Alert archive / Florida / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 193, NWS Tallahassee, FL
NWS Tallahassee, FL issued this severe thunderstorm warning at Jul 22, 2020, 12:57 PM CDT for Bay County, Florida. It was in force for 48 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 22, 2020, 12:57 PM CDT (17:57 UTC)
- Expired
- Jul 22, 2020, 1:45 PM CDT
- In force
- 48 min
- Issued by
- NWS Tallahassee, FL
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Bay County, FL
The radar
The Eglin Afb radar (KEVX), 46 km from the middle of the area, began a volume at 17:59 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 12:00Z, 6.0 hours before the alert went out and 129 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
- 38 J/kg
- Mixed-layer CIN
- -154 J/kg
- Mixed-layer LCL
- 1298 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- -51 m²/s²
- 0-3 km storm-relative helicity
- -40 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Tallahassee, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 22, 11:49 AM CDT, 1 hour 8 minutes earlier.
Area forecast discussion, Jul 22, 11:49 AM CDT, 1 hour 8 minutes before
Area Forecast Discussion
National Weather Service Tallahassee FL
1249 PM EDT Wed Jul 22 2020
.AVIATION...
[Through 18z Thursday] Scattered afternoon convection will
diminish this evening. TLH and VLD appear to have the best chance
of seeing thunderstorms out of the TAF airports. VFR conditions
are expected to prevail away from convection.
&&
.PREV DISCUSSION [1015 AM EDT]...
.NEAR TERM [Today Through Tonight]...
The western extension of the Bermuda ridge, surface an aloft, will
keep a moist easterly flow across our region today. It is this
easterly flow that will also continue to track the tropical wave and
its associated moisture toward the western Gulf of Mexico by
tonight. The best chance for afternoon convection will once again be
across the Florida zones, especially the eastern Big Bend with the
late afternoon/early evening arrival of the east coast sea breeze.
Strong gusty winds may accompany a few of these storms. Highs
will be in the lower to mid 90s with lows in the lower to mid 70s.
.SHORT TERM [Tomorrow Through Friday]...
In the upper levels, a ridge will be over the Central U.S. A trough
is over the Northeast. At the surface, high pressure is centered far
out in the Atlantic. A disturbance in the Central Gulf of Mexico
will move westward towards Texas. Low-level flow will be
southeasterly. With precipitable water values around 2 inches,
showers and thunderstorms will be scattered in the afternoon and
evening hours. Afternoon highs will be in the mid 90s. Lows will be
in the 70s.
.LONG TERM [Friday Night Through Wednesday]...
In the upper levels, a ridge will be over the Southeast until a
trough digs into the Southeast midweek. At the surface, high
pressure will be centered far out in the Atlantic. A disturbance in
the Northwestern Gulf of Mexico will continue to move westward. A
weak cold front will approach the region midweek. POPs will be high
every afternoon/evening (50 to 60 percent) due to deep layer
moisture advection. Afternoon highs will be in the mid 90s. Lows
will be in the 70s.
.MARINE...
Southeasterly winds will be 15 to 20 knots through tomorrow. Seas
will be elevated today and tomorrow as a disturbance in the Central
Gulf of Mexico moves westward. Southeasterly winds will be light to
moderate on Friday and through the weekend. Showers and
thunderstorms will be scattered through the weekend.
.FIRE WEATHER...
Aside from high afternoon dispersion values today and Thursday,
there are no other immediate fire weather concerns.
.HYDROLOGY...
Forecast rainfall totals for the next five days are around one inch
or less. Higher amounts locally are possible with stronger storms.
Scattered showers and thunderstorms are expected every
afternoon/evening. Widespread flooding is not expected.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not requested. However, spotters are always
encouraged to safely report significant weather conditions when they
occur (while following all local, state, and CDC guidelines) by
calling the office or tweeting us @NWSTallahassee.
&&
.PRELIMINARY POINT TEMPS/POPS...
Tallahassee 94 74 94 74 95 / 60 30 60 20 40
Panama City 90 76 90 76 91 / 40 30 50 30 50
Dothan 93 72 93 73 94 / 40 30 30 10 50
Albany 94 74 96 74 95 / 30 30 30 10 40
Valdosta 92 74 93 73 94 / 40 20 60 10 40
Cross City 92 74 93 72 95 / 60 20 70 10 40
Apalachicola 87 77 88 77 89 / 40 40 50 30 50
&&
.TAE WATCHES/WARNINGS/ADVISORIES...
FL...High Rip Current Risk through late Friday night for Coastal Bay-
Coastal Franklin-Coastal Gulf.
GA...None.
AL...None.
GM...None.
&&
NEAR TERM...Barry
SHORT TERM...McD
LONG TERM...McD
AVIATION...DVD
MARINE...McD
FIRE WEATHER...Barry
HYDROLOGY...McDIn the hours before
Special weather statement, Jul 22, 12:48 PM CDT, 9 minutes before
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</html>The office that day
Everything else NWS Tallahassee, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 22, 2:39 AM CDT | Rip Current Statement | TAE | Bay, Franklin, Gulf, Walton | 4 days |
| Jul 22, 12:47 PM CDT | Special Marine Warning | TAE | 58 min | |
| Jul 22, 12:48 PM CDT | Special Weather Statement | TAE | Bay | 27 min |
| Jul 22, 1:30 PM CDT | Special Weather Statement | TAE | Walton | 45 min |
| Jul 22, 1:33 PM CDT | Special Marine Warning | TAE | 42 min | |
| Jul 22, 1:36 PM CDT | Special Weather Statement | TAE | Lafayette | 54 min |
| Jul 22, 1:58 PM CDT | Special Marine Warning | TAE | 3 hr | |
| Jul 22, 2:06 PM CDT | Severe Thunderstorm Warning | TAE | Lafayette, Taylor | 69 min |
| Jul 22, 2:21 PM CDT | Special Weather Statement | TAE | Dixie | 39 min |
| Jul 22, 2:57 PM CDT | Severe Thunderstorm Warning | TAE | Franklin, Gadsden, Jefferson, Leon, Liberty, Madison and 1 more | 93 min |
| Jul 22, 3:08 PM CDT | Special Marine Warning | TAE | 2 hr | |
| Jul 22, 4:10 PM CDT | Severe Thunderstorm Warning | TAE | Calhoun, Franklin, Gadsden, Gulf, Jackson, Leon and 2 more | 80 min |
| Jul 22, 4:24 PM CDT | Special Weather Statement | TAE | Bay, Gulf | 51 min |
| Jul 22, 4:58 PM CDT | Special Marine Warning | TAE | 2 hr | |
| Jul 22, 5:06 PM CDT | Severe Thunderstorm Warning | TAE | Bay, Calhoun, Gulf, Holmes, Jackson, Washington | 69 min |
| Jul 22, 5:47 PM CDT | Severe Thunderstorm Warning | TAE | Bay, Holmes, Walton, Washington | 88 min |
| Jul 22, 5:50 PM CDT | Special Weather Statement | TAE | Geneva, Houston | 40 min |
| Jul 22, 6:18 PM CDT | Special Weather Statement | TAE | Coffee, Dale, Henry | 42 min |
Nearby
Severe Thunderstorm Warnings in Florida, 2020Every severe thunderstorm warning 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.