Alert archive / Florida / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 65, NWS Jacksonville, FL
NWS Jacksonville, FL issued this severe thunderstorm warning at May 13, 2009, 5:53 PM EDT for Alachua County, Gilchrist County, Florida. It was in force for 52 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
- May 13, 2009, 5:53 PM EDT (21:53 UTC)
- Expired
- May 13, 2009, 6:45 PM EDT
- In force
- 52 min
- Issued by
- NWS Jacksonville, FL
- Area
- Storm-based polygon
Counties Alachua County, FL, Gilchrist County, FL
The radar
The Jacksonville radar (KJAX), 121 km from the middle of the area, began a volume at 21:52 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
Tampa Bay, FL (KTBW), launched 12:00Z, 9.9 hours before the alert went out and 223 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
- 601 J/kg
- Mixed-layer CIN
- -71 J/kg
- Mixed-layer LCL
- 949 m above ground
- 0-6 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- 57 m²/s²
- 0-3 km storm-relative helicity
- 84 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The office that day
Everything else NWS Jacksonville, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 13, 1:03 PM EDT | Special Weather Statement | JAX | Marion | 87 min |
| May 13, 1:59 PM EDT | Special Weather Statement | JAX | Marion | 31 min |
| May 13, 2:34 PM EDT | Special Weather Statement | JAX | Putnam | 26 min |
| May 13, 2:52 PM EDT | Special Weather Statement | JAX | Marion | 23 min |
| May 13, 3:18 PM EDT | Special Weather Statement | JAX | Marion | 57 min |
| May 13, 3:52 PM EDT | Special Weather Statement | JAX | Putnam | 53 min |
| May 13, 4:14 PM EDT | Special Weather Statement | JAX | Citrus | 31 min |
| May 13, 4:50 PM EDT | Special Weather Statement | JAX | Putnam | 40 min |
| May 13, 4:51 PM EDT | Areal Flood Advisory | JAX | Marion | 54 min |
| May 13, 5:00 PM EDT | Areal Flood Advisory | JAX | Putnam | 60 min |
| May 13, 5:39 PM EDT | Special Weather Statement | JAX | Gilchrist | 36 min |
| May 13, 6:34 PM EDT | Special Weather Statement | JAX | Gilchrist | 26 min |
| May 13, 6:40 PM EDT | Areal Flood Advisory | JAX | Gilchrist | 2 hr |
| May 13, 6:54 PM EDT | Severe Thunderstorm Warning | JAX | Gilchrist, Suwannee | 34 min |
Nearby
Severe Thunderstorm Warnings in Florida, 2009Every severe thunderstorm warning in 2009
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.