Alert archive / Florida / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 21, NWS Jacksonville, FL
NWS Jacksonville, FL issued this severe thunderstorm warning at Mar 14, 2012, 8:14 PM EDT for Alachua County, Florida. It was in force for 20 min. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Mar 14, 2012, 8:14 PM EDT (00:14 UTC)
- Expired
- Mar 14, 2012, 8:34 PM EDT
- In force
- 20 min
- Issued by
- NWS Jacksonville, FL
- Area
- Storm-based polygon
County Alachua County, FL
The radar
The Jacksonville radar (KJAX), 133 km from the middle of the area, began a volume at 00:17 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 14, 8:16 PM EDT | HAIL 1 | 1 Nne Archer, FL | ONE INCH HAIL AT ARCHER RD AND SW 158TH STREET. |
| Mar 14, 8:20 PM EDT | HAIL 0.5 | Nnw Archer, FL | MARBLE SIZE HAIL REPORTED AT THE FAMILY DOLLAR STORE PARKING LOT. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Jacksonville, FL (KJAX), launched 00:00Z, 0.2 hours before the alert went out and 135 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
- 372 J/kg
- Mixed-layer CIN
- -116 J/kg
- Mixed-layer LCL
- 1348 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- -23 m²/s²
- 0-3 km storm-relative helicity
- 19 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.2
The text
As transmitted, in the capitals the NWS used until 2016.
805
WUUS52 KJAX 150014
SVRJAX
FLC001-150045-
/O.NEW.KJAX.SV.W.0021.120315T0014Z-120315T0045Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSONVILLE FL
814 PM EDT WED MAR 14 2012
THE NATIONAL WEATHER SERVICE IN JACKSONVILLE HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHERN ALACHUA COUNTY IN NORTHERN FLORIDA
* UNTIL 845 PM EDT
* AT 814 PM EDT...SKYWARN SPOTTERS REPORTED A SEVERE THUNDERSTORM
CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED
NEAR ARCHER...OR 11 MILES NORTHEAST OF BRONSON...AND MOVING
SOUTHWEST AT 20 MPH.
* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
ARCHER.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REPORT SEVERE WEATHER OR DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY
OR YOUR COUNTY EMERGENCY MANAGEMENT.
&&
LAT...LON 2948 8256 2954 8257 2958 8253 2953 8239
2948 8242 2948 8255
TIME...MOT...LOC 0014Z 034DEG 17KT 2953 8250
$$
TRABERT1 follow-up statement
049
WWUS52 KJAX 150034
SVSJAX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
834 PM EDT WED MAR 14 2012
FLC001-150045-
/O.CAN.KJAX.SV.W.0021.000000T0000Z-120315T0045Z/
ALACHUA FL-
834 PM EDT WED MAR 14 2012
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN ALACHUA COUNTY IS
CANCELLED...
REPORT SEVERE WEATHER OR DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY
OR YOUR COUNTY EMERGENCY MANAGEMENT.
LAT...LON 2948 8256 2954 8257 2958 8253 2953 8239
2948 8242 2948 8255
TIME...MOT...LOC 0035Z 034DEG 17KT 2945 8256
$$
TRABERTThe office that day
Everything else NWS Jacksonville, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 14, 8:38 PM EDT | Special Weather Statement | JAX | Alachua | 82 min |
Nearby
Severe Thunderstorm Warnings in Florida, 2012Every severe thunderstorm warning in 2012
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.