Alert archive / Florida / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 163, NWS Jacksonville, FL

July 11, 2000Duval County, Nassau County, Florida

NWS Jacksonville, FL issued this severe thunderstorm warning at Jul 11, 2000, 7:13 PM EDT for Duval County, Nassau County, Florida. It was in force for 47 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: Jul 11, 2000, 7:13 PM EDT (23:13 UTC)
Expired: Jul 11, 2000, 8:00 PM EDT
In force: 47 min
Issued by: NWS Jacksonville, FL
Area: Whole counties

Counties Duval County, FL, Nassau County, FL

The radar

The Jacksonville radar (KJAX), 1 km from the middle of the area, began a volume at 23:14 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, 11.2 hours before the alert went out and 3 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: 727 J/kg
Mixed-layer CIN: -84 J/kg
Mixed-layer LCL: 995 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 40 m²/s²
0-3 km storm-relative helicity: 133 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 Jul 11, 2:40 PM EDT, 4 hours 33 minutes earlier.

Area forecast discussion, Jul 11, 2:40 PM EDT, 4 hours 33 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSONVILLE FL
240 PM EDT TUE JUL 11 2000

CURRENTLY...WATER VAPOR LOOPS SHOW THAT SEVERAL SHORT WAVES CONTINUE
TO RIDE OVER THE UPPER RIDGE OVER THE CENTER OF THE U. S. AND MOVE
SOUTHEAST ACROSS THE OHIO VALLEY AND MID-ATLANTIC STATES. AT THE
SURFACE A TROUGH WAS WORKING ITS WAY ACROSS SOUTHEAST ACROSS
SOUTHEASTERN GEORGIA AND NORTHEASTERN FLORIDA. THE MODELS ARE IN
GENERAL AGREEMENT AND CONTINUE TO BUILD THE RIDGE OVER THE WESTERN
AND CENTRAL PORTION OF THE COUNTRY...WITH SEVERAL SHORT WAVES
DROPPING SOUTHEAST ACROSS SOUTHEASTERN GEORGIA AND NORTHEASTERN
FLORIDA OVER THE NEXT 36 TO 48 HOURS. THE AVN SEEMS TO OVER THE
SHORT WAVE WHICH MOVES THROUGH THE AREA THURSDAY AFTERNOON SO WILL
USE THE ETA AND NGM FOR THIS PACKAGE.

PRELIM
AMG 72/96/73/93 3533
SSI 75/94/75/89 2534
JAX 75/97/75/93 2433
GNV 72/97/73/93 1324 33

.JAX...
.GA...NONE
.FL...NONE3

SCOTT

In the hours before

Local storm report, Jul 11, 2:31 PM EDT, 4 hours 42 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSONVILLE, FL
231 PM EDT TUE JUL 11 2000

TIME(EDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0205 PM    WOODBINE                  GA   WIND DAMAGE
07/11/00   CAMDEN                         TREES DOWN ON HIGHWAY 110

MZ

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 11, 6:05 PM EDT	Severe Thunderstorm Warning	JAX	Suwannee	25 min
Jul 11, 7:05 PM EDT	Severe Thunderstorm Warning	JAX	Clay	40 min
Jul 11, 7:24 PM EDT	Severe Thunderstorm Warning	JAX	Baker, Columbia	36 min
Jul 11, 1:43 PM EDT	Severe Thunderstorm Warning	JAX	Camden	47 min
Jul 11, 5:54 PM EDT	Severe Thunderstorm Warning	JAX	Ware	36 min
Jul 11, 6:19 PM EDT	Severe Thunderstorm Warning	JAX	Clinch, Echols	41 min
Jul 11, 6:58 PM EDT	Severe Thunderstorm Warning	JAX	Charlton	47 min

Nearby

Severe Thunderstorm Warnings in Florida, 2000 Every severe thunderstorm warning in 2000

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.