Alert archive / Florida / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 32, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at Jan 21, 2017, 10:28 AM CST for Okaloosa County, Florida. It was in force for 32 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
- Jan 21, 2017, 10:28 AM CST (16:28 UTC)
- Expired
- Jan 21, 2017, 11:00 AM CST
- In force
- 32 min
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Okaloosa County, FL
The radar
The Eglin Afb radar (KEVX), 50 km from the middle of the area, began a volume at 16:31 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 |
|---|---|---|---|
| Jan 21, 3:56 AM CST | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 4.5 hours before the alert went out and 203 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
- 352 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 613 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 139 m²/s²
- 0-3 km storm-relative helicity
- 217 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 2.0
The text
As transmitted.
779
WUUS54 KMOB 211628
SVRMOB
FLC091-211700-
/O.NEW.KMOB.SV.W.0032.170121T1628Z-170121T1700Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mobile AL
1028 AM CST SAT JAN 21 2017
The National Weather Service in Mobile has issued a
* Severe Thunderstorm Warning for...
Southeastern Okaloosa County in northwestern Florida...
* Until 1100 AM CST
* At 1028 AM CST, severe thunderstorms were located along a line
extending from 6 miles west of Eglin Air Force Base to Mary Esther,
moving east at 25 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Wright, Fort Walton Beach, Niceville, Destin, Eglin AFB,
Valparaiso, Mary Esther, Ocean City, Lake Lorraine, Shalimar and
Cinco Bayou.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
A tornado watch remains in effect until 1100 AM CST for northwestern
Florida.
LAT...LON 3034 8681 3065 8639 3046 8639 3047 8635
3048 8633 3047 8630 3048 8628 3044 8628
3042 8631 3042 8632 3039 8636 3040 8639
3038 8640 3038 8650 3028 8650
TIME...MOT...LOC 1628Z 271DEG 23KT 3061 8638 3039 8668
HAIL...<.75IN
WIND...60MPH
$$1 follow-up statement
121
WWUS54 KMOB 211654
SVSMOB
Severe Weather Statement
National Weather Service Mobile AL
1054 AM CST SAT JAN 21 2017
FLC091-211704-
/O.EXP.KMOB.SV.W.0032.000000T0000Z-170121T1700Z/
Okaloosa FL-
1054 AM CST SAT JAN 21 2017
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN OKALOOSA COUNTY
WILL EXPIRE AT 1100 AM CST...
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore the warning will be allowed to expire.
A tornado watch remains in effect until noon CST for northwestern
Florida.
LAT...LON 3034 8681 3065 8639 3046 8639 3047 8635
3048 8633 3047 8630 3048 8628 3044 8628
3042 8631 3042 8632 3039 8636 3040 8639
3038 8640 3038 8650 3028 8650
TIME...MOT...LOC 1654Z 271DEG 23KT 3061 8620 3039 8650
$$The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 20, 8:47 PM CST | River Flood Warning | MOB | Escambia | 25 hr |
| Jan 20, 8:48 PM CST | River Flood Warning | MOB | Okaloosa, Santa Rosa | 3 days |
| Jan 20, 8:49 PM CST | River Flood Warning | MOB | Okaloosa | 25 hr |
| Jan 20, 10:18 PM CST | Rip Current Statement | MOB | Escambia, Okaloosa, Santa Rosa | 56 hr |
| Jan 21, 7:28 AM CST | Wind Advisory | MOB | Escambia, Okaloosa, Santa Rosa | 4 hr |
| Jan 21, 9:14 AM CST | Special Weather Statement | MOB | Escambia, Okaloosa, Santa Rosa | 91 min |
| Jan 21, 9:25 AM CST | Severe Thunderstorm Warning | MOB | Okaloosa | 50 min |
| Jan 21, 9:56 AM CST | Severe Thunderstorm Warning | MOB | Okaloosa | 34 min |
Nearby
Severe Thunderstorm Warnings in Florida, 2017Every severe thunderstorm warning in 2017
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.