Alert archive / Florida / Tornado Warnings in 2020

Tornado Warning 80, NWS Mobile, AL

October 28, 2020Okaloosa County, Florida

NWS Mobile, AL issued this tornado warning at Oct 28, 2020, 11:08 PM CDT for Okaloosa County, Florida. It was in force for 8 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: Oct 28, 2020, 11:08 PM CDT (04:08 UTC)
Expired: Oct 28, 2020, 11:16 PM CDT
In force: 8 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Okaloosa County, FL

The radar

The Eglin Afb radar (KEVX), 55 km from the middle of the area, began a volume at 04:07 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
Oct 28, 1:03 PM CDT	Tornado Watch	SPC	11 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 4.1 hours before the alert went out and 210 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: -98 J/kg
Mixed-layer LCL: 1015 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 124 m²/s²
0-3 km storm-relative helicity: 171 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

As transmitted.

986 
WFUS54 KMOB 290408
TORMOB
FLC091-290430-
/O.NEW.KMOB.TO.W.0080.201029T0408Z-201029T0430Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Mobile AL
1108 PM CDT Wed Oct 28 2020

The National Weather Service in Mobile has issued a

* Tornado Warning for...
  Northeastern Okaloosa County in northwestern Florida...

* Until 1130 PM CDT.
    
* At 1107 PM CDT, a severe thunderstorm capable of producing a
  tornado was located 6 miles north of Niceville, moving north at 60
  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
  northeastern 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 3054 8649 3055 8654 3083 8652 3091 8645
      3091 8639 3071 8639
TIME...MOT...LOC 0407Z 194DEG 53KT 3060 8650 

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

$$

Black

1 follow-up statement

370 
WWUS54 KMOB 290416
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
1116 PM CDT Wed Oct 28 2020

FLC091-290425-
/O.CAN.KMOB.TO.W.0080.000000T0000Z-201029T0430Z/
Okaloosa FL-
1116 PM CDT Wed Oct 28 2020

...THE TORNADO WARNING FOR NORTHEASTERN 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.

A Tornado Watch remains in effect until midnight CDT for northwestern
Florida.

LAT...LON 3054 8649 3055 8654 3083 8652 3091 8645
      3091 8639 3071 8639
TIME...MOT...LOC 0414Z 194DEG 53KT 3072 8646 

$$

Black

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 28, 7:11 PM CDT	Tornado Warning	MOB	Escambia, Santa Rosa	16 min

Nearby

Tornado Warnings in Florida, 2020 Every tornado warning in 2020 Tornadoes in 2020

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.