Alert archive / Florida / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 2, NWS Key West, FL
NWS Key West, FL issued this severe thunderstorm warning at Aug 24, 2020, 3:18 PM EDT for Monroe County, Florida. It was in force for 27 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
- Aug 24, 2020, 3:18 PM EDT (19:18 UTC)
- Expired
- Aug 24, 2020, 3:45 PM EDT
- In force
- 27 min
- Issued by
- NWS Key West, FL
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Monroe County, FL
The radar
The Key West radar (KBYX), 23 km from the middle of the area, began a volume at 19:16 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
Key West, FL (KEYW), launched 12:00Z, 7.3 hours before the alert went out and 26 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
- 1901 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 830 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- -64 m²/s²
- 0-3 km storm-relative helicity
- 3 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
713
WUUS52 KKEY 241918
SVRKEY
FLC087-241945-
/O.NEW.KKEY.SV.W.0002.200824T1918Z-200824T1945Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Key West FL
318 PM EDT Mon Aug 24 2020
The National Weather Service in Key West has issued a
* Severe Thunderstorm Warning for...
Lower Keys in Monroe County in Florida...
Middle Keys in Monroe County in Florida...
* Until 345 PM EDT..
* At 317 PM EDT, severe thunderstorms were located along a line
extending from Sunset Key to near Little Palm Island Resort to 17
miles southeast of Boot Key, moving north at 40 mph. A wind gust
of 70 mph was observed in Key West.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations in the warning include...
Key West, Marathon, Bahia Honda Channel Bridge, Seven Mile Bridge,
East End Of Seven Mile Bridge, Big Coppitt Key, Boca Chica Channel
Bridge, Niles Channel Bridge, Spanish Harbor Channel Bridge and
Boca Chica.
This includes US 1 between mile markers 0 and 58.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 2452 8191 2462 8195 2463 8191 2458 8184
2467 8179 2473 8168 2470 8162 2478 8159
2483 8148 2481 8128 2469 8128 2469 8120
2473 8116 2480 8096 2473 8095 2466 8106
2469 8118 2459 8138 2461 8143 2452 8176
TIME...MOT...LOC 1917Z 164DEG 35KT 2454 8184 2458 8143 2447 8097
HAIL...<.75IN
WIND...60MPH
$$
Haner1 follow-up statement
979
WWUS52 KKEY 241949
SVSKEY
Severe Weather Statement
National Weather Service Key West FL
349 PM EDT Mon Aug 24 2020
FLC087-241959-
/O.EXP.KKEY.SV.W.0002.000000T0000Z-200824T1945Z/
Lower Keys in Monroe FL-Middle Keys in Monroe FL-
349 PM EDT Mon Aug 24 2020
...THE SEVERE THUNDERSTORM WARNING FOR LOWER KEYS IN MONROE AND
MIDDLE KEYS IN MONROE COUNTIES HAS EXPIRED...
The storms which prompted the warning have moved out of the area.
Therefore, the warning has been allowed to expire.
LAT...LON 2452 8191 2462 8195 2463 8191 2458 8184
2467 8179 2473 8168 2470 8162 2478 8159
2483 8148 2481 8128 2469 8128 2469 8120
2473 8116 2480 8096 2473 8095 2466 8106
2469 8118 2459 8138 2461 8143 2452 8176
TIME...MOT...LOC 1949Z 164DEG 35KT 2483 8193 2487 8152 2476 8106
$$
HanerThe office that day
Everything else NWS Key West, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 23, 11:31 PM EDT | Gale Warning | KEY | 18 hr | |
| Aug 23, 11:31 PM EDT | Tropical Storm Warning | KEY | Monroe | 35 hr |
| Aug 24, 5:24 AM EDT | Wind Advisory | KEY | Monroe | 12 hr |
| Aug 24, 3:23 PM EDT | Special Marine Warning | KEY | 67 min | |
| Aug 24, 4:10 PM EDT | Coastal Flood Advisory | KEY | Monroe | 7 hr |
| Aug 24, 4:29 PM EDT | Special Marine Warning | KEY | 45 min | |
| Aug 24, 5:47 PM EDT | Small Craft Advisory | KEY | 23 hr |
Nearby
Severe Thunderstorm Warnings in Florida, 2020Every severe thunderstorm warning in 2020
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.