Alert archive / Florida / Coastal Flood Statements in 2021
Coastal Flood Statement 6, NWS Key West, FL
NWS Key West, FL issued this coastal flood statement at Nov 12, 2021, 3:41 PM EST for Monroe County, Florida. It was in force for 43 hr.
The area
The counties it named.
The facts
- Issued
- Nov 12, 2021, 3:41 PM EST (20:41 UTC)
- Expired
- Nov 14, 2021, 10:43 AM EST
- In force
- 43 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 20:40 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, 8.7 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
- 375 J/kg
- Mixed-layer CIN
- -44 J/kg
- Mixed-layer LCL
- 1045 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 32 m²/s²
- 0-3 km storm-relative helicity
- 10 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
609 WHUS42 KKEY 122041 CFWKEY Coastal Hazard Message National Weather Service Key West FL 341 PM EST Fri Nov 12 2021 FLZ076-131000- /O.NEW.KKEY.CF.Y.0004.211112T2041Z-211113T1000Z/ Monroe Upper Keys- 341 PM EST Fri Nov 12 2021 ...COASTAL FLOOD ADVISORY IN EFFECT UNTIL 5 AM EST SATURDAY... * WHAT...Saltwater flooding. * WHERE...Upper Florida Keys. * WHEN...Until 5 AM EST Saturday. * IMPACTS...Saltwater flooding of low elevation streets and lots is expected. 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... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. && $$ FLZ077-131000- /O.NEW.KKEY.CF.S.0006.211112T2041Z-211113T1000Z/ Monroe Middle Keys- 341 PM EST Fri Nov 12 2021 * WHAT...Minor saltwater flooding. * WHERE...Middle Florida Keys. * WHEN...Through late tonight. * IMPACTS...Minor saltwater flooding of low elevation streets and lots is likely. Some storm drains will overflow, and some seawalls and docks will be overtopped. Boaters can expect less clearance under fixed bridges. Motorists should remember that persistent puddles around the times of high tide are almost certain to contain a mix of saltwater. PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not drive through flooded roadways. && $$
4 follow-up statements
539 WHUS42 KKEY 130713 CFWKEY Coastal Hazard Message National Weather Service Key West FL 213 AM EST Sat Nov 13 2021 FLZ076-131600- /O.CAN.KKEY.CF.Y.0004.000000T0000Z-211113T1000Z/ /O.EXB.KKEY.CF.S.0006.000000T0000Z-211113T1600Z/ Monroe Upper Keys- 213 AM EST Sat Nov 13 2021 ...COASTAL FLOOD ADVISORY IS CANCELLED... * WHAT...Minor saltwater flooding. * WHERE...Upper Florida Keys. * WHEN...In effect. * 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. && $$ FLZ077-131600- /O.EXT.KKEY.CF.S.0006.000000T0000Z-211113T1600Z/ Monroe Middle Keys- 213 AM EST Sat Nov 13 2021 * WHAT...Minor saltwater flooding. * WHERE...Middle Florida Keys. * WHEN...Until 11 AM EST this morning. * IMPACTS...Minor saltwater flooding of low elevation streets and lots is likely. Some storm drains will overflow, and some seawalls and docks will be overtopped. Boaters can expect less clearance under fixed bridges. Motorists should remember that persistent puddles around the times of high tide are almost certain to contain a mix of saltwater. PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not drive through flooded roadways. && $$ CLR
675 WHUS42 KKEY 131445 CFWKEY Coastal Hazard Message National Weather Service Key West FL 945 AM EST Sat Nov 13 2021 FLZ077-131545- /O.CAN.KKEY.CF.S.0006.000000T0000Z-211113T1600Z/ Monroe Middle Keys- 945 AM EST Sat Nov 13 2021 The Coastal Flood Statement is cancelled for the Middle Keys. $$ FLZ076-132245- /O.EXT.KKEY.CF.S.0006.000000T0000Z-211114T1000Z/ Monroe Upper Keys- 945 AM EST Sat Nov 13 2021 * WHAT...Minor saltwater flooding. * WHERE...Upper Florida Keys. * WHEN...Through late tonight. * IMPACTS...Minor saltwater flooding of low elevation streets and lots is likely. Some storm drains will overflow, and some seawalls and docks will be overtopped. Boaters can expect less clearance under fixed bridges. Motorists should remember that persistent puddles around the times of high tide are almost certain to contain a mix of saltwater. PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not drive through flooded roadways. && $$
364 WHUS42 KKEY 140924 CFWKEY Coastal Hazard Message National Weather Service Key West FL 424 AM EST Sun Nov 14 2021 FLZ076-141600- /O.EXT.KKEY.CF.S.0006.000000T0000Z-211114T1600Z/ Monroe Upper Keys- 424 AM EST Sun Nov 14 2021 * WHAT...Minor saltwater flooding. * WHERE...Upper Florida Keys. * WHEN...Through this morning. * 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. && $$ CLR
232 WHUS42 KKEY 141543 CFWKEY Coastal Hazard Message National Weather Service Key West FL 1043 AM EST Sun Nov 14 2021 FLZ076-141645- /O.CAN.KKEY.CF.S.0006.000000T0000Z-211114T1600Z/ Monroe Upper Keys- 1043 AM EST Sun Nov 14 2021 The Coastal Flood Statement is cancelled for the Upper Keys. $$
The office that day
Everything else NWS Key West, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 12, 5:45 AM EST | Areal Flood Advisory | KEY | Monroe | 4 hr |
| Nov 12, 6:54 AM EST | Areal Flood Advisory | KEY | Monroe | 94 min |
| Nov 12, 9:58 AM EST | Special Marine Warning | KEY | 18 min | |
| Nov 12, 3:41 PM EST | Coastal Flood Advisory | KEY | Monroe | 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.