Alert archive / Florida / Coastal Flood Statements in 2021
Coastal Flood Statement 12, NWS Key West, FL
NWS Key West, FL issued this coastal flood statement at Dec 6, 2021, 4:34 AM EST for Monroe County, Florida. It took effect at Dec 6, 2021, 8:00 PM EST. It was in force for 9 hr.
The area
The counties it named.
The facts
- Issued
- Dec 6, 2021, 4:34 AM EST (09:34 UTC)
- In effect from
- Dec 6, 2021, 8:00 PM EST
- Expired
- Dec 7, 2021, 4:34 AM EST
- In force
- 9 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 09:35 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 00:00Z, 9.6 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
- 354 J/kg
- Mixed-layer CIN
- -157 J/kg
- Mixed-layer LCL
- 976 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 10 m²/s²
- 0-3 km storm-relative helicity
- 59 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.2
The text
As transmitted.
137 WHUS42 KKEY 060934 CFWKEY Coastal Hazard Message National Weather Service Key West FL 434 AM EST Mon Dec 6 2021 FLZ077-078-070100- /O.CAN.KKEY.CF.S.0011.000000T0000Z-211206T1000Z/ /O.NEW.KKEY.CF.S.0012.211207T0100Z-211207T1100Z/ Monroe Middle Keys-Monroe Lower Keys- 434 AM EST Mon Dec 6 2021 * WHAT...Minor saltwater flooding. * WHERE...Middle and Lower Florida Keys. * WHEN...From this evening 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. && $$ CLR
2 follow-up statements
783 WHUS42 KKEY 070310 CFWKEY Coastal Hazard Message National Weather Service Key West FL 1010 PM EST Mon Dec 6 2021 FLZ077-078-071100- /O.CON.KKEY.CF.S.0012.000000T0000Z-211207T1100Z/ Monroe Middle Keys-Monroe Lower Keys- 1010 PM EST Mon Dec 6 2021 * WHAT...Minor saltwater flooding. * WHERE...Middle and Lower Florida Keys. * WHEN...From this evening through late tonight. * IMPACTS...Minor saltwater flooding of low elevation streets and lots is likely. Some storm drains will overflow, and some seawalls and docks will be overtopped. Boaters can expect less clearance under fixed bridges. Motorists should remember that persistent puddles around the times of high tide are almost certain to contain a mix of saltwater. PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not drive through flooded roadways. && $$ CLR/KBK
198 WHUS42 KKEY 070934 CFWKEY Coastal Hazard Message National Weather Service Key West FL 434 AM EST Tue Dec 7 2021 FLZ077-078-071045- /O.CAN.KKEY.CF.S.0012.000000T0000Z-211207T1100Z/ Monroe Middle Keys-Monroe Lower Keys- 434 AM EST Tue Dec 7 2021 The Coastal Flood Statement is cancelled for the Middle and Lower Keys. $$ CLR
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.