Alert archive / Florida / Severe Thunderstorm Watches in 1997

Severe Thunderstorm Watch 35

January 25, 199713 counties in Florida

The Storm Prediction Center issued this severe thunderstorm watch at Jan 25, 1997, 11:45 AM EST for 13 counties in Florida. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jan 25, 1997, 11:45 AM EST (16:45 UTC)
Expired
Jan 25, 1997, 5:00 PM EST
In force
5 hr
Issued by
the Storm Prediction Center

Counties Brevard County, FL, Citrus County, FL, Hernando County, FL, Hillsborough County, FL, Lake County, FL, Marion County, FL, Orange County, FL, Osceola County, FL, Pasco County, FL, Polk County, FL, Seminole County, FL, Sumter County, FL, Volusia County, FL

The radar

The Melbourne radar (KMLB), 130 km from the middle of the area, began a volume at 16:49 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.

Warnings issued inside it

1 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Jan 25, 12:35 PM ESTSevere Thunderstorm WarningTBWPasco, Pinellas50 min

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 12:00Z, 4.8 hours before the alert went out and 132 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, Tampa Bay, FL at 12:00Z on 1997-01-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1621 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, Tampa Bay, FL at 12:00Z on 1997-01-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 46 square meters per square second.1939587897Sfc1 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
1621 J/kg
Mixed-layer CIN
-19 J/kg
Mixed-layer LCL
627 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
46 m²/s²
0-3 km storm-relative helicity
59 m²/s²
Significant tornado parameter
0.3
Supercell composite
2.7

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
Jan 24, 9:15 PM ESTTornado WatchSPCBay, Calhoun, Franklin, Gadsden, Gulf, Holmes and 7 more6 hr
Jan 25, 12:00 AM ESTSevere Thunderstorm WatchSPCEscambia, Okaloosa, Santa Rosa6 hr
Jan 25, 1:30 PM ESTSevere Thunderstorm WatchSPCCharlotte, DeSoto, Glades, Hardee, Hendry, Highlands and 8 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.