Alert archive / Florida / Special Weather Statements in 2019

Special Weather Statement, NWS Miami, FL

October 20, 2019Monroe County, Florida

NWS Miami, FL issued this special weather statement at Oct 20, 2019, 3:22 AM EDT for Monroe County, Florida. It was in force for 38 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
Oct 20, 2019, 3:22 AM EDT (07:22 UTC)
Expired
Oct 20, 2019, 4:00 AM EDT
In force
38 min
Issued by
NWS Miami, FL

County Monroe County, FL

The radar

The Miami radar (KAMX), 89 km from the middle of the area, began a volume at 07:22 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, 7.4 hours before the alert went out and 86 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 2019-10-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1793 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 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 2019-10-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 95 square meters per square second.193958Sfc1 km3 km6 km9 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
1793 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
835 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
95 m²/s²
0-3 km storm-relative helicity
132 m²/s²
Significant tornado parameter
0.5
Supercell composite
2.9

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 Oct 20, 3:20 AM EDT, 2 minutes earlier.

Area forecast discussion, Oct 20, 3:20 AM EDT, 2 minutes before
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Hazardous weather outlook, Oct 19, 4:27 PM EDT, 10 hours 55 minutes before
Hazardous Weather Outlook for South Florida
National Weather Service Miami FL
427 PM EDT Sat Oct 19 2019

AMZ610-630-650-651-670-671-FLZ063-066>075-168-172>174-GMZ656-657-676-
200830-
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-
427 PM EDT Sat Oct 19 2019

...Strong Thunderstorms Possible This Evening...
...Coastal Flood and High Risk of Rip Currents for Gulf Coast...

This hazardous weather outlook is for South Florida.

.DAY ONE...TONIGHT

Rip currents: A high risk of Rip Currents will exist along the Gulf
beaches.

Thunderstorms: Lightning, locally heavy rainfall, and gusty winds
are primary hazards with thunderstorms.

Tornadoes: Stronger thunderstorms will be capable of producing
funnel clouds or isolated weak tornadoes.

Waterspouts: Showers and thunderstorms could produce several
waterspouts tonight over the coastal and lake waters.

Wind: Stronger thunderstorms could produce wind gusts capable of
causing isolated wind damage. Sustained winds of 20 to 25 knots over
the Gulf of Mexico will cause hazardous marine conditions. Reference
the Small Craft Advisory for the latest marine details.

Flooding: Training showers and thunderstorms could cause excessive
rainfall capable of producing minor flooding on roads and low-lying,
poorly drained areas.

Visibility:  There could be some patchy fog across Southwest Florida
and inland South Florida tonight, particularly in areas that receive
rainfall today.

Waves: 7 to 10 foot seas in the Gulf of Mexico through early Sunday
morning. Reference the Small Craft Advisory for the latest details.

Coastal Flooding: Surf heights along the Gulf beaches could reach
around 5 feet today. Sensitive and low-lying locations along the
Gulf coast may experience minor flooding.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

Thunderstorms are possible each day through Wednesday.

The risk of Rip Currents will become elevated along the Gulf and
some Atlantic beaches this weekend into possibly early next week.

.SPOTTER INFORMATION STATEMENT...

Widespread spotter activation is not anticipated, however individual
spotters are encouraged to report high wind, funnel clouds,
waterspouts, and flooding 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, Oct 20, 12:46 AM EDT, 2 hours 36 minutes before
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Special weather statement, Oct 20, 12:50 AM EDT, 2 hours 32 minutes before
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Special weather statement, Oct 20, 1:16 AM EDT, 2 hours 6 minutes before
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Special weather statement, Oct 20, 2:18 AM EDT, 1 hour 4 minutes before
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Special weather statement, Oct 20, 2:46 AM EDT, 36 minutes before
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Special weather statement, Oct 20, 3:22 AM EDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Oct 19, 11:31 PM EDTSpecial Weather StatementMFLHendry44 min
Oct 19, 11:43 PM EDTSevere Thunderstorm WarningMFLBroward, Hendry, Palm Beach62 min
Oct 19, 11:46 PM EDTSpecial Weather StatementMFLPalm Beach44 min
Oct 19, 11:46 PM EDTTornado WarningMFLBroward, Hendry, Palm Beach44 min
Oct 19, 11:53 PM EDTSpecial Marine WarningMFL2 hr
Oct 20, 12:03 AM EDTSpecial Weather StatementMFLCollier42 min
Oct 20, 12:13 AM EDTSpecial Weather StatementMFLHendry47 min
Oct 20, 12:13 AM EDTSevere Thunderstorm WarningMFLPalm Beach47 min
Oct 20, 12:40 AM EDTSpecial Weather StatementMFLPalm Beach50 min
Oct 20, 12:46 AM EDTSpecial Weather StatementMFLCollier44 min
Oct 20, 12:50 AM EDTSpecial Weather StatementMFLHendry40 min
Oct 20, 1:16 AM EDTSpecial Weather StatementMFLPalm Beach44 min
Oct 20, 1:22 AM EDTSevere Thunderstorm WarningMFLCollier83 min
Oct 20, 1:59 AM EDTSpecial Marine WarningMFL2 hr
Oct 20, 2:18 AM EDTSpecial Weather StatementMFLCollier, Hendry72 min
Oct 20, 2:43 AM EDTSpecial Marine WarningMFL32 min
Oct 20, 2:46 AM EDTSpecial Weather StatementMFLCollier44 min
Oct 20, 4:00 AM EDTSpecial Weather StatementMFLBroward60 min
Oct 20, 4:51 AM EDTSpecial Weather StatementMFLPalm Beach39 min
Oct 20, 5:28 AM EDTSpecial Weather StatementMFLPalm Beach62 min
Oct 20, 6:22 AM EDTSpecial Weather StatementMFLCollier38 min
Oct 20, 6:57 AM EDTSpecial Weather StatementMFLCollier48 min
Oct 20, 7:23 AM EDTSpecial Marine WarningMFL37 min
Oct 20, 7:39 AM EDTSpecial Weather StatementMFLCollier, Hendry66 min
Oct 20, 8:46 AM EDTSpecial Weather StatementMFLCollier, Hendry44 min
Oct 20, 10:32 AM EDTSpecial Weather StatementMFLPalm Beach43 min
Oct 20, 11:46 AM EDTSpecial Weather StatementMFLCollier44 min
Oct 20, 1:14 PM EDTSpecial Weather StatementMFLHendry46 min

Nearby

Special Weather Statements in Florida, 2019Every special weather statement in 2019

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.