Alert archive / Florida / Tornado Warnings in 2015

Tornado Warning 18, NWS Mobile, AL

November 18, 2015Okaloosa County, Florida

NWS Mobile, AL issued this tornado warning at Nov 18, 2015, 11:41 AM CST for Okaloosa County, Florida. It was in force for 30 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: Nov 18, 2015, 11:41 AM CST (17:41 UTC)
Expired: Nov 18, 2015, 12:11 PM CST
In force: 30 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

County Okaloosa County, FL

The radar

The Eglin Afb radar (KEVX), 50 km from the middle of the area, began a volume at 17:40 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
Nov 18, 8:25 AM CST	Tornado Watch	SPC	8 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 5.7 hours before the alert went out and 207 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 5 J/kg
Mixed-layer CIN: -62 J/kg
Mixed-layer LCL: 674 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 219 m²/s²
0-3 km storm-relative helicity: 261 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

475 
WFUS54 KMOB 181741
TORMOB
FLC091-181830-
/O.NEW.KMOB.TO.W.0018.151118T1741Z-151118T1830Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1141 AM CST WED NOV 18 2015

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* TORNADO WARNING FOR...
  EAST CENTRAL OKALOOSA COUNTY IN NORTHWESTERN FLORIDA...

* UNTIL 1230 PM CST
    
* AT 1140 AM CST...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED NEAR NICEVILLE...MOVING NORTHEAST AT 30 MPH.

  HAZARD...TORNADO. 

  SOURCE...RADAR INDICATED ROTATION. 

  IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT 
           SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. 
           DAMAGE TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR.  TREE 
           DAMAGE IS LIKELY. 

* THIS TORNADIC THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF
  EAST CENTRAL OKALOOSA COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF YOU ARE OUTDOORS...IN A
MOBILE HOME...OR IN A VEHICLE...MOVE TO THE CLOSEST SUBSTANTIAL
SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3047 8640 3049 8645 3050 8645 3050 8642
      3051 8642 3051 8645 3050 8646 3052 8649
      3052 8650 3054 8655 3085 8644 3085 8639
TIME...MOT...LOC 1740Z 206DEG 28KT 3056 8643 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

BUTTS

2 follow-up statements

126 
WWUS54 KMOB 181751
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1151 AM CST WED NOV 18 2015

FLC091-181830-
/O.CON.KMOB.TO.W.0018.000000T0000Z-151118T1830Z/
OKALOOSA FL-
1151 AM CST WED NOV 18 2015

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1230 PM CST FOR EAST
CENTRAL OKALOOSA COUNTY...
    
AT 1151 AM CST...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED 7 MILES NORTHEAST OF NICEVILLE...MOVING NORTHEAST AT 20
MPH.

HAZARD...TORNADO. 

SOURCE...RADAR INDICATED ROTATION. 

IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT 
         SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE 
         TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR.  TREE DAMAGE IS 
         LIKELY. 

THIS TORNADIC THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF
EAST CENTRAL OKALOOSA COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF YOU ARE OUTDOORS...IN A
MOBILE HOME...OR IN A VEHICLE...MOVE TO THE CLOSEST SUBSTANTIAL
SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.

STAY TUNED FOR FURTHER UPDATES FROM YOUR NATIONAL WEATHER SERVICE IN
MOBILE.

&&

LAT...LON 3047 8640 3049 8645 3050 8645 3050 8642
      3051 8642 3051 8645 3050 8646 3052 8649
      3052 8650 3055 8650 3080 8644 3080 8639
TIME...MOT...LOC 1751Z 205DEG 19KT 3061 8641 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

BUTTS

645 
WWUS54 KMOB 181811
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1211 PM CST WED NOV 18 2015

FLC091-181820-
/O.CAN.KMOB.TO.W.0018.000000T0000Z-151118T1830Z/
OKALOOSA FL-
1211 PM CST WED NOV 18 2015

...THE TORNADO WARNING FOR EAST CENTRAL OKALOOSA COUNTY IS
CANCELLED...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER APPEARS CAPABLE OF PRODUCING A TORNADO.
THEREFORE THE WARNING HAS BEEN CANCELLED.  HOWEVER GUSTY WINDS ARE
STILL POSSIBLE WITH THIS THUNDERSTORM.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM CST FOR NORTHWESTERN
FLORIDA.

STAY TUNED FOR FURTHER UPDATES FROM YOUR NATIONAL WEATHER SERVICE IN
MOBILE.

LAT...LON 3047 8640 3049 8645 3050 8645 3050 8642
      3051 8642 3051 8645 3050 8646 3052 8649
      3052 8650 3055 8650 3080 8644 3080 8639
TIME...MOT...LOC 1808Z 206DEG 28KT 3074 8633 

$$

BUTTS

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Nov 18, 1:27 AM CST	Special Weather Statement	MOB	Escambia	63 min
Nov 18, 1:36 AM CST	Severe Thunderstorm Warning	MOB	Escambia, Santa Rosa	39 min
Nov 18, 2:07 AM CST	Special Weather Statement	MOB	Escambia	53 min
Nov 18, 3:37 AM CST	Severe Thunderstorm Warning	MOB	Escambia	38 min
Nov 18, 3:38 AM CST	Tornado Warning	MOB	Escambia	13 min
Nov 18, 4:36 AM CST	Special Weather Statement	MOB	Escambia	54 min
Nov 18, 5:44 AM CST	Special Weather Statement	MOB	Escambia, Santa Rosa	61 min
Nov 18, 6:52 AM CST	Coastal Flood Advisory	MOB	Escambia, Okaloosa, Santa Rosa	11 hr
Nov 18, 6:53 AM CST	Special Weather Statement	MOB	Okaloosa	67 min
Nov 18, 7:00 AM CST	Special Weather Statement	MOB	Okaloosa	60 min
Nov 18, 7:07 AM CST	Severe Thunderstorm Warning	MOB	Escambia, Santa Rosa	13 min
Nov 18, 7:50 AM CST	Severe Thunderstorm Warning	MOB	Okaloosa	40 min
Nov 18, 8:57 AM CST	Special Weather Statement	MOB	Okaloosa	63 min
Nov 18, 9:09 AM CST	Severe Thunderstorm Warning	MOB	Okaloosa	51 min
Nov 18, 10:45 AM CST	Tornado Warning	MOB	Okaloosa	30 min
Nov 18, 10:57 AM CST	Severe Thunderstorm Warning	MOB	Escambia	48 min
Nov 18, 11:43 AM CST	Special Weather Statement	MOB	Escambia	47 min
Nov 18, 12:29 PM CST	Special Weather Statement	MOB	Santa Rosa	61 min

Nearby

Tornado Warnings in Florida, 2015 Every tornado warning in 2015 Tornadoes in 2015

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.