Alert archive / Florida / Tropical Storm Warnings in 2018
Tropical Storm Warning 1007, NWS Key West, FL
NWS Key West, FL issued this tropical storm warning at Sep 3, 2018, 8:55 AM EDT for Monroe County, Florida. It was in force for 9 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Sep 3, 2018, 8:55 AM EDT (12:55 UTC)
- Expired
- Sep 3, 2018, 5:31 PM EDT
- In force
- 9 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 12:57 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, 0.9 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
- 172 J/kg
- Mixed-layer CIN
- -12 J/kg
- Mixed-layer LCL
- 616 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- -125 m²/s²
- 0-3 km storm-relative helicity
- -120 m²/s²
- Significant tornado parameter
- -0.1
- Supercell composite
- -1.3
The text
As transmitted.
867
WTUS82 KKEY 031255
TCVKEY
URGENT - IMMEDIATE BROADCAST REQUESTED
Gordon Local Watch/Warning Statement/Special Advisory Number 4
National Weather Service Key West FL AL072018
855 AM EDT Mon Sep 3 2018
FLZ076-032100-
/O.NEW.KKEY.TR.W.1007.180903T1255Z-000000T0000Z/
Monroe Upper Keys-
855 AM EDT Mon Sep 3 2018
...TROPICAL STORM WARNING IN EFFECT...
A Tropical Storm Warning means tropical storm-force winds are
expected somewhere within this area within the next 36 hours
* LOCATIONS AFFECTED
- Islamorada
- Key Largo
- Ocean Reef
* WIND
- LATEST LOCAL FORECAST: Below tropical storm force wind
- Peak Wind Forecast: 20-30 mph with gusts to 35 mph
- POTENTIAL THREAT TO LIFE AND PROPERTY: Potential for wind 39 to
57 mph
- PLAN: Plan for hazardous wind of equivalent tropical storm
force due to possible forecast changes in track, size, or
intensity.
- PREPARE: Efforts to protect property should now be
underway. Prepare for limited wind damage.
- ACT: Act now to complete preparations before the wind
becomes hazardous.
- POTENTIAL IMPACTS: Limited
- Damage to porches, awnings, carports, sheds, and unanchored
mobile homes. Unsecured lightweight objects blown about.
- Many large tree limbs broken off. A few trees snapped or
uprooted, but with greater numbers in places where trees
are shallow rooted. Some fences and roadway signs blown
over.
- A few roads impassable from debris, particularly within
urban or heavily wooded places. Hazardous driving
conditions on bridges and other elevated roadways.
- Scattered power and communications outages.
* STORM SURGE
- No storm surge inundation forecast
- POTENTIAL THREAT TO LIFE AND PROPERTY: Little to no storm surge
flooding
- PLAN: There is little to no threat of storm surge flooding.
Rough surf, coastal erosion, and life-threatening rip
currents are possible.
- PREPARE: Little to no preparations for storm surge flooding
are needed.
- ACT: Follow the instructions of local officials. Monitor
forecasts.
- POTENTIAL IMPACTS: Little to None
- Little to no potential impacts from storm surge flooding.
* FLOODING RAIN
- LATEST LOCAL FORECAST:
- Peak Rainfall Amounts: Additional 2-4 inches, with locally
higher amounts
- POTENTIAL THREAT TO LIFE AND PROPERTY: Potential for moderate
flooding rain
- PLAN: Emergency plans should include the potential for
moderate flooding from heavy rain. Evacuations and rescues
are possible.
- PREPARE: Consider protective actions if you are in an area
vulnerable to flooding.
- ACT: Heed any flood watches and warnings. Failure to take
action may result in serious injury or loss of life.
- POTENTIAL IMPACTS: Significant
- Moderate rainfall flooding may prompt several evacuations
and rescues.
- Flood waters can enter some structures or weaken
foundations. Several places may experience expanded areas
of rapid inundation at underpasses, low-lying spots, and
poor drainage areas. Some streets and parking lots take on
moving water as storm drains and retention ponds overflow.
Driving conditions become hazardous. Some road and bridge
closures.
* TORNADO
- LATEST LOCAL FORECAST:
- Situation is somewhat favorable for tornadoes
- POTENTIAL THREAT TO LIFE AND PROPERTY: Potential for a few
tornadoes
- PLAN: Emergency plans should include the potential for a
few tornadoes.
- PREPARE: If your shelter is particularly vulnerable to
tornadoes, prepare to relocate to safe shelter before
hazardous weather arrives.
- ACT: If a tornado warning is issued, be ready to shelter
quickly.
- POTENTIAL IMPACTS: Limited
- The occurrence of isolated tornadoes can hinder the
execution of emergency plans during tropical events.
- A few places may experience tornado damage, along with
power and communications disruptions.
- Locations could realize roofs peeled off buildings,
chimneys toppled, mobile homes pushed off foundations or
overturned, large tree tops and branches snapped off,
shallow-rooted trees knocked over, moving vehicles blown
off roads, and small boats pulled from moorings.
* FOR MORE INFORMATION:
- Family emergency plans: Federal Emergency Management Agency
- http://ready.gov/
- Local weather conditions and forecasts: NWS Key West Florida
- http://www.weather.gov/key/
$$5 follow-up statements
854 WHUS72 KKEY 031318 MWWKEY URGENT - Marine Weather Message National Weather Service Key West FL 918 AM EDT Mon Sep 3 2018 GMZ031-042-052-072-032130- /O.CAN.KKEY.SC.Y.0033.000000T0000Z-180903T1600Z/ /O.NEW.KKEY.TR.W.1007.180903T1318Z-000000T0000Z/ Florida Bay including Barnes Sound, Blackwater Sound, and Buttonwood Sound- Hawk Channel from Ocean Reef to Craig Key out to the reef- Straits of Florida from Ocean Reef to Craig Key out 20 NM- Straits of Florida from Ocean Reef to Craig Key 20 to 60 NM out- 918 AM EDT Mon Sep 3 2018 ...TROPICAL STORM WARNING IN EFFECT... The National Weather Service in Key West has issued a Tropical Storm Warning. The Small Craft Advisory has been cancelled. * WINDS...Northeast to east winds 30 to 40 knots with higher gusts will prevail for most of today. * WAVES/SEAS...Seas will build to 4 to 7 feet. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Tropical Storm Warning means sustained winds of 34 to 63 kt or 39 to 73 mph are expected due to a tropical storm within 36 hours. && $$ GMZ032>035-043-044-053>055-073>075-031600- /O.CON.KKEY.SC.Y.0033.000000T0000Z-180903T1600Z/ Bayside and Gulf side from Craig Key to west end of Seven Mile Bridge- Gulf waters from East Cape Sable to Chokoloskee 20 to 60 NM out and beyond 5 fathoms- Gulf of Mexico including Dry Tortugas and Rebecca Shoal Channel- Gulf of Mexico from west end of Seven Mile Bridge to Halfmoon Shoal out to 5 Fathoms- Hawk Channel from Craig Key to west end of Seven Mile Bridge out to the reef- Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal out to the reef- Straits of Florida from Craig Key to west end of Seven Mile Bridge out 20 NM- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal out 20 NM- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas out 20 NM- Straits of Florida from Craig Key to west end of Seven Mile Bridge 20 to 60 NM out- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal 20 to 60 NM out- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas 20 to 60 NM out- 918 AM EDT Mon Sep 3 2018 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL NOON EDT TODAY... * WINDS...Northeast to east winds near 20 knots with gusts of 25 to 30 knots will prevail for most of today. * WAVES/SEAS...Seas will build to 4 to 7 feet across most of the Straits of Florida. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 20 to 33 knots... or seas of 7 feet or greater...are expected to produce hazardous conditions for small craft. Inexperienced boaters...especially those with smaller vessels...should avoid operating in these conditions. && $$
639
WTUS82 KKEY 031518
TCVKEY
URGENT - IMMEDIATE BROADCAST REQUESTED
Gordon Local Watch/Warning Statement/Advisory Number 5
National Weather Service Key West FL AL072018
1118 AM EDT Mon Sep 3 2018
FLZ076-032330-
/O.CON.KKEY.TR.W.1007.000000T0000Z-000000T0000Z/
Monroe Upper Keys-
1118 AM EDT Mon Sep 3 2018
...TROPICAL STORM WARNING REMAINS IN EFFECT...
* LOCATIONS AFFECTED
- Islamorada
- Key Largo
- Ocean Reef
* WIND
- LATEST LOCAL FORECAST: Below tropical storm force wind
- Peak Wind Forecast: 40 to 50 mph with higher gusts in squalls
- POTENTIAL THREAT TO LIFE AND PROPERTY: Potential for wind 39 to
57 mph
- The wind threat has remained nearly steady from the
previous assessment.
- PLAN: Plan for hazardous wind of equivalent tropical storm
force due to possible forecast changes in track, size, or
intensity.
- PREPARE: Efforts to protect property should now be
underway. Prepare for limited wind damage.
- ACT: Act now to complete preparations before the wind
becomes hazardous.
- POTENTIAL IMPACTS: Limited
- Damage to porches, awnings, carports, sheds, and unanchored
mobile homes. Unsecured lightweight objects blown about.
- Many large tree limbs broken off. A few trees snapped or
uprooted, but with greater numbers in places where trees
are shallow rooted. Some fences and roadway signs blown
over.
- A few roads impassable from debris, particularly within
urban or heavily wooded places. Hazardous driving
conditions on bridges and other elevated roadways.
- Scattered power and communications outages.
* STORM SURGE
- No storm surge inundation forecast
- POTENTIAL THREAT TO LIFE AND PROPERTY: Little to no storm surge
flooding
- The storm surge threat has remained nearly steady from the
previous assessment.
- PLAN: There is little to no threat of storm surge flooding.
Rough surf, coastal erosion, and life-threatening rip
currents are possible.
- PREPARE: Little to no preparations for storm surge flooding
are needed.
- ACT: Follow the instructions of local officials. Monitor
forecasts.
- POTENTIAL IMPACTS: Little to None
- Little to no potential impacts from storm surge flooding.
* FLOODING RAIN
- LATEST LOCAL FORECAST:
- Peak Rainfall Amounts: Additional 1-3 inches, with locally
higher amounts
- POTENTIAL THREAT TO LIFE AND PROPERTY: Potential for moderate
flooding rain
- The flooding rain threat has remained nearly steady from
the previous assessment.
- PLAN: Emergency plans should include the potential for
moderate flooding from heavy rain. Evacuations and rescues
are possible.
- PREPARE: Consider protective actions if you are in an area
vulnerable to flooding.
- ACT: Heed any flood watches and warnings. Failure to take
action may result in serious injury or loss of life.
- POTENTIAL IMPACTS: Significant
- Moderate rainfall flooding may prompt several evacuations
and rescues.
- Flood waters can enter some structures or weaken
foundations. Several places may experience expanded areas
of rapid inundation at underpasses, low-lying spots, and
poor drainage areas. Some streets and parking lots take on
moving water as storm drains and retention ponds overflow.
Driving conditions become hazardous. Some road and bridge
closures.
* TORNADO
- LATEST LOCAL FORECAST:
- Situation is somewhat favorable for tornadoes
- POTENTIAL THREAT TO LIFE AND PROPERTY: Potential for a few
tornadoes
- The tornado threat has remained nearly steady from the
previous assessment.
- PLAN: Emergency plans should include the potential for a
few tornadoes.
- PREPARE: If your shelter is particularly vulnerable to
tornadoes, prepare to relocate to safe shelter before
hazardous weather arrives.
- ACT: If a tornado warning is issued, be ready to shelter
quickly.
- POTENTIAL IMPACTS: Limited
- The occurrence of isolated tornadoes can hinder the
execution of emergency plans during tropical events.
- A few places may experience tornado damage, along with
power and communications disruptions.
- Locations could realize roofs peeled off buildings,
chimneys toppled, mobile homes pushed off foundations or
overturned, large tree tops and branches snapped off,
shallow-rooted trees knocked over, moving vehicles blown
off roads, and small boats pulled from moorings.
* FOR MORE INFORMATION:
- Family emergency plans: Federal Emergency Management Agency
- http://ready.gov/
- Local weather conditions and forecasts: NWS Key West Florida
- http://www.weather.gov/key/
$$305 WHUS72 KKEY 031538 MWWKEY URGENT - Marine Weather Message National Weather Service Key West FL 1138 AM EDT Mon Sep 3 2018 GMZ031-042-052-072-032345- /O.CON.KKEY.TR.W.1007.000000T0000Z-000000T0000Z/ Florida Bay including Barnes Sound, Blackwater Sound, and Buttonwood Sound- Hawk Channel from Ocean Reef to Craig Key out to the reef- Straits of Florida from Ocean Reef to Craig Key out 20 NM- Straits of Florida from Ocean Reef to Craig Key 20 to 60 NM out- 1138 AM EDT Mon Sep 3 2018 ...TROPICAL STORM WARNING REMAINS IN EFFECT... * WINDS...Northeast to east winds 30 to 40 knots with higher gusts will prevail for most of today. * WAVES/SEAS...Seas will build to 4 to 7 feet. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Tropical Storm Warning means sustained winds of 34 to 63 kt or 39 to 73 mph are expected due to a tropical storm within 36 hours. && $$ GMZ032>035-043-044-053>055-073>075-032100- /O.EXT.KKEY.SC.Y.0033.000000T0000Z-180903T2100Z/ Bayside and Gulf side from Craig Key to west end of Seven Mile Bridge- Gulf waters from East Cape Sable to Chokoloskee 20 to 60 NM out and beyond 5 fathoms- Gulf of Mexico including Dry Tortugas and Rebecca Shoal Channel- Gulf of Mexico from west end of Seven Mile Bridge to Halfmoon Shoal out to 5 Fathoms- Hawk Channel from Craig Key to west end of Seven Mile Bridge out to the reef- Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal out to the reef- Straits of Florida from Craig Key to west end of Seven Mile Bridge out 20 NM- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal out 20 NM- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas out 20 NM- Straits of Florida from Craig Key to west end of Seven Mile Bridge 20 to 60 NM out- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal 20 to 60 NM out- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas 20 to 60 NM out- 1138 AM EDT Mon Sep 3 2018 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 5 PM EDT THIS AFTERNOON... * WINDS...Northeast to east winds near 20 knots with gusts of 25 to 30 knots will prevail for most of today over portions of Keys waters west of Craig Key. * WAVES/SEAS...Seas will build to 4 to 7 feet across most of the Straits of Florida. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 20 to 33 knots... or seas of 7 feet or greater...are expected to produce hazardous conditions for small craft. Inexperienced boaters...especially those with smaller vessels...should avoid operating in these conditions. && $$
207 WHUS72 KKEY 032125 MWWKEY URGENT - Marine Weather Message National Weather Service Key West FL 525 PM EDT Mon Sep 3 2018 GMZ031-042-052-072-040400- /O.CAN.KKEY.TR.W.1007.000000T0000Z-000000T0000Z/ /O.EXB.KKEY.SC.Y.0033.000000T0000Z-180904T0900Z/ Florida Bay including Barnes Sound, Blackwater Sound, and Buttonwood Sound- Hawk Channel from Ocean Reef to Craig Key out to the reef- Straits of Florida from Ocean Reef to Craig Key out 20 NM- Straits of Florida from Ocean Reef to Craig Key 20 to 60 NM out- 525 PM EDT Mon Sep 3 2018 ...SMALL CRAFT ADVISORY IN EFFECT TONIGHT... ...TROPICAL STORM WARNING IS CANCELLED... The National Weather Service in Key West has issued a Small Craft Advisory, which is in effect until 5 AM EDT Tuesday. The Tropical Storm Warning has been cancelled. * WINDS...East to southeast winds 20 to 25 knots with isolated gusts of 25 to 30 knots will prevail tonight across Florida Bay, Hawk Channel adjoining the Upper Keys, and the Florida Straits waters out 60 nm from Ocean Reef to Craig Key. * WAVES/SEAS...Seas 6 to 9 feet across most of the Straits of Florida. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 20 to 33 knots... or seas of 7 feet or greater...are expected to produce hazardous conditions for small craft. Inexperienced boaters...especially those with smaller vessels...should avoid operating in these conditions. && $$ GMZ032>035-043-044-053>055-073>075-040400- /O.EXT.KKEY.SC.Y.0033.000000T0000Z-180904T0900Z/ Bayside and Gulf side from Craig Key to west end of Seven Mile Bridge- Gulf waters from East Cape Sable to Chokoloskee 20 to 60 NM out and beyond 5 fathoms- Gulf of Mexico including Dry Tortugas and Rebecca Shoal Channel- Gulf of Mexico from west end of Seven Mile Bridge to Halfmoon Shoal out to 5 Fathoms- Hawk Channel from Craig Key to west end of Seven Mile Bridge out to the reef- Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal out to the reef- Straits of Florida from Craig Key to west end of Seven Mile Bridge out 20 NM- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal out 20 NM- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas out 20 NM- Straits of Florida from Craig Key to west end of Seven Mile Bridge 20 to 60 NM out- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal 20 to 60 NM out- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas 20 to 60 NM out- 525 PM EDT Mon Sep 3 2018 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT TONIGHT... * WINDS...Southeast winds 20 to 25 knots with isolated gusts of 25 to 30 knots will prevail tonight across the Nearshore Gulf waters north of the Lower and Middle Keys, Hawk Channel adjoining the Middle and Lower Keys, the Offshore Gulf waters 20 to 60 nm west of Mainland Monroe County, the Florida Straits waters out 60 nm from Craig Key to 20 nm west of the Dry Tortugas, and the Rebecca Shoal and Dry Tortugas waters. * WAVES/SEAS...Seas 6 to 9 feet across most of the Straits of Florida. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 20 to 33 knots... or seas of 7 feet or greater...are expected to produce hazardous conditions for small craft. Inexperienced boaters...especially those with smaller vessels...should avoid operating in these conditions. && $$ Futterman
001
WTUS82 KKEY 032131
TCVKEY
URGENT - IMMEDIATE BROADCAST REQUESTED
Gordon Local Watch/Warning Statement/Advisory Number 6
National Weather Service Key West FL AL072018
531 PM EDT Mon Sep 3 2018
FLZ076-032245-
/O.CAN.KKEY.TR.W.1007.000000T0000Z-000000T0000Z/
Monroe Upper Keys-
531 PM EDT Mon Sep 3 2018
...TROPICAL STORM WARNING IS CANCELLED...
* LOCATIONS AFFECTED
- Islamorada
- Key Largo
- Ocean Reef
* WIND
- LATEST LOCAL FORECAST: Below tropical storm force wind
- Peak Wind Forecast: 15-25 mph with gusts to 30 mph
- POTENTIAL THREAT TO LIFE AND PROPERTY: Wind less than 39 mph
- The wind threat has decreased from the previous assessment.
- PLAN: The sustained wind should remain less than tropical
storm force. Conditions may still be gusty.
- PREPARE: Listen for any instructions from local officials.
- ACT: Ensure emergency readiness should the forecast change.
- REALIZED IMPACTS: Being Assessed
- Little to no additional wind impacts expected. Community
officials are now assessing the extent of actual wind
impacts accordingly.
* STORM SURGE
- No storm surge inundation forecast
- POTENTIAL THREAT TO LIFE AND PROPERTY: Little to no storm surge
flooding
- The storm surge threat has remained nearly steady from the
previous assessment.
- PLAN: There is little to no threat of storm surge flooding.
Rough surf, coastal erosion, and life-threatening rip
currents are possible.
- PREPARE: Little to no preparations for storm surge flooding
are needed.
- ACT: Follow the instructions of local officials. Monitor
forecasts.
- POTENTIAL IMPACTS: Little to None
- Little to no potential impacts from storm surge flooding.
* FLOODING RAIN
- LATEST LOCAL FORECAST:
- Peak Rainfall Amounts: Additional around 1 inch
- POTENTIAL THREAT TO LIFE AND PROPERTY: Potential for localized
flooding rain
- The flooding rain threat has decreased from the previous
assessment.
- PLAN: Emergency plans should include the potential for
localized flooding from heavy rain.
- PREPARE: Consider protective actions if you are in an area
vulnerable to flooding.
- ACT: Heed any flood watches and warnings.
- POTENTIAL IMPACTS: Limited
- Localized rainfall flooding may prompt a few evacuations.
- Flood waters can enter a few structures, especially in
usually vulnerable spots. A few places where rapid ponding
of water occurs at underpasses, low-lying spots, and poor
drainage areas. Several storm drains and retention ponds
become near-full and begin to overflow. Some brief road and
bridge closures.
* TORNADO
- LATEST LOCAL FORECAST:
- Situation is somewhat favorable for tornadoes
- POTENTIAL THREAT TO LIFE AND PROPERTY: Potential for a few
tornadoes
- The tornado threat has remained nearly steady from the
previous assessment.
- PLAN: Plans should still include the potential for a few
tornadoes.
- PREPARE: Keep informed should additional weather alerts be
needed.
- ACT: If a tornado warning is issued, be ready to shelter
quickly.
- POTENTIAL IMPACTS: Limited
- The occurrence of isolated tornadoes can hinder the
execution of emergency plans during tropical events.
- A few places may experience tornado damage, along with
power and communications disruptions.
- Locations could realize roofs peeled off buildings,
chimneys toppled, mobile homes pushed off foundations or
overturned, large tree tops and branches snapped off,
shallow-rooted trees knocked over, moving vehicles blown
off roads, and small boats pulled from moorings.
* FOR MORE INFORMATION:
- Family emergency plans: Federal Emergency Management Agency
- http://ready.gov/
- Local weather conditions and forecasts: NWS Key West Florida
- http://www.weather.gov/key/
$$What forecasters said that day
The local office's own words before this tropical storm warning 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 tropical storm warning went out at Sep 2, 10:46 PM EDT, 10 hours 9 minutes earlier.
Area forecast discussion, Sep 2, 10:46 PM EDT, 10 hours 9 minutes before
Area Forecast Discussion National Weather Service Key West FL 1046 PM EDT Sun Sep 2 2018 .DISCUSSION... Mean layer ridging centered near the Delmarva Peninsula persists across the southeastern United States and the Florida Peninsula. Riding along the ridge's southern flank is a sharp tropical wave, now centered southwest of Andros Island. There are two observations from the northern Cuban coast indicating light southwest and west surface winds, although its hard to tell if these have been contaminated by afternoon convection. The 00Z MYNN RAOB observation sampled 31 and 33 knot ESE winds at 1 and 2 kft, respectively. For comparison, the same winds on the KKEY RAOB were 24 and 28 knots. Across the Florida Keys, east to southeast winds average near 20 knots with land locations gusting frequently to 25 mph. Temperatures are in the lower 80s, with dewpoints in the lower 70s. The KBYX radar continues to detect widely scattered squalls which have regularly produced gusts near 30 knots. Overnight, squalls should continue, likely with more coverage and a little more convective gusto. We advertise 70% rain chances overnight, followed by 80% chances on Monday. The forecast is on track and needs no adjustments at this time. && .MARINE... Northeast to east breezes will freshen tonight across all coastal waters as a tropical wave near north-central Cuba and the central Bahamas approaches the Florida Keys. This tropical wave likely will organize into a tropical depression tonight or Monday morning, as it moves northwestward across the Cay Sal Bank and the Straits of Florida. The strongest winds will be on the northern and eastern flanks of this system, and a sharp wind shift to the southeast can be expected as this system passes. Conditions will begin to improve Monday night. && .AVIATION... Through 03/24Z, prevailing VFR conditions are expected at both EYW and MTH. However, numerous showers with moderate to heavy precipitation, scattered showers and squalls with heavy to extreme precipitation, and isolated thunderstorms with extreme precipitation will move from about 090/25 knots, through about 03/12Z. Between 03/12Z and 03/18Z, cell motion vectors will turn sharply from 160/20 knots. Several short-lived sub-VFR (possibly IFR) ceiling/visibility episodes are likely at both EYW and MTH through 03/24Z. && .KEY WATCHES/WARNINGS/ADVISORIES... FL...None. GM...Small Craft Advisory for GMZ031>035- 042>044-052>055-072>075. && Public/Marine/Fire...CLR Aviation/Nowcasts....Kasper Data Collection......Chesser Visit us on the web at weather.gov/key Follow us on Facebook and Twitter at: www.facebook.com/nwskeywest www.twitter.com/nwskeywest
Hazardous weather outlook, Sep 3, 5:54 AM EDT, 3 hours 1 minute before
Hazardous Weather Outlook National Weather Service Key West FL 554 AM EDT Mon Sep 3 2018 FLZ076>078-GMZ031>035-042>044-052>055-072>075-041000- Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys- Florida Bay including Barnes Sound, Blackwater Sound, and Buttonwood Sound- Bayside and Gulf side from Craig Key to west end of Seven Mile Bridge- Gulf waters from East Cape Sable to Chokoloskee 20 to 60 NM out and beyond 5 fathoms- Gulf of Mexico including Dry Tortugas and Rebecca Shoal Channel- Gulf of Mexico from west end of Seven Mile Bridge to Halfmoon Shoal out to 5 Fathoms- Hawk Channel from Ocean Reef to Craig Key out to the reef- Hawk Channel from Craig Key to west end of Seven Mile Bridge out to the reef- Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal out to the reef- Straits of Florida from Ocean Reef to Craig Key out 20 NM- Straits of Florida from Craig Key to west end of Seven Mile Bridge out 20 NM- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal out 20 NM- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas out 20 NM- Straits of Florida from Ocean Reef to Craig Key 20 to 60 NM out- Straits of Florida from Craig Key to west end of Seven Mile Bridge 20 to 60 NM out- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal 20 to 60 NM out- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas 20 to 60 NM out- 554 AM EDT Mon Sep 3 2018 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE FLORIDA KEYS AND ADJACENT COASTAL WATERS. .DAY ONE...TODAY AND TONIGHT Scattered squalls and isolated thunderstorms are expected along the Florida Keys and adjacent coastal waters today. The primary hazards will be lightning strikes and local wind gusts of 40 to perhaps 50 mph in a few of the stronger storms. In addition, a Small Craft Advisory is in effect for all coastal waters of the Florida Keys. Furthermore, some island communities could receive 1 to perhaps 3 inches of rainfall today. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY Isolated thunderstorms are expected Tuesday through Saturday. The primary thunderstorm hazards will be lightning strikes. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated. APA
In the hours before
Local storm report, Sep 3, 7:19 AM EDT, 1 hour 36 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KEY WEST FL
719 AM EDT MON SEP 3 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0700 AM MARINE TSTM WIND 11 ESE CARD SOUND BRIDG 25.23N 80.21W
09/03/2018 M53 MPH GMZ052 FL MESONET
A WIND GUST OF 53 MPH...OR 46 KTS...WAS MEASURED AT THE
WEATHERFLOW MESONET STATION IN CARYSFORT REEF LIGHT...AT
0700 EDT.
&&
BTLocal storm report, Sep 3, 7:35 AM EDT, 1 hour 20 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KEY WEST FL
735 AM EDT MON SEP 3 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0720 AM MARINE TSTM WIND 11 ESE CARD SOUND BRIDG 25.23N 80.21W
09/03/2018 M64 MPH GMZ052 FL MESONET
A WIND GUST OF 64 MPH...OR 56 KTS...WAS MEASURED AT THE
WEATHERFLOW MESONET STATION IN CARYSFORT REEF LIGHT AT
0720 EDT.
&&
BTLocal storm report, Sep 3, 7:39 AM EDT, 1 hour 16 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KEY WEST FL
739 AM EDT MON SEP 3 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0720 AM MARINE TSTM WIND NE OCEAN REEF 25.32N 80.28W
09/03/2018 M44 MPH UPPER KEYS IN MONR FL MESONET
A WIND GUST OF 44 MPH...OR 38 KTS...WAS MEASURED BY THE
OCEAN REEF CWOP OBSERVATION STATION AT 0720 EDT.
&&
BTSpecial weather statement, Sep 3, 7:47 AM EDT, 1 hour 8 minutes before
Special Weather Statement
National Weather Service Key West FL
747 AM EDT MON SEP 3 2018
FLZ076-031245-
Monroe Upper Keys FL-
747 AM EDT MON SEP 3 2018
...SIGNIFICANT WEATHER ADVISORY FOR UPPER KEYS IN MONROE COUNTY UNTIL
845 AM EDT...
At 746 AM EDT, National Weather Service Meteorologists detected fast
moving showers and a few thunderstorms along a line extending from 8
miles northwest of Jewfish Creek Bridge to 13 miles southeast of
Ocean Reef. Movement was northwest at 35 mph.
Wind gusts up to 50 mph will be possible with these storms.
Locations impacted include...
Jewfish Creek Bridge, Key Largo, Ocean Reef, Route 1/card Sound,
Route 1/card Sound Road Split and North Key Largo.
This includes US 1 between mile markers 106 and 112.
LAT...LON 2528 8025 2514 8033 2514 8036 2524 8047
2526 8043 2523 8038 2529 8039 2528 8036
2529 8034 2528 8033 2532 8029 2533 8030
2533 8027 2535 8027 2535 8026 2534 8025
2533 8026 2532 8025
TIME...MOT...LOC 1146Z 115DEG 31KT 2530 8044 2521 8010
11Special weather statement, Sep 3, 8:44 AM EDT, 11 minutes before
Special Weather Statement
National Weather Service Key West FL
844 AM EDT MON SEP 3 2018
FLZ076-031345-
Monroe Upper Keys FL-
844 AM EDT MON SEP 3 2018
...SIGNIFICANT WEATHER ADVISORY FOR UPPER KEYS IN MONROE COUNTY UNTIL
945 AM EDT...
At 843 AM EDT, National Weather Service Meteorologists detected
strong thunderstorms along a line extending from near Jewfish Creek
Bridge to 35 miles southeast of Route 1/card Sound. Movement was
northwest at 25 mph.
Winds in excess of 45 mph will be possible with these storms.
Locations impacted include...
Ocean Reef and North Key Largo.
LAT...LON 2528 8025 2515 8033 2522 8041 2524 8040
2523 8038 2526 8038 2529 8036 2529 8034
2528 8033 2532 8029 2533 8030 2533 8027
2534 8028 2535 8027 2535 8026 2534 8025
2533 8026 2532 8025
TIME...MOT...LOC 1243Z 147DEG 24KT 2526 8036 2482 7995
11Local storm report, Sep 3, 8:48 AM EDT, 7 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KEY WEST FL
848 AM EDT MON SEP 3 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0805 AM NON-TSTM WND GST NE OCEAN REEF 25.32N 80.28W
09/03/2018 M44 MPH UPPER KEYS IN MONR FL MESONET
A WIND GUST OF 44 MPH...OR 38 KTS...WAS MEASURED BY THE
OCEAN REEF CWOP OBSERVATION STATION AT 0805 EDT.
&&
BTThe office that day
Everything else NWS Key West, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 3, 6:20 AM EDT | Special Marine Warning | KEY | 55 min | |
| Sep 3, 6:48 AM EDT | Special Weather Statement | KEY | 57 min | |
| Sep 3, 7:21 AM EDT | Special Marine Warning | KEY | 54 min | |
| Sep 3, 7:47 AM EDT | Special Weather Statement | KEY | Miami-Dade | 58 min |
| Sep 3, 8:20 AM EDT | Special Marine Warning | KEY | 55 min | |
| Sep 3, 8:44 AM EDT | Special Weather Statement | KEY | Miami-Dade | 61 min |
| Sep 3, 6:54 PM EDT | Special Marine Warning | KEY | 41 min | |
| Sep 3, 7:33 PM EDT | Special Marine Warning | KEY | 57 min | |
| Sep 3, 7:58 PM EDT | Special Marine Warning | KEY | 17 min |
Nearby
Tropical Storm Warnings in Florida, 2018Every tropical storm warning in 2018
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.