Alert archive / Florida / Severe Thunderstorm Watches in 2001
Severe Thunderstorm Watch 4
The Storm Prediction Center issued this severe thunderstorm watch at Jan 19, 2001, 11:00 AM CST for 14 counties in Florida. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Jan 19, 2001, 11:00 AM CST (17:00 UTC)
- Expired
- Jan 19, 2001, 3:00 PM CST
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
Counties Bay County, FL, Calhoun County, FL, Franklin County, FL, Gadsden County, FL, Gulf County, FL, Holmes County, FL, Jackson County, FL, Jefferson County, FL, Leon County, FL, Liberty County, FL, Madison County, FL, Taylor County, FL, Wakulla County, FL, Washington County, FL
The radar
The Tallahassee radar (KTLH), 51 km from the middle of the area, began a volume at 16:59 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
2 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 19, 11:15 AM CST | Severe Thunderstorm Warning | TAE | Holmes | 30 min |
| Jan 19, 11:40 AM CST | Severe Thunderstorm Warning | TAE | Bay, Washington | 35 min |
The nearest sounding before it
Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 5.0 hours before the alert went out and 54 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
- 3 J/kg
- Mixed-layer CIN
- -90 J/kg
- Mixed-layer LCL
- 807 m above ground
- 0-6 km bulk shear
- 69 kt
- 0-1 km storm-relative helicity
- 308 m²/s²
- 0-3 km storm-relative helicity
- 354 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
394 WWUS9 KMKC 191649 SEL4 SEL4 MKC WW 191644 FLZ000-CWZ000-192100- URGENT - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WATCH NUMBER 4 STORM PREDICTION CENTER NORMAN OK 1144 AM EST FRI JAN 19 2001 THE STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR PORTIONS OF FLORIDA PANHANDLE COASTAL WATERS EFFECTIVE THIS FRIDAY AFTERNOON FROM NOON EST UNTIL 400 PM EST. HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 40 STATUTE MILES NORTH AND SOUTH OF A LINE FROM 20 MILES NORTHWEST OF PANAMA CITY FLORIDA TO 70 MILES EAST SOUTHEAST OF TALAHASSEE FLORIDA. REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. OTHER WATCH INFORMATION... CONTINUE...WW 2...WW 3... DISCUSSION...SQUALL LINE EXPECTED TO CONTINUE RAPIDLY EWD SUPPORTED BY STRONG WIND FIELDS. PRIMARY THREAT WILL BE DAMAGING WINDS WITH MARGINAL INSTABILITY AVAILABLE. AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 1 INCH EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM MOTION VECTOR 24040. ...HALES 310,0855 303,0831 292,0831 295,0855
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 19, 6:00 AM CST | Severe Thunderstorm Watch | SPC | Escambia, Holmes, Okaloosa, Santa Rosa, Walton, Washington | 5 hr |
Nearby
Severe Thunderstorm Watches in Florida, 2001Every severe thunderstorm watch 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.