Alert archive / Florida / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 78, NWS Miami, FL
NWS Miami, FL issued this severe thunderstorm warning at Jul 3, 1997, 4:00 PM EDT for Collier County, Florida. It was in force for 90 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
- Jul 3, 1997, 4:00 PM EDT (20:00 UTC)
- Expired
- Jul 3, 1997, 5:30 PM EDT
- In force
- 90 min
- Issued by
- NWS Miami, FL
- Area
- Whole counties
County Collier County, FL
The radar
The Miami radar (KAMX), 111 km from the middle of the area, began a volume at 19:59 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 3, 5:25 PM EDT | Hail 1.75 | North Naples, FL | golf ball size hail observed by corkscrew fire dept near everglades and immokalee rd. |
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
Miami, FL (KMIA), launched 12:00Z, 8.0 hours before the alert went out and 113 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
- 2389 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 650 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 4 m²/s²
- 0-3 km storm-relative helicity
- 1 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMIA 032002 RRA SVRMIA FLC021-032100- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MIAMI FL 400 PM EDT THU JUL 3 1997 THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 530 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATION...... IN SOUTHWEST FLORIDA ...COLLIER COUNTY NATIONAL WEATHER SERVICE DOPPLER RADAR AT 4 PM INDICATED A THUNDERSTORM WHICH WILL LIKELY BECOME SEVERE AS IT MOVES SOUTHWARD OVER THE MIDDLE SECTIONS OF COLLIER COUNTY. THIS STORM WILL BE PROGRESSING SOUTH ALONG OR NEAR TO HIGHWAY 29 FROM SOUTH OF IMMOKALEE TOWARDS INTERSTATE HIGHWAY 75. DAMAGING WIND IN EXCESS OF 55 MPH...LARGE HAIL...bVERY HEAVY RAIN... AND DEADLY LIGHTNING ARE ALL POSSIBLE IN A SEVERE THUNDERSTORM. SEEK SHELTER IN A STRONG BUILDING. STAY AWAY FROM WINDOWS. DO NOT USE TELEPHONES OR ELECTRICAL APPLIANCES.
The office that day
Everything else NWS Miami, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 3, 1:52 PM EDT | Severe Thunderstorm Warning | MFL | Miami-Dade | 68 min |
| Jul 3, 5:10 PM EDT | Tornado Warning | MFL | Collier | 50 min |
| Jul 3, 5:43 PM EDT | Severe Thunderstorm Warning | MFL | Collier | 77 min |
| Jul 3, 6:53 PM EDT | Severe Thunderstorm Warning | MFL | Miami-Dade | 67 min |
| Jul 3, 7:30 PM EDT | Severe Thunderstorm Warning | MFL | Miami-Dade | 60 min |
| Jul 3, 7:48 PM EDT | Severe Thunderstorm Warning | MFL | Hendry | 72 min |
Nearby
Severe Thunderstorm Warnings in Florida, 1997Every severe thunderstorm warning in 1997
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.