Alert archive / Florida / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 77, NWS Tampa Bay, FL
NWS Tampa Bay, FL issued this severe thunderstorm warning at Sep 6, 2000, 3:52 PM EDT for Sumter County, Florida. It was in force for 23 min. 1 report 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
- Sep 6, 2000, 3:52 PM EDT (19:52 UTC)
- Expired
- Sep 6, 2000, 4:15 PM EDT
- In force
- 23 min
- Issued by
- NWS Tampa Bay, FL
- Area
- Whole counties
County Sumter County, FL
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 6, 4:13 PM EDT | Thunderstorm Wind | Lake Panasoffkee, FL | The Sumter County Fire Rescue reported that 50 to 60 mph downburst winds downed a few trees and several large branches in the vicinity of Lake Panasoffkee in northern Sumter County. |
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, 7.9 hours before the alert went out and 116 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
- 1469 J/kg
- Mixed-layer CIN
- -24 J/kg
- Mixed-layer LCL
- 738 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 80 m²/s²
- 0-3 km storm-relative helicity
- 85 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 061953 SVRTBW FLC119-062015- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 352 PM EDT WED SEP 6 2000 THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL SUMTER COUNTY. * UNTIL 415 PM EDT. * AT 352 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE HAIL...OVER BUSHNELL...MOVING NORTH AT 5 MPH. * THE SEVERE THUNDERSTORM WILL AFFECT... LAKE PANASOFFKEE BY 415 PM EDT. FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY. DO NOT USE ELECTRICAL APPLIANCES OR TELEPHONES. $$ LAT...LON 2852 8224 2852 8203 2876 8201 2876 8227 57 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 Sep 6, 2:28 PM EDT, 1 hour 24 minutes earlier.
Area forecast discussion, Sep 6, 2:28 PM EDT, 1 hour 24 minutes before
WEST CENTRAL AND SOUTHWEST FLORIDA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 228 PM EDT WED SEP 6 2000 CURRENTLY...AMPLE MOISTURE AND INSTABILITY ALONG WITH A WEAK UPPER VORT MAX WORKING ITS WAY NORTH FROM THE SOUTHERN FA IS HELPING TO FIRE OFF A GOOD DEAL OF SHOWERS AND STORMS EARLY THIS AFTERNOON. AS THE AFTERNOON CONTINUES EXPECT TO SEE ADDITIONAL STORMS FIRE OFF ON OUTFLOW BOUNDARIES WITH ALL OF THE CONVECTION MOVING NORTH IN THE DEEP SOUTHERLY STEERING FLOW THROUGH THE EVENING HOURS...SO WILL ADVERTISE HIGH SCATTERED EVENING POPS CENTRAL AND SOUTHERN ZONES. OVER THE NORTH IS ANOTHER PROBLEM. SOUTHWARD SAGGING FRONTAL BOUNDARY ALONG WITH DIVERGENT FLOW ALOFT LIKELY TO KEEP CHANCES FOR POPS GOING OVERNIGHT...SO WILL KEEP LEVY COUNTY SEPARATE FROM THE OTHER ZONES AND ADVERTISE SCT POPS FOR THE OVERNIGHT PERIOD. FORECAST...WELL MODELS APPEAR TO BE IN GOOD AGREEMENT WITH OVERALL SYNOPTIC SCALE FEATURES...HOWEVER WILL LEAN A BIT CLOSER TO THE AVN SOLUTION AT LEAST IN THE SHORT TERM AS IT INITIALIZED THE UPPER LOW OVER THE CENTRAL GULF THE BEST. HOWEVER BEYOND 48H...AM A LITTLE SUSPICIOUS WITH THE AVNS SOLUTION OF A SURFACE LOW DEVELOPING ALONG THE STALLED OUT FRONTAL BOUNDARY OVER THE ATLANTIC OFF THE SC/GA COASTS...WITH THE LOW MOVING SOUTHWEST TOWARD THE NORTHERN BAHAMAS BY EARLY ON SATURDAY MORNING. IN THE INTERIM UPPER LOW OVER THE CENTRAL GULF IS PROGD TO RETROGRADE SOUTHWEST TOWARDS MEXICO AS UPPER AND SURFACE RIDGING BEGINS TO BUILD IN OVER THE FORECAST AREA FROM THE EAST. MODEL SOUNDING DATA SHOWS LITTLE CHANGE IN MOISTURE LEVELS DURING THE NEXT 24-48 HOURS WITH PWS REMAINING CLOSE TO 2...SO PLAN TO KEEP POPS IN THE LIKELY CATEGORY ON THURSDAY...BUT AS UPPER RIDGE BUILDS IN INCREASING SUBSIDENCE AND SLIGHTLY DRIER MID LEVEL AIR WILL LIKELY HELP TO DECREASE POP CHANCES ON FRIDAY AND ZONES WILL REFLECT THIS TREND. AS FOR TEMPS FWC MAXS LOOK A BIT HIGH FOR THE NEXT FEW DAYS ESPECIALLY NORTHERN ZONES AND WILL LEAN TOWARD COOLER LOOKING FAN NUMBERS TO ACCOUNT FOR THE EXPECTED CLOUDS AND PRECIP. EXTENDED...(SAT-MON)...IF 72 HOUR SOLUTION OF THE 12Z AVN PANS OUT LOWER PWS AND SUBSIDENCE ON WESTERN SIDE OF DEVELOPING LOW OVER THE NORTHERN BAHAMAS WOULD SUGGEST LOWERING POPS TO BELOW CLIMO-LEVELS ACROSS THE BOARD ON SATURDAY...THEN INCREASING POP CHANCES FOR SUNDAY AND MONDAY IF 06/00UTC MRF RUN VERIFIES. DUE TO THE UNCERTAINTY AT THIS TIME PLAN TO KEEP POPS IN THE LOW SCATTERED RANGE THROUGHOUT THE PERIOD. MARINE...AS WEAK SURFACE LOW OVER THE GULF CONTINUES TO RETROGRADE SOUTHWEST GRADIENT WILL RELAX A BIT NEXT DAY OR SO WITH FLOW SLOWLY BACKING TO THE EAST BY FRIDAY AS RIDGE BUILDS IN. WIND AND SEA STATES SHOULD REMAIN BELOW ADVISORY CRITERIA WITH NO HIGHLIGHTS NEEDED. PRELIMINARY NUMBERS TPA TB 076/089 076/090 075 5644 FMY TB 076/090 077/091 075 5644 .TBW...NONE. MCMICHAEL
In the hours before
Special weather statement, Sep 6, 11:18 AM EDT, 4 hours 34 minutes before
FLZ039-042-043-048>052-055>057-060>062-065-062330- WEST CENTRAL AND SOUTHWEST FLORIDA HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 1118 AM EDT WED SEP 6 2000 ...WIDESPREAD THUNDERSTORMS THIS AFTERNOON SOME WITH LOCALLY HEAVY RAINS... DEEP LAYERED MOISTURE...AFTERNOON HEATING AND SUFFICIENT INSTABILITY ALONG WITH A WEAK UPPER LEVEL DISTURBANCE MOVING ACROSS THE REGION WILL RESULT IN WIDESPREAD THUNDERSTORMS OVER WEST CENTRAL AND SOUTHWEST FLORIDA THIS AFTERNOON. THUNDERSTORMS WILL BEGIN TO DEVELOP EARLY THIS AFTERNOON...AND SHOULD COVER MOST OF THE AREA BETWEEN 3 AND 5 PM. THE THUNDERSTORMS MAY QUIET DOWN A BIT TOWARDS EVENING OVER INTERIOR COUNTIES...BUT MAY CONTINUE PAST SUNSET ALONG COASTAL COUNTIES...AND PERHAPS LINGER WELL AFTER MIDNIGHT OVER THE ADJACENT COASTAL WATERS. AT THE PRESENT TIME THE PRIMARY HAZARDS FROM THE STORMS THIS AFTERNOON WILL BE FREQUENT LIGHTNING AND TORRENTIAL RAINS. SOME STORMS WILL PRODUCE RAINFALL RATES OF 2 INCHES PER HOUR...AND STORM TOTALS MAY EXCEED 4 INCHES IN SOME LOCATIONS...WHICH MAY CAUSE MINOR FLOODING OF LOW LYING AND POOR DRAINAGE AREAS. EVEN THOUGH STORMS ARE NOT EXPECTED TO BECOME SEVERE...SOME OF THE STRONGER STORMS MAY PRODUCE WIND GUSTS IN EXCESS OF 40 MPH...ALONG WITH SOME POSSIBLE WATERSPOUTS OVER THE ADJACENT GULF COASTAL WATERS. ALL RESIDENTS AND MARINERS ARE URGED TO KEEP AN EYE TO THE SKY THIS AFTERNOON...AND BE READY TO SEEK SAFETY BEFORE THREATENING WEATHER ARRIVES. STAY TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL MEDIA OUTLETS FOR FURTHER STATEMENTS...AND POSSIBLE WARNINGS OR ADVISORIES DURING THE AFTERNOON AND EVENING HOURS. MCMICHAEL
Nearby
Severe Thunderstorm Warnings in Florida, 2000Every severe thunderstorm warning in 2000
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.