Alert archive / Florida / Severe Thunderstorm Warnings in 2014
Severe Thunderstorm Warning 139, NWS Tallahassee, FL
NWS Tallahassee, FL issued this severe thunderstorm warning at Jun 12, 2014, 6:59 PM EDT for Jefferson County, Florida. It was in force for 31 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
- Jun 12, 2014, 6:59 PM EDT (22:59 UTC)
- Expired
- Jun 12, 2014, 7:30 PM EDT
- In force
- 31 min
- Issued by
- NWS Tallahassee, FL
- Area
- Storm-based polygon
County Jefferson County, FL
The radar
The Tallahassee radar (KTLH), 41 km from the middle of the area, began a volume at 23:02 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, 11.0 hours before the alert went out and 38 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
- 1860 J/kg
- Mixed-layer CIN
- -13 J/kg
- Mixed-layer LCL
- 707 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 61 m²/s²
- 0-3 km storm-relative helicity
- 86 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 Jun 12, 1:45 PM EDT, 5 hours 14 minutes earlier.
Area forecast discussion, Jun 12, 1:45 PM EDT, 5 hours 14 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 |
|---|---|---|---|---|
| Jun 12, 3:41 AM EDT | Rip Current Statement | TAE | Bay, Gulf, Walton | 20 hr |
| Jun 12, 8:38 AM EDT | Special Weather Statement | TAE | Gulf | 37 min |
| Jun 12, 9:12 AM EDT | Severe Thunderstorm Warning | TAE | Liberty, Wakulla | 48 min |
| Jun 12, 9:59 AM EDT | Severe Thunderstorm Warning | TAE | Wakulla | 31 min |
| Jun 12, 10:09 AM EDT | Special Weather Statement | TAE | Leon | 66 min |
| Jun 12, 11:04 AM EDT | Special Weather Statement | TAE | Jefferson | 56 min |
| Jun 12, 11:21 AM EDT | Special Weather Statement | TAE | Leon | 24 min |
| Jun 12, 11:41 AM EDT | Severe Thunderstorm Warning | TAE | Jefferson, Leon, Madison | 34 min |
Nearby
Severe Thunderstorm Warnings in Florida, 2014Every severe thunderstorm warning in 2014
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.