Alert archive / Florida / Special Weather Statements in 2017

Special Weather Statement, NWS Miami, FL

July 30, 2017Collier County, Florida

NWS Miami, FL issued this special weather statement at Jul 30, 2017, 8:48 PM EDT for Collier County, Florida. It was in force for 57 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 30, 2017, 8:48 PM EDT (00:48 UTC)
Expired
Jul 30, 2017, 9:45 PM EDT
In force
57 min
Issued by
NWS Miami, FL

County Collier County, FL

The radar

The Miami radar (KAMX), 132 km from the middle of the area, began a volume at 00:48 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, 0.8 hours before the alert went out and 139 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.

Skew-T log-pSkew-T log-p diagram, Miami, FL at 00:00Z on 2017-07-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 257 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Miami, FL at 00:00Z on 2017-07-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 79 square meters per square second.1939Sfc1 km3 km6 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
257 J/kg
Mixed-layer CIN
-89 J/kg
Mixed-layer LCL
1070 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
79 m²/s²
0-3 km storm-relative helicity
94 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Miami, FL wrote its last area forecast discussion before this special weather statement went out at Jul 30, 8:46 PM EDT, 2 minutes earlier.

Area forecast discussion, Jul 30, 8:46 PM EDT, 2 minutes before
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Hazardous weather outlook, Jul 30, 3:46 PM EDT, 5 hours 2 minutes before
Hazardous Weather Outlook for South Florida
National Weather Service Miami FL
346 PM EDT Sun Jul 30 2017

AMZ610-630-650-651-670-671-FLZ063-066>075-168-172>174-GMZ656-657-676-
310800-
Lake Okeechobee-Biscayne Bay-
Coastal waters from Jupiter Inlet to Deerfield Beach FL out 20 NM-
Coastal waters from Deerfield Beach to Ocean Reef FL out 20 NM-
Waters from Jupiter Inlet to Deerfield Beach FL from 20 to 60 NM-
Waters from Deerfield Beach to Ocean Reef FL from 20 to 60 NM
excluding the territorial waters of Bahamas-Glades-Hendry-
Inland Palm Beach-Metro Palm Beach-Coastal Collier-Inland Collier-
Inland Broward-Metro Broward-Inland Miami-Dade-Metro Miami-Dade-
Mainland Monroe-Coastal Palm Beach-Coastal Broward-Coastal Miami-
Dade-Far South Miami-Dade-
Coastal waters from Chokoloskee to Bonita Beach FL out 20 NM-
Coastal waters from East Cape Sable to Chokoloskee FL out 20 NM-
Waters from Chokoloskee to Bonita Beach FL from 20 to 60 NM-
346 PM EDT Sun Jul 30 2017

...PERIODS OF STORMS WITH LOCALLY HEAVY RAIN NEXT COUPLE OF DAYS...
...INCREASING RISK OF RIP CURRENTS NAPLES COAST...
...STRONG GUSTY WINDS ALSO WITH HEAVIEST STORMS...

This hazardous weather outlook is for South Florida.

.DAY ONE...THIS AFTERNOON AND TONIGHT

Thunderstorms: Scattered to numerous thunderstorms are expected
through tonight over all of South Florida and the adjacent waters.
The most numerous thunderstorms are expected near and north of
Alligator Alley. Frequent lightning strikes, strong gusty winds, and
heavy rain are the primary threats.

Flooding: Thunderstorms may produce periods of locally heavy
rainfall, which may cause flooding of roadways and areas of poor
drainage.

Wind: Strong thunderstorms will be capable of producing wind gusts
in excess of 40 to 45 mph.

Rip Currents: There is a moderate risk of rip currents along the
Naples beaches for the rest of today with the risk increasing by
Monday. Heed the advise of the beach patrol.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

Periods of rain and thunderstorms are forecast over South Florida
Monday and Tuesday. Locally excessive rainfall is possible, with
the potential for flooding of roads and poor drainage areas. There
is a slight threat a few locations may receive enough flooding to
temporarily close roadways. Frequent lightning will also be a threat.

Secondary concerns for Monday include strong gusty winds and isolated
tornadoes.

From Wednesday to Saturday, Daytime and evening thunderstorms will be
possible over South Florida, with nighttime thunderstorms over the
adjacent waters. Lightning and brief heavy rain are the primary
hazards.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated, however individual spotters
are encouraged to report flooding and any wind damage to the
National Weather Service forecast office in Miami.

For more information...visit the National Weather Service in
Miami website at www.weather.gov/miami.

In the hours before

Special weather statement, Jul 30, 6:53 PM EDT, 1 hour 55 minutes before
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Local storm report, Jul 30, 7:53 PM EDT, 55 minutes before
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Local storm report, Jul 30, 7:56 PM EDT, 52 minutes before
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Local storm report, Jul 30, 8:10 PM EDT, 38 minutes before
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Special weather statement, Jul 30, 8:41 PM EDT, 7 minutes before
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Special weather statement, Jul 30, 8:48 PM EDT, 0 minutes before
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The office that day

Everything else NWS Miami, FL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 30, 8:25 PM EDTSpecial Marine WarningMFL95 min
Jul 30, 8:31 PM EDTSpecial Marine WarningMFL89 min
Jul 30, 8:41 PM EDTSpecial Weather StatementMFLMonroe49 min
Jul 31, 3:55 AM EDTSmall Craft AdvisoryMFL30 hr
Jul 31, 5:37 AM EDTFlood WatchMFLCollier, Glades, Hendry12 hr
Jul 31, 5:38 AM EDTSpecial Weather StatementMFLCollier37 min
Jul 31, 5:39 AM EDTSpecial Marine WarningMFL36 min
Jul 31, 5:49 AM EDTSpecial Weather StatementMFLHendry41 min
Jul 31, 6:28 AM EDTSpecial Marine WarningMFL32 min
Jul 31, 6:59 AM EDTSpecial Weather StatementMFLCollier31 min
Jul 31, 7:03 AM EDTSpecial Marine WarningMFL27 min
Jul 31, 7:07 AM EDTSpecial Weather StatementMFLCollier38 min
Jul 31, 7:09 AM EDTSpecial Weather StatementMFLPalm Beach36 min
Jul 31, 7:30 AM EDTSpecial Marine WarningMFL30 min
Jul 31, 7:41 AM EDTSpecial Marine WarningMFL64 min
Jul 31, 7:43 AM EDTSpecial Weather StatementMFLPalm Beach47 min
Jul 31, 8:03 AM EDTSpecial Weather StatementMFLCollier42 min
Jul 31, 9:00 AM EDTSpecial Marine WarningMFL45 min
Jul 31, 9:27 AM EDTSpecial Marine WarningMFL33 min
Jul 31, 9:37 AM EDTAreal Flood AdvisoryMFLCollier113 min
Jul 31, 10:15 AM EDTSpecial Marine WarningMFL45 min
Jul 31, 10:49 AM EDTSpecial Weather StatementMFLCollier56 min
Jul 31, 11:00 AM EDTAreal Flood AdvisoryMFLCollier3 hr
Jul 31, 11:21 AM EDTSpecial Marine WarningMFL39 min
Jul 31, 11:21 AM EDTSpecial Marine WarningMFL24 min
Jul 31, 11:23 AM EDTSpecial Weather StatementMFLCollier52 min
Jul 31, 11:26 AM EDTSpecial Marine WarningMFL34 min
Jul 31, 11:30 AM EDTSpecial Weather StatementMFLMiami-Dade45 min
Jul 31, 11:50 AM EDTSpecial Marine WarningMFL25 min
Jul 31, 11:56 AM EDTSpecial Marine WarningMFL64 min
Jul 31, 12:00 PM EDTSpecial Marine WarningMFL45 min
Jul 31, 12:03 PM EDTSpecial Weather StatementMFLCollier57 min
Jul 31, 12:09 PM EDTSpecial Marine WarningMFL66 min
Jul 31, 12:17 PM EDTSpecial Weather StatementMFLMiami-Dade28 min
Jul 31, 12:45 PM EDTSpecial Marine WarningMFL60 min
Jul 31, 1:05 PM EDTSpecial Weather StatementMFLCollier40 min
Jul 31, 1:38 PM EDTSpecial Marine WarningMFL67 min
Jul 31, 2:02 PM EDTAreal Flood AdvisoryMFLCollier3 hr
Jul 31, 2:37 PM EDTSpecial Marine WarningMFL83 min
Jul 31, 6:25 PM EDTSpecial Weather StatementMFLGlades50 min
Jul 31, 6:41 PM EDTSpecial Marine WarningMFL64 min
Jul 31, 7:39 PM EDTSpecial Marine WarningMFL66 min

Nearby

Special Weather Statements in Florida, 2017Every special weather statement in 2017

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.