Alert archive / Florida / Tornado Watches in 2002
Tornado Watch 1
The Storm Prediction Center issued this tornado watch at Jan 2, 2002, 2:00 PM EST for Miami-Dade County, Monroe County, Florida. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Jan 2, 2002, 2:00 PM EST (19:00 UTC)
- Expired
- Jan 2, 2002, 7:00 PM EST
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
Counties Miami-Dade County, FL, Monroe County, FL
Warnings issued inside it
1 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 2, 2:31 PM EST | Tornado Warning | MFL | Monroe | 29 min |
The nearest sounding before it
Key West, FL (KEYW), launched 12:00Z, 7.0 hours before the alert went out and 83 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
- 312 J/kg
- Mixed-layer CIN
- -29 J/kg
- Mixed-layer LCL
- 785 m above ground
- 0-6 km bulk shear
- 68 kt
- 0-1 km storm-relative helicity
- 158 m²/s²
- 0-3 km storm-relative helicity
- 333 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 WWUS20 KWNS 021845 SEL1 SPC WW 021840 FLZ000-CWZ000-030000- URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 1 STORM PREDICTION CENTER NORMAN OK 140 PM EST WED JAN 2 2002 THE STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF EXTREME SOUTH FLORIDA AND THE KEYS AND ADJACENT COASTAL WATERS EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 200 PM UNTIL 700 PM EST. TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE TORNADO WATCH AREA IS ALONG AND 35 STATUTE MILES EAST AND WEST OF A LINE FROM 20 MILES EAST SOUTHEAST OF KEY WEST FLORIDA TO 10 MILES NORTH NORTHEAST OF MIAMI FLORIDA. REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND 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. DISCUSSION...BROKEN LINE OF THUNDERSTORMS CONTINUES TO APPROACH FAR SOUTH FL. SEVERAL SMALL SUPERCELLS AND/OR BOW ECHOES ARE EMBEDDED WITHIN THE LINE. STORMS ARE EXPECTED TO TRACK EASTWARD ACROSS REGION FOR NEXT SEVERAL HOURS...WITH THE THREAT OF ISOLATED DAMAGING WINDS OR BRIEF TORNADOES. DESPITE RATHER WEAK INSTABILITY...BACKED LOW LEVEL WINDS AND NEARLY SATURATED SURFACE CONDITIONS WILL AID IN TORNADO THREAT. AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 1 INCH...EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 26035. ...HART 255,0793 242,0805 242,0820 255,0804 WWUS20 KWNS 021845 SEL1 SPC WW 021840 FLZ000-CWZ000-030000- URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 1 STORM PREDICTION CENTER NORMAN OK 140 PM EST WED JAN 2 2002 THE STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF EXTREME SOUTH FLORIDA AND THE KEYS AND ADJACENT COASTAL WATERS EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 200 PM UNTIL 700 PM EST. TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE TORNADO WATCH AREA IS ALONG AND 35 STATUTE MILES EAST AND WEST OF A LINE FROM 20 MILES EAST SOUTHEAST OF KEY WEST FLORIDA TO 10 MILES NORTH NORTHEAST OF MIAMI FLORIDA. REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND 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. DISCUSSION...BROKEN LINE OF THUNDERSTORMS CONTINUES TO APPROACH FAR SOUTH FL. SEVERAL SMALL SUPERCELLS AND/OR BOW ECHOES ARE EMBEDDED WITHIN THE LINE. STORMS ARE EXPECTED TO TRACK EASTWARD ACROSS REGION FOR NEXT SEVERAL HOURS...WITH THE THREAT OF ISOLATED DAMAGING WINDS OR BRIEF TORNADOES. DESPITE RATHER WEAK INSTABILITY...BACKED LOW LEVEL WINDS AND NEARLY SATURATED SURFACE CONDITIONS WILL AID IN TORNADO THREAT. AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 1 INCH...EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 26035. ...HART 255,0793 242,0805 242,0820 255,0804
Nearby
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.