Alert archive / Florida / Coastal Flood Statements in 2021
Coastal Flood Statement 3, NWS Key West, FL
NWS Key West, FL issued this coastal flood statement at Oct 22, 2021, 3:58 PM EDT for Monroe County, Florida. It was in force for 30 hr.
The area
The counties it named.
The facts
- Issued
- Oct 22, 2021, 3:58 PM EDT (19:58 UTC)
- Expired
- Oct 23, 2021, 10:20 PM EDT
- In force
- 30 hr
- Issued by
- NWS Key West, FL
County Monroe County, FL
The radar
The Miami radar (KAMX), 51 km from the middle of the area, began a volume at 20:00 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
Miami, FL (KMFL), launched 12:00Z, 8.0 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
- 1611 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 779 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- -19 m²/s²
- 0-3 km storm-relative helicity
- 12 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
928 WHUS42 KKEY 221958 CFWKEY Coastal Hazard Message National Weather Service Key West FL 358 PM EDT Fri Oct 22 2021 FLZ077-230400- /O.NEW.KKEY.CF.S.0003.211022T2000Z-211023T0900Z/ Monroe Middle Keys- 358 PM EDT Fri Oct 22 2021 * WHAT...Minor saltwater flooding expected. * WHERE...Middle Florida Keys. * WHEN...Through late tonight. * IMPACTS...Minor saltwater flooding of low elevation streets and lots is likely. Some storm drains will overflow, and some seawalls and docks will be overtopped. Boaters can expect less clearance under fixed bridges. Motorists should remember that persistent puddles around the times of high tide are almost certain to contain a mix of saltwater. PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not drive through flooded roadways. && $$
2 follow-up statements
615 WHUS42 KKEY 230757 CFWKEY Coastal Hazard Message National Weather Service Key West FL 357 AM EDT Sat Oct 23 2021 FLZ077-231600- /O.EXT.KKEY.CF.S.0003.000000T0000Z-211024T0600Z/ Monroe Middle Keys- 357 AM EDT Sat Oct 23 2021 * WHAT...Minor saltwater flooding. * WHERE...Middle Florida Keys. * WHEN...Through late tonight. * IMPACTS...Minor saltwater flooding of low elevation streets and lots is likely, especially around the time of the higher high tide occurring after midnight. Some storm drains will overflow, and some seawalls and docks will be overtopped. Boaters can expect less clearance under fixed bridges. Motorists should remember that persistent puddles around the times of high tide are almost certain to contain a mix of saltwater. PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not drive through flooded roadways. && $$
861 WHUS42 KKEY 240220 CFWKEY Coastal Hazard Message National Weather Service Key West FL 1020 PM EDT Sat Oct 23 2021 FLZ077-240330- /O.CAN.KKEY.CF.S.0003.000000T0000Z-211024T0600Z/ Monroe Middle Keys- 1020 PM EDT Sat Oct 23 2021 The Coastal Flood Statement is cancelled for the Middle Keys. $$ CLR
The office that day
Everything else NWS Key West, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 22, 7:34 PM EDT | Special Marine Warning | KEY | 56 min |
Nearby
Coastal Flood Statements in Florida, 2021Every coastal flood statement in 2021
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.