Alert archive / Florida / Coastal Flood Statements in 2021
Coastal Flood Statement 1, NWS Key West, FL
NWS Key West, FL issued this coastal flood statement at Jul 5, 2021, 1:12 PM EDT for Monroe County, Florida. It was in force for 25 hr.
The area
The counties it named.
The facts
- Issued
- Jul 5, 2021, 1:12 PM EDT (17:12 UTC)
- Expired
- Jul 6, 2021, 1:53 PM EDT
- In force
- 25 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 17:11 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, 5.2 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
- 1257 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 894 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- -43 m²/s²
- 0-3 km storm-relative helicity
- -36 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
729 WHUS42 KKEY 051712 CFWKEY Coastal Hazard Message National Weather Service Key West FL 112 PM EDT Mon Jul 5 2021 FLZ078-060500- /O.NEW.KKEY.CF.Y.0001.210705T1712Z-210706T1800Z/ Monroe Lower Keys- 112 PM EDT Mon Jul 5 2021 ...COASTAL FLOOD ADVISORY IN EFFECT... * WHAT...Coastal flooding due to Tropical Storm Elsa will result in total water levels a foot to a foot and a half higher than recent high tides. Low lying areas can expect flooding about a foot above ground. * WHERE...Lower Florida Keys. * WHEN...Tonight through Tuesday morning. * IMPACTS...Saltwater flooding of low elevation streets and lots is expected. Some storm drains will overflow, and some seawalls and docks will be overtopped. Motorists should remember that persistent puddles around the times of high tide are almost certain to contain a mix of saltwater. Coastal flooding along south facing shorelines will be exacerbated by heavy wave action and overwash. 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. && $$ FLZ077-060500- /O.NEW.KKEY.CF.S.0001.210705T1712Z-210706T1800Z/ Monroe Middle Keys- 112 PM EDT Mon Jul 5 2021 * WHAT...Minor coastal flooding due to Tropical Storm Elsa may result in total water levels a foot higher than recent high tides. * WHERE...Middle Florida Keys. * WHEN...Tonight through Tuesday morning. * IMPACTS...Minor saltwater flooding of low elevation streets and lots is likely. Some storm drains will overflow, and some seawalls and docks will be overtopped. Motorists should remember that persistent puddles around the times of high tide are almost certain to contain a mix of saltwater. Coastal flooding along south facing shorelines will be exacerbated by wave action and overwash. PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not drive through flooded roadways. && $$ CLR
3 follow-up statements
492 WHUS42 KKEY 060355 CFWKEY Coastal Hazard Message National Weather Service Key West FL 1155 PM EDT Mon Jul 5 2021 FLZ078-061100- /O.CON.KKEY.CF.Y.0001.000000T0000Z-210706T1800Z/ Monroe Lower Keys- 1155 PM EDT Mon Jul 5 2021 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT... * WHAT...Coastal flooding due to Tropical Storm Elsa will result in total water levels a foot to a foot and a half higher than recent high tides. Low lying areas can expect flooding about a foot above ground. * WHERE...Lower Florida Keys. * WHEN...Through Tuesday morning. * IMPACTS...Saltwater flooding of low elevation streets and lots is expected. Some storm drains will overflow, and some seawalls and docks will be overtopped. Motorists should remember that persistent puddles around the times of high tide are almost certain to contain a mix of saltwater. Coastal flooding along south facing shorelines will be exacerbated by heavy wave action and overwash. 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. && $$ FLZ077-061100- /O.CON.KKEY.CF.S.0001.000000T0000Z-210706T1800Z/ Monroe Middle Keys- 1155 PM EDT Mon Jul 5 2021 * WHAT...Minor coastal flooding due to Tropical Storm Elsa may result in total water levels a foot higher than recent high tides. * WHERE...Middle Florida Keys. * WHEN...Through Tuesday morning. * IMPACTS...Minor saltwater flooding of low elevation streets and lots is likely. Some storm drains will overflow, and some seawalls and docks will be overtopped. Motorists should remember that persistent puddles around the times of high tide are almost certain to contain a mix of saltwater. Coastal flooding along south facing shorelines will be exacerbated by wave action and overwash. PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not drive through flooded roadways. && $$ Jacobson
166 WHUS42 KKEY 060913 CFWKEY Coastal Hazard Message National Weather Service Key West FL 513 AM EDT Tue Jul 6 2021 FLZ078-061800- /O.CON.KKEY.CF.Y.0001.000000T0000Z-210706T1800Z/ Monroe Lower Keys- 513 AM EDT Tue Jul 6 2021 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT... * WHAT...Coastal flooding due to Tropical Storm Elsa will result in total water levels a foot to a foot and a half higher than recent high tides. Low lying areas can expect flooding about a foot above ground. * WHERE...Lower Florida Keys. * WHEN...Through this morning. * IMPACTS...Saltwater flooding of low elevation streets and lots is expected. Some storm drains will overflow, and some seawalls and docks will be overtopped. Motorists should remember that persistent puddles around the times of high tide are almost certain to contain a mix of saltwater. Coastal flooding along south facing shorelines will be exacerbated by heavy wave action and overwash. 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. && $$ FLZ077-061800- /O.CON.KKEY.CF.S.0001.000000T0000Z-210706T1800Z/ Monroe Middle Keys- 513 AM EDT Tue Jul 6 2021 * WHAT...Minor coastal flooding due to Tropical Storm Elsa may result in total water levels a foot higher than recent high tides. * WHERE...Middle Florida Keys. * WHEN...Through this morning. * IMPACTS...Minor saltwater flooding of low elevation streets and lots is likely. Some storm drains will overflow, and some seawalls and docks will be overtopped. Motorists should remember that persistent puddles around the times of high tide are almost certain to contain a mix of saltwater. Coastal flooding along south facing shorelines will be exacerbated by wave action and overwash. * ADDITIONAL DETAILS... PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not drive through flooded roadways. && $$ Jacobson
113 WHUS42 KKEY 061753 CFWKEY Coastal Hazard Message National Weather Service Key West FL 153 PM EDT Tue Jul 6 2021 FLZ078-061900- /O.CAN.KKEY.CF.Y.0001.000000T0000Z-210706T1800Z/ Monroe Lower Keys- 153 PM EDT Tue Jul 6 2021 ...COASTAL FLOOD ADVISORY IS CANCELLED... $$ FLZ077-061900- /O.CAN.KKEY.CF.S.0001.000000T0000Z-210706T1800Z/ Monroe Middle Keys- 153 PM EDT Tue Jul 6 2021 ...COASTAL FLOOD STATEMENT IS CANCELLED... $$ CLR
The office that day
Everything else NWS Key West, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 4, 8:27 PM EDT | Small Craft Advisory | KEY | 56 hr | |
| Jul 5, 2:18 AM EDT | Special Marine Warning | KEY | 27 min | |
| Jul 5, 10:47 AM EDT | Special Marine Warning | KEY | 58 min | |
| Jul 5, 11:01 AM EDT | Special Weather Statement | KEY | 44 min | |
| Jul 5, 1:12 PM EDT | Coastal Flood Advisory | KEY | Monroe | 25 hr |
| Jul 5, 6:21 PM EDT | Flood Watch | KEY | Monroe | 19 hr |
| Jul 5, 7:11 PM EDT | Special Marine Warning | KEY | 34 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.