Alert archive / Florida / Special Weather Statements in 2017
Special Weather Statement, NWS Jacksonville, FL
NWS Jacksonville, FL issued this special weather statement at Aug 6, 2017, 4:21 PM EDT for Alachua County, Florida. It was in force for 24 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
- Aug 6, 2017, 4:21 PM EDT (20:21 UTC)
- Expired
- Aug 6, 2017, 4:45 PM EDT
- In force
- 24 min
- Issued by
- NWS Jacksonville, FL
County Alachua County, FL
The radar
The Jacksonville radar (KJAX), 129 km from the middle of the area, began a volume at 20:25 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
Jacksonville, FL (KJAX), launched 12:00Z, 8.4 hours before the alert went out and 131 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
- 1140 J/kg
- Mixed-layer CIN
- -56 J/kg
- Mixed-layer LCL
- 913 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- -10 m²/s²
- 0-3 km storm-relative helicity
- 6 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
241
WWUS82 KJAX 062021
SPSJAX
Special Weather Statement
National Weather Service Jacksonville FL
421 PM EDT SUN AUG 6 2017
FLZ036-062045-
Alachua FL-
421 PM EDT SUN AUG 6 2017
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN ALACHUA COUNTY UNTIL
445 PM EDT...
At 420 PM EDT, Doppler radar was tracking a strong thunderstorm near
East Bronson, or near Bronson, moving northeast at 10 mph.
Wind gusts of 45 to 55 mph can be expected along with possible minor
wind damage. Pea size hail is also possible
Locations impacted include...
Archer, Newberry and Micanopy.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 2954 8256 2954 8265 2956 8266 2961 8265
2978 8251 2950 8224 2948 8226 2948 8255
TIME...MOT...LOC 2020Z 232DEG 10KT 2948 8254
$$
ELSENHEIMERThe office that day
Everything else NWS Jacksonville, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 6, 4:48 PM EDT | Special Weather Statement | JAX | Alachua | 27 min |
| Aug 6, 5:52 PM EDT | Special Weather Statement | JAX | Duval | 23 min |
| Aug 6, 5:56 PM EDT | Special Weather Statement | JAX | Union | 34 min |
| Aug 6, 6:15 PM EDT | Special Weather Statement | JAX | Nassau | 30 min |
| Aug 6, 6:29 PM EDT | Severe Thunderstorm Warning | JAX | Duval, Nassau | 19 min |
| Aug 6, 6:45 PM EDT | Special Weather Statement | JAX | Baker, Columbia | 45 min |
| Aug 6, 6:59 PM EDT | Special Weather Statement | JAX | Nassau | 46 min |
| Aug 6, 7:18 PM EDT | Special Weather Statement | JAX | Baker | 27 min |
| Aug 6, 4:17 PM EDT | Special Weather Statement | JAX | Camden | 28 min |
| Aug 6, 4:52 PM EDT | Special Weather Statement | JAX | Glynn | 38 min |
| Aug 6, 7:34 PM EDT | Special Weather Statement | JAX | Camden | 26 min |
Nearby
Special Weather Statements in Florida, 2017Every special weather statement in 2017
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.