Alert archive / Florida / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 102, NWS Jacksonville, FL

June 14, 2001Clay County, Duval County, Saint Johns County, Florida

NWS Jacksonville, FL issued this severe thunderstorm warning at Jun 14, 2001, 6:10 PM EDT for Clay County, Duval County, Saint Johns County, Florida. It was in force for 50 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jun 14, 2001, 6:10 PM EDT (22:10 UTC)
Expired: Jun 14, 2001, 7:00 PM EDT
In force: 50 min
Issued by: NWS Jacksonville, FL
Area: Whole counties

Counties Clay County, FL, Duval County, FL, Saint Johns County, FL

The radar

The Jacksonville radar (KJAX), 46 km from the middle of the area, began a volume at 22:13 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
Jun 14, 6:30 PM EDT	Thunderstorm Wind	Jacksonville, FL	Numerous reports of large trees and power lines were blown down.
Jun 14, 6:45 PM EDT	Thunderstorm Wind	Ponte Vedra Beach, FL	Large trees were blown down across Solano Road just West of A1A.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Jacksonville, FL (KJAX), launched 12:00Z, 10.2 hours before the alert went out and 47 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1497 J/kg
Mixed-layer CIN: -63 J/kg
Mixed-layer LCL: 789 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 27 m²/s²
0-3 km storm-relative helicity: -2 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 Jacksonville, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 14, 3:00 PM EDT, 3 hours 10 minutes earlier.

Area forecast discussion, Jun 14, 3:00 PM EDT, 3 hours 10 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSONVILLE FL
300 PM EDT THU JUN 14 2001

CURRENTLY...WATER VAPOR AND IR SATELLITE IMAGERY SHOWED A WEAK VORT
MID TO UPPER LEVEL VORT SWINGING ACROSS SOUTHEASTERN GEORGIA AND
NORTHEASTERN FLORIDA. THE GULF SEA BREEZE IS IN FULL SWING...WITH
THE ATLANTIC SEA BREEZE ATTEMPTING TO MOVE AWAY FROM THE COAST IN
FLAGLER AND ST JOHNS COUNTIES. EXPECT THE EAST COAST SEABREEZE TO
ENHANCE STORMS IN THAT AREA LATER THIS AFTERNOON AND EARLY EVENING.
HIGH PRESSURE WILL BUILD ACROSS THE AREA INTO THE WEEKEND. A WEAK
COLD FRONT WILL APPROACH AND MOVE ACROSS THE AREA BY LATE WEEKEND
AND EARLY NEXT WEEK...HOWEVER  WITH THE SEABREEZE FRONTS BEING THE
PRIMARY FOCUS FOR SHOWER ACTIVITY...WILL GO WITH CHANCE POPS FOR
AFTERNOON AND EVENING THUNDERSTORMS EACH DAY FOR THIS PACKAGE.

PRELIM
AMG 72/92/72/92 3334
SSI 74/90/73/89 3334
JAX 73/93/74/91 3535
GNV 72/94/92/94 3434 33

.JAX...
.FL...NONE.
.GA...NONE.

BLS

The office that day

Everything else NWS Jacksonville, FL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 14, 2:06 PM EDT	Severe Thunderstorm Warning	JAX	Marion	39 min
Jun 14, 2:45 PM EDT	Severe Thunderstorm Warning	JAX	Marion	45 min
Jun 14, 2:57 PM EDT	Severe Thunderstorm Warning	JAX	Flagler, Putnam	63 min
Jun 14, 3:07 PM EDT	Severe Thunderstorm Warning	JAX	Suwannee	38 min
Jun 14, 3:58 PM EDT	Severe Thunderstorm Warning	JAX	Putnam	47 min
Jun 14, 4:46 PM EDT	Severe Thunderstorm Warning	JAX	Saint Johns	44 min
Jun 14, 5:37 PM EDT	Severe Thunderstorm Warning	JAX	Duval	38 min
Jun 14, 6:03 PM EDT	Severe Thunderstorm Warning	JAX	Nassau	42 min
Jun 14, 6:21 PM EDT	Severe Thunderstorm Warning	JAX	Marion	54 min
Jun 14, 4:49 PM EDT	Severe Thunderstorm Warning	JAX	Atkinson, Clinch, Ware	56 min
Jun 14, 4:49 PM EDT	Severe Thunderstorm Warning	JAX	Coffee	56 min

Nearby

Severe Thunderstorm Warnings in Florida, 2001 Every severe thunderstorm warning in 2001

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.