Alert archive / Florida / Coastal Flood Statements in 2026
Coastal Flood Statement 2, NWS Key West, FL
NWS Key West, FL issued this coastal flood statement at Apr 8, 2026, 4:21 AM EDT for Monroe County, Florida. It was in force for 70 hr.
The area
The counties it named.
The facts
- Issued
- Apr 8, 2026, 4:21 AM EDT (08:21 UTC)
- Expired
- Apr 11, 2026, 2:07 AM EDT
- In force
- 70 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 08:20 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, 8.4 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
- 418 J/kg
- Mixed-layer CIN
- -38 J/kg
- Mixed-layer LCL
- 770 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- -40 m²/s²
- 0-3 km storm-relative helicity
- -17 m²/s²
- Significant tornado parameter
- -0.1
- Supercell composite
- -1.4
The text
As transmitted.
213 WHUS42 KKEY 080821 CFWKEY Coastal Hazard Message National Weather Service Key West FL 421 AM EDT Wed Apr 8 2026 FLZ076-077-081630- /O.NEW.KKEY.CF.S.0002.260408T0821Z-260409T0900Z/ Monroe Upper Keys-Monroe Middle Keys- 421 AM EDT Wed Apr 8 2026 ...COASTAL FLOOD STATEMENT IN EFFECT... * WHAT...Minor saltwater flooding. * WHERE...Upper and 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. * ADDITIONAL DETAILS...Strong to gale force winds north of the Florida Keys are generating enhanced swell along the western coastline of Florida. The swell, in turn, is causing elevated waters along the Middle and Upper Keys. PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not drive through flooded roadways. && $$
10 follow-up statements
229 WHUS42 KKEY 082020 CFWKEY Coastal Hazard Message National Weather Service Key West FL 420 PM EDT Wed Apr 8 2026 FLZ076-077-090430- /O.CON.KKEY.CF.S.0002.000000T0000Z-260409T0900Z/ Monroe Upper Keys-Monroe Middle Keys- 420 PM EDT Wed Apr 8 2026 ...COASTAL FLOOD STATEMENT REMAINS IN EFFECT... * WHAT...Minor saltwater flooding. * WHERE...Upper and Middle Florida Keys. * WHEN...Through late tonight. * IMPACTS...Minor saltwater flooding of low elevation streets and lots is likely. Some storm drains will overflow, and some seawalls and docks will be overtopped. Boaters can expect less clearance under fixed bridges. Motorists should remember that persistent puddles around the times of high tide are almost certain to contain a mix of saltwater. * ADDITIONAL DETAILS...Strong to gale force winds north of the Florida Keys are generating enhanced swell along the western coastline of Florida. The swell, in turn, is causing elevated waters along the Middle and Upper Keys. PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not drive through flooded roadways. && $$
598 WHUS42 KKEY 090237 CFWKEY Coastal Hazard Message National Weather Service Key West FL 1037 PM EDT Wed Apr 8 2026 FLZ076-077-090900- /O.CON.KKEY.CF.S.0002.000000T0000Z-260409T0900Z/ Monroe Upper Keys-Monroe Middle Keys- 1037 PM EDT Wed Apr 8 2026 ...COASTAL FLOOD STATEMENT REMAINS IN EFFECT... * WHAT...Minor saltwater flooding. * WHERE...Upper and 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. * ADDITIONAL DETAILS...Strong to gale force winds north of the Florida Keys are generating enhanced swell along the western coastline of Florida. The swell, in turn, is causing elevated waters along the Middle and Upper Keys. PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not drive through flooded roadways. && $$
040 WHUS42 KKEY 090816 CFWKEY Coastal Hazard Message National Weather Service Key West FL 416 AM EDT Thu Apr 9 2026 FLZ076-077-091630- /O.EXT.KKEY.CF.S.0002.000000T0000Z-260409T2200Z/ Monroe Upper Keys-Monroe Middle Keys- 416 AM EDT Thu Apr 9 2026 ...COASTAL FLOOD STATEMENT REMAINS IN EFFECT... * WHAT...Minor saltwater flooding. * WHERE...Upper and Middle Florida Keys. * WHEN...Through tonight. * IMPACTS...Minor saltwater flooding of low elevation streets and lots is likely. Some storm drains will overflow, and some seawalls and docks will be overtopped. Boaters can expect less clearance under fixed bridges. Motorists should remember that persistent puddles around the times of high tide are almost certain to contain a mix of saltwater. PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not drive through flooded roadways. && $$
698 WHUS42 KKEY 091959 CFWKEY Coastal Hazard Message National Weather Service Key West FL 359 PM EDT Thu Apr 9 2026 FLZ077-092100- /O.CAN.KKEY.CF.S.0002.000000T0000Z-260409T2200Z/ Monroe Middle Keys- 359 PM EDT Thu Apr 9 2026 $$ FLZ076-100400- /O.EXT.KKEY.CF.S.0002.000000T0000Z-260410T0900Z/ Monroe Upper Keys- 359 PM EDT Thu Apr 9 2026 ...COASTAL FLOOD STATEMENT NOW IN EFFECT THROUGH LATE TONIGHT... * WHAT...Minor saltwater flooding. * WHERE...Upper Florida Keys. * WHEN...Through late tonight. * IMPACTS...Minor saltwater flooding of low elevation streets and lots is likely. Some storm drains will overflow, and some seawalls and docks will be overtopped. Boaters can expect less clearance under fixed bridges. Motorists should remember that persistent puddles around the times of high tide are almost certain to contain a mix of saltwater. * ADDITIONAL DETAILS...Strong to gale force winds north of the Florida Keys are generating enhanced swell along the western coastline of Florida. The swell, in turn, is causing elevated waters along the Middle and Upper Keys. PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not drive through flooded roadways. && $$ DP
926 WHUS42 KKEY 092007 CFWKEY Coastal Hazard Message National Weather Service Key West FL 407 PM EDT Thu Apr 9 2026 FLZ076-100415- /O.CON.KKEY.CF.S.0002.000000T0000Z-260410T0900Z/ Monroe Upper Keys- 407 PM EDT Thu Apr 9 2026 ...COASTAL FLOOD STATEMENT REMAINS IN EFFECT... * 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. * ADDITIONAL DETAILS...Strong to gale force winds north of the Florida Keys are generating enhanced swell along the western coastline of Florida. The swell, in turn, is causing elevated waters along the Middle and Upper Keys. PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not drive through flooded roadways. && $$
731 WHUS42 KKEY 100229 CFWKEY Coastal Hazard Message National Weather Service Key West FL 1029 PM EDT Thu Apr 9 2026 FLZ076-100900- /O.CON.KKEY.CF.S.0002.000000T0000Z-260410T0900Z/ Monroe Upper Keys- 1029 PM EDT Thu Apr 9 2026 ...COASTAL FLOOD STATEMENT REMAINS IN EFFECT... * WHAT...Minor saltwater flooding. * WHERE...Upper Florida Keys. * WHEN...Through early Friday morning. * IMPACTS...Minor saltwater flooding of low elevation streets and lots is likely. Some storm drains will overflow, and some seawalls and docks will be overtopped. Boaters can expect less clearance under fixed bridges. Motorists should remember that persistent puddles around the times of high tide are almost certain to contain a mix of saltwater. * ADDITIONAL DETAILS...Strong to gale force winds north of the Florida Keys are generating enhanced swell along the western coastline of Florida. The swell, in turn, is causing elevated waters along the Middle and Upper Keys. PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not drive through flooded roadways. && $$
132 WHUS42 KKEY 100818 CFWKEY Coastal Hazard Message National Weather Service Key West FL 418 AM EDT Fri Apr 10 2026 FLZ076-101630- /O.EXT.KKEY.CF.S.0002.000000T0000Z-260410T2200Z/ Monroe Upper Keys- 418 AM EDT Fri Apr 10 2026 ...COASTAL FLOOD STATEMENT IN EFFECT THROUGH THIS AFTERNOON... * WHAT...Minor saltwater flooding. * WHERE...Upper Florida Keys. * WHEN...Through this afternoon. * 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. && $$
097 WHUS42 KKEY 102019 CFWKEY Coastal Hazard Message National Weather Service Key West FL 419 PM EDT Fri Apr 10 2026 FLZ076-110430- /O.EXT.KKEY.CF.S.0002.000000T0000Z-260411T1000Z/ Monroe Upper Keys- 419 PM EDT Fri Apr 10 2026 ...COASTAL FLOOD STATEMENT REMAINS IN EFFECT... * WHAT...Minor saltwater flooding. * WHERE...Upper Florida Keys. * WHEN...Through early Saturday morning. * IMPACTS...Minor saltwater flooding of low elevation streets and lots is likely. Some storm drains will overflow, and some seawalls and docks will be overtopped. Boaters can expect less clearance under fixed bridges. Motorists should remember that persistent puddles around the times of high tide are almost certain to contain a mix of saltwater. * ADDITIONAL DETAILS...Strong to gale force winds north of the Florida Keys are generating enhanced swell along the western coastline of Florida. The swell, in turn, is causing elevated waters along the Middle and Upper Keys. PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not drive through flooded roadways. && $$
034 WHUS42 KKEY 110227 CFWKEY Coastal Hazard Message National Weather Service Key West FL 1027 PM EDT Fri Apr 10 2026 FLZ076-111000- /O.CON.KKEY.CF.S.0002.000000T0000Z-260411T1000Z/ Monroe Upper Keys- 1027 PM EDT Fri Apr 10 2026 ...COASTAL FLOOD STATEMENT REMAINS IN EFFECT... * WHAT...Minor saltwater flooding. * WHERE...Upper Florida Keys. * WHEN...Through early 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...Strong to gale force winds north of the Florida Keys are generating enhanced swell along the eastern coastline of Florida. The swell, in turn, is causing elevated waters along the Upper Keys. PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not drive through flooded roadways. && $$
716 WHUS42 KKEY 110607 CFWKEY Coastal Hazard Message National Weather Service Key West FL 207 AM EDT Sat Apr 11 2026 FLZ076-110715- /O.CAN.KKEY.CF.S.0002.000000T0000Z-260411T1000Z/ Monroe Upper Keys- 207 AM EDT Sat Apr 11 2026 ...COASTAL FLOOD STATEMENT IS CANCELLED... Water levels have receded below threshold criteria, therefore the Coastal Flood Statement has expired. $$
What forecasters said that day
The local office's own words before this coastal flood statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Key West, FL wrote its last area forecast discussion before this coastal flood statement went out at Apr 7, 10:11 PM EDT, 6 hours 10 minutes earlier. Its key messages:
- Scattered showers and isolated thunderstorms will wax and wane across the forecast area overnight.
- Bouts of wet weather will continue through at least Wednesday or Wednesday night, with less confidence in rainfall coverage for Thursday.
- Near the end of the week, breezy to possibly windy conditions may return, lasting through early next week.
Area forecast discussion, Apr 7, 10:11 PM EDT, 6 hours 10 minutes before
Area Forecast Discussion National Weather Service Key West FL 1011 PM EDT Tue Apr 7 2026 ...New DISCUSSION, MARINE, AVIATION... .KEY MESSAGES... - Scattered showers and isolated thunderstorms will wax and wane across the forecast area overnight. - Bouts of wet weather will continue through at least Wednesday or Wednesday night, with less confidence in rainfall coverage for Thursday. - Near the end of the week, breezy to possibly windy conditions may return, lasting through early next week. && .DISCUSSION... Issued at 1010 PM EDT Tue Apr 7 2026 A rather busy afternoon and early evening for your Florida Keys Meteorologists. A well-defined, early season island cloud line formed across portions of the Lower and Middle Keys. Many island communities saw measurable rainfall owed to weak steering flow associated with the storms. Estimated rainfall amounts ranged from just a trace of rainfall for some areas, all the way up to 2-4" in a bullseye between Ramrod and the Torch Keys. This along with additional convection in the southeastern Gulf waned shortly before sunset, leaving only a few isolated showers and thunderstorms at this late evening hour. Temperatures are generally in the mid 70s across the Keys, with nighttime satellite products detecting generally partly cloudy skies. For overnight, given the aforementioned radar trends, it is tempting to lower PoPs for the balance of tonight. However, local meteorological expertise suggests several caveats need to be considered. First, as sampled in the 00z evening sounding at KEY, there is still ample convective potential instability, with limited inhibition, for areas that experienced limited earlier activity today. KBYX radar is detecting a number of residual convective boundaries lurking all over the CWA. Finally, the large-scale pattern has not changed over the past 12-24 hours, with a stationary surface front to the north and an upper-level shortwave trough to the west of the Keys to provide synoptic support for ascent. Given these factors, will maintain mid-level chance rain with isolated thunder chances for tonight, although development may take several hours to take place. No changes made to the inherited short-term forecast. && .MARINE... Issued at 1010 PM EDT Tue Apr 7 2026 A frontal boundary stalled north of the Florida Keys will be responsible for breezes becoming gentle to moderate overnight, and scattered showers with isolated thunderstorms across the local waters. Seas will be elevated across western marine zones due to a northwest swell. Breezes are forecast to freshen late in the week to the weekend as the front pushes southward, but confidence is low at this time with regards to timing of onset. && .AVIATION... (00Z TAFS) Issued at 1010 PM EDT Tue Apr 7 2026 Lurking boundaries from earlier storms in the vicinity of the Keys may interact, supporting additional scattered shower and isolated thunderstorms overnight. Confidence is low for this scenario, but this will be reevaluated for the 06z TAF issuance. Confidence is higher that a cloud line will form late tomorrow morning near the terminals. Included mention of VCSH to account for this for now, with later TAF issuances, to address these impacts as confidence increases, including possible TEMPOs. && .PRELIMINARY POINT TEMPS/POPS... Key West 81 70 80 71 / 50 30 40 30 Marathon 80 71 81 72 / 50 40 40 40 && .KEY WATCHES/WARNINGS/ADVISORIES... FL...None. GM...None. && Public/Marine/Fire...BT Aviation/Nowcasts....BT Data Acquisition.....DR Visit us on the web at weather.gov/key Follow us on Facebook and Twitter at: www.facebook.com/nwskeywest www.twitter.com/nwskeywest
Nearby
Coastal Flood Statements in Florida, 2026Every coastal flood statement in 2026
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.