Alert archive / Florida / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 114, NWS Tallahassee, FL
NWS Tallahassee, FL issued this severe thunderstorm warning at Jul 3, 2018, 7:43 PM EDT for Jefferson County, Leon County, Florida. It was in force for 16 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 3, 2018, 7:43 PM EDT (23:43 UTC)
- Expired
- Jul 3, 2018, 7:59 PM EDT
- In force
- 16 min
- Issued by
- NWS Tallahassee, FL
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Jefferson County, FL, Leon County, FL
The radar
The Tallahassee radar (KTLH), 24 km from the middle of the area, began a volume at 23:46 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, 11.7 hours before the alert went out and 21 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
- 1618 J/kg
- Mixed-layer CIN
- -27 J/kg
- Mixed-layer LCL
- 796 m above ground
- 0-6 km bulk shear
- 5 kt
- 0-1 km storm-relative helicity
- -50 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 3, 7:24 PM EDT, 19 minutes earlier.
Area forecast discussion, Jul 3, 7:24 PM EDT, 19 minutes before
Area Forecast Discussion National Weather Service Tallahassee FL 724 PM EDT Tue Jul 3 2018 .AVIATION [Through 00Z Thursday]... TSRA persists around the TAF sites this evening with the most likely chance of affecting TLH and ABY over the next few hours. Should dissipate by 04z with scattered TSRA expected again Wednesday afternoon. Expect wind gusts and low vsbys with the TSRA, otherwise VFR conditions are expected. && .PREV DISCUSSION [250 PM EDT]... .NEAR TERM [Through Tonight]... Scattered showers and thunderstorms will continue to develop mainly along and west of the river this afternoon and move to the west. Then, we should see a broken line of showers and thunderstorms associated with the east coast sea breeze arrive late this afternoon over our easternmost zones. This convection is forecast by a few of the hi-res models to continue to move westward across the remainder of the CWA through the evening and possibly into the early morning hours. Pops will be in the 40-50% range until 06z. Lows will be in the lower 70s. .SHORT TERM [Wednesday Through Thursday Night]... A tropical upper tropospheric trough will move westward into the FL Peninsula on Wednesday afternoon and evening, with a surge of deep layer moisture just west of this feature moving into our area during these times. PW values around or over 2.0" will combine with sea breeze forcing and ample instability (SBCAPE 1500-2500 J/kg) to result in high coverage of showers and thunderstorms. Highest chances will be across the FL Big Bend and parts of SW Georgia, as the Atlantic sea breeze is projected to move into these areas during the late afternoon and early evening and enhance potential for showers/thunderstorms. However, during Wednesday evening after 00Z, chances of showers and storms should be much lower as the atmosphere is projected to stabilize behind the initial wave of showers/thunderstorms. Drier conditions are expected on Thursday as drier mid-level air moves over our area from the east behind the aforementioned upper trough. Still, some scattered showers and thunderstorms are possible during peak heating hours (afternoon and early evening) as the sea breeze moves inland. Highs on both Wednesday and Thursday will range from the upper 80s to lower 90s across our area. .LONG TERM [Friday Through Tuesday]... Another upper level low is expected to move westward across our area on Friday morning and afternoon, with seasonably moist conditions persisting throughout the day on Friday. This will result in decent coverage of scattered showers and thunderstorms across our area, especially during the afternoon and early evening as sea breeze forcing and instability are maximized. Even higher chances of showers and thunderstorms are expected this weekend as a weak surface trough/front drifts southward toward northern portions of our area. Ample deep layer moisture will persist from the weekend through early next week as well. As a result, showers and thunderstorms will be likely across our area on Saturday and Sunday, with high-end chances continuing through Monday and Tuesday. Highs will range from the upper 80s to lower 90s across our area for most of this period, but possibly remain in the mid-upper 80s on Sunday under more widespread cloud cover and showers/storms. .MARINE... Generally light winds around 10 knots or less and seas of 2 feet or less will continue through the next several days, along with persistent chances of showers and thunderstorms. .FIRE WEATHER... Hazardous fire weather conditions are not expected through the remainder of the week as RHs will remain above critical levels. An exception will be Wednesday afternoon, where high dispersions will be likely in the Florida Panhandle, generally west of the Apalachicola River. Chances for wetting rains will increase again on Wednesday, with chances persisting into the weekend. .HYDROLOGY... Rivers and streams are likely to remain below flood stage through the next few days; heavier rain from scattered showers and thunderstorms is generally expected to be short-lived. However, a few rivers/streams could continue to reach action stage at times, and minor flooding cannot be ruled out in isolated areas that receive more persistent showers and thunderstorms. .SPOTTER INFORMATION STATEMENT... Spotter activation is not requested. However, spotters are always encouraged to safely report significant weather conditions when they occur by calling the office or tweeting us @NWSTallahassee. && .PRELIMINARY POINT TEMPS/POPS... Tallahassee 73 89 71 90 72 / 40 70 20 30 20 Panama City 76 90 73 87 74 / 50 60 30 50 20 Dothan 73 90 72 89 72 / 50 50 40 20 20 Albany 74 90 72 91 73 / 40 60 30 20 20 Valdosta 72 87 70 90 71 / 40 70 20 40 20 Cross City 72 89 70 90 72 / 40 70 40 30 20 Apalachicola 75 87 74 86 75 / 50 40 30 30 20 && .TAE WATCHES/WARNINGS/ADVISORIES... FL...None. GA...None. AL...None. GM...None. && NEAR TERM...Barry SHORT TERM...Lahr LONG TERM...Lahr AVIATION...Fieux MARINE...Lahr FIRE WEATHER...Pullin HYDROLOGY...Lahr
In the hours before
Local storm report, Jul 3, 7:00 PM EDT, 43 minutes before
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</html>Special weather statement, Jul 3, 7:03 PM EDT, 40 minutes before
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</html>Special weather statement, Jul 3, 7:14 PM EDT, 29 minutes before
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</html>Special weather statement, Jul 3, 7:26 PM EDT, 17 minutes before
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</html>Special weather statement, Jul 3, 7:31 PM EDT, 12 minutes before
Special Weather Statement
National Weather Service Tallahassee FL
731 PM EDT TUE JUL 3 2018
GAZ145-040015-
Mitchell GA-
731 PM EDT TUE JUL 3 2018
...SIGNIFICANT WEATHER ADVISORY FOR MITCHELL COUNTY UNTIL 815 PM
EDT...
At 731 PM EDT, Doppler radar was tracking a strong thunderstorm 8
miles west of Doerun, or 9 miles northeast of Camilla, moving west at
20 mph.
Winds in excess of 40 mph will be possible with this storm.
Locations impacted include...
Pelham, Camilla, Sale City, Laney, Lester, Flint, Freeman, Mitchell
Co A/P, Branchville, Greenough, Hinsonton and Cotton.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 3138 8400 3116 8400 3108 8427 3108 8436
3122 8441 3124 8436 3126 8436 3128 8434
3131 8433 3131 8432 3132 8431 3132 8429
3134 8427
TIME...MOT...LOC 2331Z 072DEG 17KT 3128 8405
32Local storm report, Jul 3, 7:36 PM EDT, 7 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
736 PM EDT TUE JUL 3 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0536 PM TSTM WND DMG 2 SSE WEWAHITCHKA 30.09N 85.18W
07/03/2018 GULF FL TRAINED SPOTTER
1 TREE SNAPPED AT THE INTERSECTION OF SUNSET
DR AND TANGLEWOOD ST. PICTURE SENT BY
TRAINED SPOTTER.
&&
JPThe office that day
Everything else NWS Tallahassee, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 3, 4:15 PM EDT | Special Weather Statement | TAE | Dixie | 45 min |
| Jul 3, 5:14 PM EDT | Special Marine Warning | TAE | 46 min | |
| Jul 3, 5:20 PM EDT | Special Weather Statement | TAE | Calhoun | 40 min |
| Jul 3, 5:26 PM EDT | Severe Thunderstorm Warning | TAE | Calhoun, Gulf, Liberty | 49 min |
| Jul 3, 5:45 PM EDT | Special Marine Warning | TAE | 60 min | |
| Jul 3, 5:52 PM EDT | Special Weather Statement | TAE | Bay | 53 min |
| Jul 3, 6:02 PM EDT | Special Weather Statement | TAE | Madison | 43 min |
| Jul 3, 6:08 PM EDT | Special Weather Statement | TAE | Liberty | 52 min |
| Jul 3, 6:41 PM EDT | Special Weather Statement | TAE | Washington | 49 min |
| Jul 3, 6:47 PM EDT | Special Marine Warning | TAE | 58 min | |
| Jul 3, 7:03 PM EDT | Special Weather Statement | TAE | Taylor | 42 min |
| Jul 3, 7:14 PM EDT | Special Weather Statement | TAE | Holmes | 46 min |
| Jul 3, 7:26 PM EDT | Special Weather Statement | TAE | Jefferson | 34 min |
| Jul 3, 7:35 PM EDT | Severe Thunderstorm Warning | TAE | Taylor | 25 min |
| Jul 3, 7:43 PM EDT | Special Marine Warning | TAE | 92 min | |
| Jul 3, 7:58 PM EDT | Special Weather Statement | TAE | Holmes | 17 min |
| Jul 2, 8:41 PM EDT | Special Weather Statement | TAE | Lowndes | 49 min |
| Jul 2, 9:09 PM EDT | Severe Thunderstorm Warning | TAE | Lowndes | 36 min |
| Jul 2, 9:22 PM EDT | Special Weather Statement | TAE | Cook | 38 min |
| Jul 3, 7:31 PM EDT | Special Weather Statement | TAE | Mitchell | 44 min |
Nearby
Severe Thunderstorm Warnings in Florida, 2018Every severe thunderstorm warning in 2018
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.