Alert archive / Florida / Extreme Wind Warnings in 2017
Extreme Wind Warning 2, NWS Key West, FL
NWS Key West, FL issued this extreme wind warning at Sep 10, 2017, 9:21 AM EDT for Monroe County, Florida. It was in force for 114 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Sep 10, 2017, 9:21 AM EDT (13:21 UTC)
- Expired
- Sep 10, 2017, 11:15 AM EDT
- In force
- 114 min
- Issued by
- NWS Key West, FL
- Area
- Storm-based polygon
County Monroe County, FL
The radar
The Key West radar (KBYX), 23 km from the middle of the area, began a volume at 13:22 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, 1.4 hours before the alert went out and 349 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
- 103 J/kg
- Mixed-layer CIN
- -80 J/kg
- Mixed-layer LCL
- 872 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 8 m²/s²
- 0-3 km storm-relative helicity
- 186 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
616
WFUS52 KKEY 101321
EWWKEY
FLC087-101515-
/O.NEW.KKEY.EW.W.0002.170910T1321Z-170910T1515Z/
BULLETIN - EAS ACTIVATION REQUESTED
Extreme Wind Warning
National Weather Service Key West FL
921 AM EDT SUN SEP 10 2017
The National Weather Service in Key West has issued a
* Extreme Wind Warning for...
Lower Keys in Monroe County in Florida...
* Until 1115 AM EDT
* At 915 AM EDT, National Weather Service Doppler radar indicated
extreme winds, associated with the southern eyewall of Hurricane
Irma, were pulling northward across the Lower Keys. Winds will be
blowing from the opposite direction from just a short while ago.
Treat these extreme winds as if a tornado was approaching. Stay in
your protected shelter, covered with mattresses, blankets,
pillows, helmets, etc.
* Locations impacted include...
Key West, Bahia Honda Channel Bridge, Big Coppitt Key, Boca Chica
Channel Bridge, Niles Channel Bridge, Spanish Harbor Channel
Bridge, Boca Chica, West End Of Seven Mile Bridge, Saddlebunch Keys
and Sunset Key.
This is an extremely dangerous and life-threatening situation!
This includes US 1 between mile markers 0 and 40.
A tornado watch remains in effect until noon EDT for Florida.
LAT...LON 2453 8184 2464 8181 2472 8167 2470 8162
2476 8160 2478 8154 2481 8150 2479 8135
2480 8129 2474 8126 2470 8127 2471 8124
2468 8121 2461 8135 2460 8141 2461 8143
2460 8144 2459 8154 2455 8165
TIME...MOT...LOC 1316Z 180DEG 0KT 2467 8157
$$
041 follow-up statement
763
WWUS52 KKEY 101408
SVSKEY
Severe Weather Statement
National Weather Service Key West FL
1008 AM EDT SUN SEP 10 2017
FLC087-101414-
/O.CAN.KKEY.EW.W.0002.000000T0000Z-170910T1515Z/
Lower Keys in Monroe FL-
1008 AM EDT SUN SEP 10 2017
...THE EXTREME WIND WARNING FOR LOWER KEYS IN MONROE COUNTY IS
CANCELLED...
The southern eywall of Hurricane Irma has pushed north of the Lower
Keys.
A tornado watch remains in effect until noon EDT for the Florida
Keys.
LAT...LON 2453 8184 2464 8181 2472 8167 2470 8162
2476 8160 2478 8154 2481 8150 2479 8135
2480 8129 2474 8126 2470 8127 2471 8124
2468 8121 2461 8135 2460 8141 2461 8143
2460 8144 2459 8154 2455 8165
TIME...MOT...LOC 1403Z 180DEG 0KT 2467 8157
$$
04The office that day
Everything else NWS Key West, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 10, 6:20 AM EDT | Extreme Wind Warning | KEY | Monroe | 3 hr |
| Sep 10, 11:15 AM EDT | Special Weather Statement | KEY | 90 min | |
| Sep 10, 4:06 PM EDT | Special Weather Statement | KEY | 84 min | |
| Sep 10, 6:21 PM EDT | Special Weather Statement | KEY | Miami-Dade | 54 min |
Nearby
Extreme Wind Warnings in Florida, 2017Every extreme wind warning in 2017
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.