Alert archive / Florida / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 147, NWS Tampa Bay, FL
NWS Tampa Bay, FL issued this severe thunderstorm warning at Sep 22, 2001, 5:59 PM EDT for Polk County, Florida. It was in force for 31 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Sep 22, 2001, 5:59 PM EDT (21:59 UTC)
- Expired
- Sep 22, 2001, 6:30 PM EDT
- In force
- 31 min
- Issued by
- NWS Tampa Bay, FL
- Area
- Whole counties
County Polk County, FL
The radar
The Tampa radar (KTBW), 74 km from the middle of the area, began a volume at 22:00 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.
The nearest sounding before it
Tampa Bay, FL (KTBW), launched 12:00Z, 10.0 hours before the alert went out and 74 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
- 1583 J/kg
- Mixed-layer CIN
- -40 J/kg
- Mixed-layer LCL
- 863 m above ground
- 0-6 km bulk shear
- 1 kt
- 0-1 km storm-relative helicity
- -26 m²/s²
- 0-3 km storm-relative helicity
- -17 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
947 WUUS52 KTBW 222200 SVRTBW FLC105-222230- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 559 PM EDT SAT SEP 22 2001 THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHEASTERN POLK COUNTY IN FLORIDA. * UNTIL 630 PM EDT. * AT 559 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE HAIL...OVER SOUTHEASTERN POLK COUNTY JUST SOUTHEAST OF FROSTPROOF NEAR READY LAKE. THE STORM WAS DRIFTING SOUTHWEST AT 5 MPH. * THE SEVERE THUNDERSTORM WILL AFFECT... INDIAN LAKE ESTATES. FROSTPROOF. SEVERE THUNDERSTORMS CONTAIN WIND GUSTS OF 60 MPH OR HIGHER...AND HAIL THE SIZE OF DIMES OR LARGER. MOVE TO A PLACE OF SAFETY. $$ 13 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 22, 1:50 PM EDT, 4 hours 9 minutes earlier.
Area forecast discussion, Sep 22, 1:50 PM EDT, 4 hours 9 minutes before
WEST CENTRAL AND SOUTHWEST FLORIDA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 150 PM EDT SAT SEP 22 2001 VERY WEAK FLOW ACROSS THE REGION WILL BECOME EAST TO SOUTHEAST ON SUNDAY AND TURN SOUTHWEST MONDAY AHEAD OF AN APPROACHING COLD FRONT. MODELS IN GOOD AGREEMENT STALLING THE FRONTAL BOUNDARY ACROSS NORTH CENTRAL FLORIDA TUESDAY. EASTERLY FLOW SUNDAY WILL CAUSE A SLIGHT INCREASE IN AREAL COVERAGE OF AFTERNOON/EVENING THUNDERSTORMS OVER THE COASTAL COUNTIES...AND SOUTHWEST FLOW MONDAY WILL FAVOR INCREASED POPS OVER THE INTERIOR. EXTENDED...DEEP TROPICAL MOISTURE WILL PERSIST OVER THE PENINSULA THE REMAINDER OF THE WEEK AS THE FRONTAL BOUNDARY REMAINS STATIONARY OVER NORTH CENTRAL FLORIDA. SCATTERED SHOWERS AND THUNDERSTORMS WILL DEVELOP EACH DAY ACROSS THE FA AS U/L IMPULSES RIDE ALONG THE FRONTAL BOUNDARY. MARINE...WINDS LESS THAN 15 KNOTS WITH SEAS LESS THAN 5 FEET THROUGH THE PERIOD. PRELIMINARY NUMBERS: TPA 074/089 075/088 2534 FMY 074/091 075/089 3534 .TBW...NONE. OGLESBY
The office that day
Everything else NWS Tampa Bay, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 22, 5:00 PM EDT | Severe Thunderstorm Warning | TBW | Sarasota | 45 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.