB 050136 SVSMOB SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 836 PM CDT SUN SEP 4 2011 MSC111-050200- /O.CON.KMOB.TO.W.0121.000000T0000Z-110905T0200Z/ PERRY MS- 836 PM CDT SUN SEP 4 2011 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 900 PM CDT FOR NORTHWESTERN PERRY COUNTY... AT 831 PM CDT...A VERY STRONG LOW LEVEL CIRCULATION AS DETECTED A FEW MILES WEST OF RED HILL. THIS TORNADO WAS MOVING NORTH AT 30 MPH. THIS IS A SERIOUS SITUATION. OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO NEW AUGUSTA...MAHNED...BELLEVILLE...INDIAN SPRINGS...CORINTH...TALLAHALA AND RUNNELSTOWN...OR MAINLY RURAL FAR WESTERN PERRY COUNTY. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER NOW! A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT SUNDAY EVENING FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST MISSISSIPPI. && LAT...LON 3108 8906 3109 8914 3142 8915 3143 8895 TIME...MOT...LOC 0134Z 182DEG 24KT 3113 8912 $$
823 WWUS54 KMOB 050156 SVSMOB SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 856 PM CDT SUN SEP 4 2011 MSC111-050200- /O.CON.KMOB.TO.W.0121.000000T0000Z-110905T0200Z/ PERRY MS- 856 PM CDT SUN SEP 4 2011 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 900 PM CDT FOR NORTHWESTERN PERRY COUNTY... AT 854 PM CDT...A STRONG LOW LEVEL CIRCULATION...POSSIBLY A TORNADO...WAS LOCATED NEAR INDIAN SPRINGS...OR 8 MILES SOUTHEAST OF PETAL...MOVING NORTH AT 30 MPH. OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO CORINTH...TALLAHALA AND RUNNELSTOWN PRECAUTIONARY/PREPAREDNESS ACTIONS... A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT SUNDAY EVENING FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST MISSISSIPPI. && LAT...LON 3127 8907 3126 8914 3142 8915 3143 8901 TIME...MOT...LOC 0155Z 182DEG 24KT 3129 8913 $$
The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 4, 7:05 PM CDT | Tornado Warning | MOB | Perry, Stone | 28 min |
| Sep 4, 8:28 PM CDT | Tornado Warning | MOB | Wayne | 62 min |
| Sep 4, 9:58 PM CDT | Wind Advisory | MOB | George, Greene, Perry, Stone, Wayne | 24 hr |
| Sep 5, 4:40 AM CDT | Tornado Warning | MOB | George, Greene | 50 min |
| Sep 5, 5:24 AM CDT | Tornado Warning | MOB | Greene, Wayne | 51 min |
Nearby
Tornado Warnings in Mississippi, 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.