Alert archive / Florida / Coastal Flood Statements in 2020
Coastal Flood Statement 21, NWS Key West, FL
NWS Key West, FL issued this coastal flood statement at Nov 6, 2020, 8:11 AM EST for Monroe County, Florida. It was in force for 49 hr.
The area
The counties it named.
The facts
- Issued
- Nov 6, 2020, 8:11 AM EST (13:11 UTC)
- Expired
- Nov 8, 2020, 9:00 AM EST
- In force
- 49 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 13:11 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, 1.2 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
- 1031 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 702 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- -27 m²/s²
- 0-3 km storm-relative helicity
- -9 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
384 WHUS42 KKEY 061311 CFWKEY Coastal Hazard Message National Weather Service Key West FL 811 AM EST Fri Nov 6 2020 FLZ076>078-071400- /O.NEW.KKEY.CF.S.0021.201106T1311Z-201107T1400Z/ Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys- 811 AM EST Fri Nov 6 2020 * WHAT...Minor saltwater flooding. * WHERE...Florida Keys. * WHEN...Through Saturday 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. * ADDITIONAL DETAILS...Minor coastal flooding is currently ongoing in the Upper Keys. Minor flooding will persist with little to no relief during low tide. For Middle and Lower Keys, minor coastal flooding is expected around the time of the next high tide, which will occur late this evening and overnight. PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not drive through flooded roadways. && $$
1 follow-up statement
114 WHUS42 KKEY 071316 CFWKEY Coastal Hazard Message National Weather Service Key West FL 816 AM EST Sat Nov 7 2020 FLZ076>078-081400- /O.EXT.KKEY.CF.S.0021.000000T0000Z-201108T1400Z/ Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys- 816 AM EST Sat Nov 7 2020 * WHAT...Minor saltwater flooding. * WHERE...Florida Keys. * WHEN...Through Sunday morning. * IMPACTS...Minor saltwater flooding of low elevation streets and lots is likely. Some storm drains will overflow, and some seawalls and docks will be overtopped. Boaters can expect less clearance under fixed bridges. Motorists should remember that persistent puddles around the times of high tide are almost certain to contain a mix of saltwater. * ADDITIONAL DETAILS...Minor coastal flooding is currently ongoing in the Upper Keys. Minor flooding will persist with little to no relief during low tide. For Middle and Lower Keys, minor coastal flooding is expected around the time of the next high tide, which will occur during the overnight and into the early morning hours of Sunday. PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not drive through flooded roadways. && $$
The office that day
Everything else NWS Key West, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 6, 5:01 PM EST | Small Craft Advisory | KEY | 17 hr |
Nearby
Coastal Flood Statements in Florida, 2020Every coastal flood statement 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.