Alert archive / Florida / Tornado Warnings in 1999
Tornado Warning 8, NWS Key West, FL
NWS Key West, FL issued this tornado warning at Oct 15, 1999, 5:57 AM EDT for Monroe County, Florida. It was in force for 63 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
- Oct 15, 1999, 5:57 AM EDT (09:57 UTC)
- Expired
- Oct 15, 1999, 7:00 AM EDT
- In force
- 63 min
- Issued by
- NWS Key West, FL
- Area
- Whole counties
County Monroe County, FL
The radar
The Miami radar (KAMX), 51 km from the middle of the area, began a volume at 10:00 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Oct 15, 6:15 AM EDT | Tornado F0 | (Nqx)Key West Nas, FL | The tornado moved through the south side of Boca Chica Key, just south of the NAS runway. ait moved through a non-residential area causing little damage. |
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 (KMFL), launched 00:00Z, 10.0 hours before the alert went out and 69 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
- 48 J/kg
- Mixed-layer CIN
- -47 J/kg
- Mixed-layer LCL
- 889 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 174 m²/s²
- 0-3 km storm-relative helicity
- 176 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 KEYW 151000 RRA TOREYW FLC087-151050- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE KEY WEST FL 557 AM EDT FRI OCT 15 1999 THE NATIONAL WEATHER SERVICE IN KEY WEST HAS ISSUED A * TORNADO WARNING FOR...THE LOWER KEYS IN MONROE COUNTY. * UNTIL 700 AM EDT * AT 555 AM EDT...DOPPLER RADAR DETECTED A THUNDERSTORM CAPABLE OF PRODUCING A TORNADO JUST TO THE SOUTH OF THE EXTREME LOWER KEYS. THIS STORM WAS MOVING NORTH AND NORTHWEST AT 20 TO 30 MPH. * SOME LOCATIONS NEAR THE PATH OF THIS TORNADO ARE...BOCA CHICA... STOCK ISLAND...AND KEY WEST. GO TO A SMALL INTERIOR ROOM ON THE LOWEST FLOOR! STAY AWAY FROM WINDOWS. IF YOU ARE IN A MULTIPLE STORY BUILDING...GO TO A SMALL IhNTERIOR ROOM AWAY FROM WINDOWS. TB
The office that day
Everything else NWS Key West, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 15, 6:28 AM EDT | Tornado Warning | KEY | Monroe | 42 min |
| Oct 15, 10:00 AM EDT | Flash Flood Warning | KEY | Monroe | 3 hr |
| Oct 15, 2:20 PM EDT | Flash Flood Warning | KEY | Monroe | 3 hr |
| Oct 15, 5:05 PM EDT | Flash Flood Warning | KEY | Monroe | 3 hr |
| Oct 15, 5:10 PM EDT | Tornado Warning | KEY | Monroe | 30 min |
Nearby
Tornado Warnings in Florida, 1999Every tornado warning in 1999Tornadoes in 1999
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.