Alert archive / Florida / Coastal Flood Statements in 2021
Coastal Flood Statement 7, NWS Key West, FL
NWS Key West, FL issued this coastal flood statement at Nov 21, 2021, 4:17 AM EST for Monroe County, Florida. It took effect at Nov 21, 2021, 7:00 AM EST. It was in force for 15 hr.
The area
The counties it named.
The facts
- Issued
- Nov 21, 2021, 4:17 AM EST (09:17 UTC)
- In effect from
- Nov 21, 2021, 7:00 AM EST
- Expired
- Nov 21, 2021, 9:58 PM EST
- In force
- 15 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 09:20 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, 9.3 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
- 379 J/kg
- Mixed-layer CIN
- -41 J/kg
- Mixed-layer LCL
- 818 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- -43 m²/s²
- 0-3 km storm-relative helicity
- 35 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
698 WHUS42 KKEY 210917 CFWKEY Coastal Hazard Message National Weather Service Key West FL 417 AM EST Sun Nov 21 2021 FLZ076-220400- /O.NEW.KKEY.CF.S.0007.211121T1200Z-211122T0400Z/ Monroe Upper Keys- 417 AM EST Sun Nov 21 2021 * WHAT...Minor saltwater flooding. * WHERE...Upper Florida Keys, primarily in the Bayside communities of Key Largo. * WHEN...Through this evening. * 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. && $$ Jacobson
2 follow-up statements
967 WHUS42 KKEY 212116 CFWKEY Coastal Hazard Message National Weather Service Key West FL 416 PM EST Sun Nov 21 2021 FLZ076-220400- /O.CON.KKEY.CF.S.0007.000000T0000Z-211122T0400Z/ Monroe Upper Keys- 416 PM EST Sun Nov 21 2021 * WHAT...Minor saltwater flooding. * WHERE...Upper Florida Keys, primarily in the Bayside communities of Key Largo. * WHEN...Through this evening. * IMPACTS...Minor saltwater flooding of low elevation streets and lots is likely. Some storm drains will overflow, and some seawalls and docks will be overtopped. Boaters can expect less clearance under fixed bridges. Motorists should remember that persistent puddles around the times of high tide are almost certain to contain a mix of saltwater. PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not drive through flooded roadways. && $$
343 WHUS42 KKEY 220258 CFWKEY Coastal Hazard Message National Weather Service Key West FL 958 PM EST Sun Nov 21 2021 FLZ076-220400- /O.CAN.KKEY.CF.S.0007.000000T0000Z-211122T0400Z/ Monroe Upper Keys- 958 PM EST Sun Nov 21 2021 The Coastal Flood Statement is cancelled for the Upper Keys of Monroe County. && $$
The office that day
Everything else NWS Key West, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 20, 11:23 PM EST | Small Craft Advisory | KEY | 11 hr |
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.