Alert archive / Florida / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 68, NWS Tampa Bay, FL
NWS Tampa Bay, FL issued this severe thunderstorm warning at Jun 18, 2001, 4:25 PM EDT for Lee County, Florida. It was in force for 35 min. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jun 18, 2001, 4:25 PM EDT (20:25 UTC)
- Expired
- Jun 18, 2001, 5:00 PM EDT
- In force
- 35 min
- Issued by
- NWS Tampa Bay, FL
- Area
- Whole counties
County Lee County, FL
The radar
The Tampa radar (KTBW), 132 km from the middle of the area, began a volume at 20:25 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 18, 4:50 PM EDT | Thunderstorm Wind 52 E | Estero, FL | A Skywarn Spotter reported that thunderstorm winds downed several tree tops and large branches near the intersection of U.S. Highway 41 and Corkscrew Road. |
| Jun 18, 4:55 PM EDT | Hail 1.75 | Estero, FL | A Skywarn Spotter reported that golf ball sized hail broke a few windshields and damaged the paint of a few vehicles near the intersection of U.S. Highway 41 and Corkscrew Road one mile south of Estero. |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Tampa Bay, FL (KTBW), launched 12:00Z, 8.4 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.
- Mixed-layer CAPE
- 227 J/kg
- Mixed-layer CIN
- -142 J/kg
- Mixed-layer LCL
- 1193 m above ground
- 0-6 km bulk shear
- 5 kt
- 0-1 km storm-relative helicity
- -4 m²/s²
- 0-3 km storm-relative helicity
- 11 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS52 KTBW 182026 SVRTBW FLC071-182100- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 425 PM EDT MON JUN 18 2001 THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHERN LEE COUNTY IN FLORIDA. * UNTIL 500 PM EDT. * AT 425 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM WITH DAMAGING WINDS...11 MILES EAST OF BONITA SPRINGS...MOVING NORTHWEST AT 20 MPH. * THE SEVERE THUNDERSTORM WILL AFFECT... BONITA SPRINGS. ESTERO. WIND GUSTS TO 60 MPH COULD CAUSE SOME STRUCTURAL DAMAGE...MAINLY TO TREES AND POWER LINES. POORLY ANCHORED ROOFS..-.MOBILE HOMES...AND SHEDS ARE ALSO AT RISK. FREQUENT LIGHTNING AND HAIL THE SIZE OF DIMES OR LARGER ARE ALSO POSSIBLE WITH THIS STORM. $$ LAT...LON 2618 8162 2632 8149 2659 8180 2642 8197 NNNN
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 Tampa Bay, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 18, 2:17 PM EDT, 2 hours 8 minutes earlier.
Area forecast discussion, Jun 18, 2:17 PM EDT, 2 hours 8 minutes before
WEST CENTRAL AND SOUTHWEST FLORIDA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 217 PM EDT MON JUN 18 2001 FORECAST PACKAGE RATHER CUT AND DRIED THROUGH THE SHORT TERM. ABUNDANT MOISTURE...LEFTOVER WEAK UPPER DISTURBANCES...AND A GENERAL WEAK SE FLOW BELOW H50 MEANS MORE ABUNDANT RAINFALL...WITH TIMING MAINLY LATE AFTN AND EVENING. CURR FCST WORDING ONLY NEEDS A FEW TWEAKS. MODELS ARE IN VERY GOOD AGREEMENT...WITH EACH CONTINUING A BROAD H50 SHEAR AXIS ACROSS N FL. OTHER FIELDS ARE NEARLY IDENTICAL... AVN/ETA PERHAPS A BIT MOISTER. SHORT TERM: STILL LIKE THE MESO-ETA DEPICTION OF PREDOMINANTLY LATE AFTN/EVE (TIL MIDNIGHT) THUNDERSTORMS OVER THE COASTAL COS...A SHADE EARLIER FOR THE INTERIOR COS. ISOLD ACTIVITY MAY DEVELOP ALONG THE WCSB LATE MORNING/EARLY AFTN...BUT WILL LEAVE OUT IN LIEU OF THE MORE WIDESPREAD ACTIVITY LATER ON. TEMPS A BIT COOLER INLAND GIVEN PREDOMINANT E FLOW...AND RAIN COOLED AIR COMBINED WITH LIGHT FLOW WILL KEEP MIN TEMPS NEAR OR JUST ABOVE 70. EXTENDED: UPPER TROUGH STILL ON TRACK TO DIG INTO THE ERN U.S. NEW MRF SHOWS THIS SYSTEM EVENTUALLY CUTTING OFF OVER THE TN VALLEY THEN RETROGRADING W EARLY NEXT WEEK. SUCH SYSTEMS ARE NOT UNCOMMON IN LATE JUNE...AND TEND TO KEEP THE RAIN MACHINE GOING OVER THE E U.S. FOR US...THE SOLN IS A BIT MURKY REGARDING TIMING. W ATLC HIGH PRES WILL HANG TOUGH...LEAVING A GENERAL LIGHT SE-SW FLOW. FOR NOW...WILL BROAD BRUSH FRI-MON WITH NO PCPN TIMING AND TEMPS NEAR CLIMO. MARINE: STILL QUIET THROUGH THE PERIOD...WITH AVG WINDS NO HIGHER THAN 10 KT EXPECTED. FIRE WX: DITTO...WITH HOPEFULLY FEWER BRUSH FIRES AND MORE WIDESPREAD RAIN SHOULD BEGIN TO DOUSE THEM. PRELIM NUMBERS: TPA TT 072/92/72/92 4454 FMY TT 071/92/71/92 5454 .TBW...NONE. 88/GOLDSMITH
The office that day
Everything else NWS Tampa Bay, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 17, 9:13 PM EDT | Severe Thunderstorm Warning | TBW | Hardee | 32 min |
| Jun 18, 3:20 PM EDT | Severe Thunderstorm Warning | TBW | Hillsborough | 40 min |
| Jun 18, 4:36 PM EDT | Severe Thunderstorm Warning | TBW | Pasco | 39 min |
| Jun 18, 5:02 PM EDT | Severe Thunderstorm Warning | TBW | Lee | 28 min |
| Jun 18, 5:15 PM EDT | Severe Thunderstorm Warning | TBW | Pasco | 45 min |
| Jun 18, 5:29 PM EDT | Severe Thunderstorm Warning | TBW | Charlotte, Lee | 31 min |
| Jun 18, 6:11 PM EDT | Severe Thunderstorm Warning | TBW | Hardee | 34 min |
| Jun 18, 6:35 PM EDT | Severe Thunderstorm Warning | TBW | Polk | 40 min |
| Jun 18, 7:12 PM EDT | Severe Thunderstorm Warning | TBW | Polk | 33 min |
Nearby
Severe Thunderstorm Warnings in Florida, 2001Every severe thunderstorm warning 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.