Alert archive / Florida / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 170, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at Jul 28, 2021, 3:37 PM CDT for Okaloosa County, Santa Rosa County, Florida. It was in force for 23 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
- Jul 28, 2021, 3:37 PM CDT (20:37 UTC)
- Expired
- Jul 28, 2021, 4:00 PM CDT
- In force
- 23 min
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Okaloosa County, FL, Santa Rosa County, FL
The radar
The Eglin Afb radar (KEVX), 92 km from the middle of the area, began a volume at 20:39 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 12:00Z, 8.6 hours before the alert went out and 248 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
- 679 J/kg
- Mixed-layer CIN
- -82 J/kg
- Mixed-layer LCL
- 861 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 24 m²/s²
- 0-3 km storm-relative helicity
- 20 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
738 WUUS54 KMOB 282037 SVRMOB FLC091-113-282100- /O.NEW.KMOB.SV.W.0170.210728T2037Z-210728T2100Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Mobile AL 337 PM CDT Wed Jul 28 2021 The National Weather Service in Mobile has issued a * Severe Thunderstorm Warning for... West central Okaloosa County in northwestern Florida... East central Santa Rosa County in northwestern Florida... * Until 400 PM CDT. * At 337 PM CDT, a severe thunderstorm was located 8 miles east of Roeville, or 11 miles east of Milton, and is nearly stationary. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Roeville. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 3079 8691 3073 8671 3055 8678 3062 8704 TIME...MOT...LOC 2037Z 024DEG 3KT 3069 8685 HAIL...0.75IN WIND...60MPH $$ JLH
The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 28, 1:46 PM CDT | Heat Advisory | MOB | Escambia, Okaloosa, Santa Rosa | 44 hr |
| Jul 28, 1:46 PM CDT | Heat Advisory | MOB | Escambia, Okaloosa, Santa Rosa | 4 days |
| Jul 28, 3:21 PM CDT | Special Weather Statement | MOB | Okaloosa | 39 min |
| Jul 28, 3:27 PM CDT | Special Weather Statement | MOB | Santa Rosa | 48 min |
| Jul 28, 3:55 PM CDT | Special Weather Statement | MOB | Okaloosa | 50 min |
| Jul 28, 3:58 PM CDT | Severe Thunderstorm Warning | MOB | Santa Rosa | 32 min |
| Jul 28, 4:08 PM CDT | Areal Flood Advisory | MOB | Okaloosa | 14 min |
| Jul 28, 4:22 PM CDT | Flash Flood Warning | MOB | Okaloosa | 5 hr |
| Jul 28, 4:32 PM CDT | Special Weather Statement | MOB | Santa Rosa | 43 min |
| Jul 28, 4:33 PM CDT | Areal Flood Advisory | MOB | Santa Rosa | 3 hr |
| Jul 28, 5:16 PM CDT | Areal Flood Advisory | MOB | Okaloosa | 3 hr |
| Jul 28, 5:39 PM CDT | Areal Flood Advisory | MOB | Okaloosa, Santa Rosa | 3 hr |
| Jul 28, 6:48 PM CDT | Areal Flood Advisory | MOB | Escambia, Santa Rosa | 3 hr |
Nearby
Severe Thunderstorm Warnings in Florida, 2021Every severe thunderstorm warning in 2021
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.