Alert archive / Florida / Tornado Warnings in 2019
Tornado Warning 57, NWS Mobile, AL
NWS Mobile, AL issued this tornado warning at Dec 17, 2019, 4:58 AM CST for Okaloosa County, Florida. It was in force for 14 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
- Dec 17, 2019, 4:58 AM CST (10:58 UTC)
- Expired
- Dec 17, 2019, 5:12 AM CST
- In force
- 14 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), 47 km from the middle of the area, began a volume at 10:59 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 nearest sounding before it
Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 11.0 hours before the alert went out and 198 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
- 786 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 138 m²/s²
- 0-3 km storm-relative helicity
- 205 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
178
WFUS54 KMOB 171058
TORMOB
FLC091-171130-
/O.NEW.KMOB.TO.W.0057.191217T1058Z-191217T1130Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Mobile AL
458 AM CST Tue Dec 17 2019
The National Weather Service in Mobile has issued a
* Tornado Warning for...
Southeastern Okaloosa County in northwestern Florida...
* Until 530 AM CST.
* At 457 AM CST, a severe thunderstorm capable of producing a tornado
was located 4 miles southwest of Destin, moving northeast at 40
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
southeastern 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 3030 8656 3035 8659 3046 8637 3046 8628
3040 8628 3039 8629 3040 8629 3040 8630
3041 8630 3041 8631 3042 8630 3042 8631
3038 8633 3040 8639 3035 8640
TIME...MOT...LOC 1057Z 243DEG 33KT 3034 8653
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
JLH2 follow-up statements
223
WWUS54 KMOB 171109
SVSMOB
Severe Weather Statement
National Weather Service Mobile AL
509 AM CST Tue Dec 17 2019
FLC091-171130-
/O.CON.KMOB.TO.W.0057.000000T0000Z-191217T1130Z/
Okaloosa FL-
509 AM CST Tue Dec 17 2019
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 530 AM CST FOR
SOUTHEASTERN OKALOOSA COUNTY...
At 509 AM CST, a severe thunderstorm capable of producing a tornado
was located over Destin, moving northeast at 20 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This tornadic thunderstorm will remain over mainly rural areas of
southeastern Okaloosa County.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 3039 8629 3040 8629 3041 8630 3042 8630
3042 8632 3038 8633 3039 8633 3038 8634
3040 8639 3035 8640 3034 8648 3038 8650
3046 8637 3046 8628 3040 8628
TIME...MOT...LOC 1109Z 240DEG 19KT 3038 8647
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
JLH298
WWUS54 KMOB 171112
SVSMOB
Severe Weather Statement
National Weather Service Mobile AL
512 AM CST Tue Dec 17 2019
FLC091-171122-
/O.CAN.KMOB.TO.W.0057.000000T0000Z-191217T1130Z/
Okaloosa FL-
512 AM CST Tue Dec 17 2019
...THE TORNADO WARNING FOR SOUTHEASTERN 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.
LAT...LON 3039 8629 3040 8629 3041 8630 3042 8630
3042 8632 3038 8633 3039 8633 3038 8634
3040 8639 3035 8640 3034 8648 3038 8650
3046 8637 3046 8628 3040 8628
TIME...MOT...LOC 1111Z 243DEG 33KT 3038 8646
$$
JLHThe office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 17, 1:05 AM CST | Special Weather Statement | MOB | Escambia | 25 min |
| Dec 17, 1:15 AM CST | Tornado Warning | MOB | Escambia, Santa Rosa | 30 min |
| Dec 17, 1:27 AM CST | Severe Thunderstorm Warning | MOB | Okaloosa | 48 min |
| Dec 17, 2:43 AM CST | Special Weather Statement | MOB | Santa Rosa | 32 min |
| Dec 17, 3:09 AM CST | Tornado Warning | MOB | Okaloosa | 21 min |
| Dec 17, 3:14 AM CST | Tornado Warning | MOB | Okaloosa, Santa Rosa | 61 min |
Nearby
Tornado Warnings in Florida, 2019Every tornado warning in 2019Tornadoes in 2019
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.