Alert archive / Florida / Severe Thunderstorm Watches in 1997

Severe Thunderstorm Watch 780

October 26, 199719 counties in Florida

The Storm Prediction Center issued this severe thunderstorm watch at Oct 26, 1997, 11:00 PM EST for 19 counties in Florida. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Oct 26, 1997, 11:00 PM EST (04:00 UTC)
Expired
Oct 27, 1997, 4:00 AM EST
In force
5 hr
Issued by
the Storm Prediction Center

Counties Alachua County, FL, Baker County, FL, Bradford County, FL, Citrus County, FL, Clay County, FL, Columbia County, FL, Duval County, FL, Flagler County, FL, Gilchrist County, FL, Hernando County, FL, Lake County, FL, Levy County, FL, Marion County, FL, Pasco County, FL, Putnam County, FL, Saint Johns County, FL, Sumter County, FL, Union County, FL, Volusia County, FL

The radar

The Jacksonville radar (KJAX), 103 km from the middle of the area, began a volume at 04:03 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 00:00Z, 4.0 hours before the alert went out and 104 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-pSkew-T log-p diagram, Jacksonville, FL at 00:00Z on 1997-10-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2292 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Jacksonville, FL at 00:00Z on 1997-10-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 191 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
2292 J/kg
Mixed-layer CIN
-9 J/kg
Mixed-layer LCL
792 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
191 m²/s²
0-3 km storm-relative helicity
211 m²/s²
Significant tornado parameter
2.6
Supercell composite
13.8

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.

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 27, 10:00 AM ESTTornado WatchSPCBrevard, Charlotte, DeSoto, Glades, Hardee, Highlands and 15 more6 hr

Nearby

Severe Thunderstorm Watches in Florida, 1997Every severe thunderstorm watch in 1997

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.