Alert archive / Florida / Special Weather Statements in 2017

Special Weather Statement, NWS Miami, FL

March 23, 2017Glades County, Florida

NWS Miami, FL issued this special weather statement at Mar 23, 2017, 2:49 PM EDT for Glades County, Florida. It was in force for 41 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
Mar 23, 2017, 2:49 PM EDT (18:49 UTC)
Expired
Mar 23, 2017, 3:30 PM EDT
In force
41 min
Issued by
NWS Miami, FL

County Glades County, FL

The radar

The Melbourne radar (KMLB), 151 km from the middle of the area, began a volume at 18:50 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, 6.8 hours before the alert went out and 141 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 12:00Z on 2017-03-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 102 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 12:00Z on 2017-03-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -31 square meters per square second.1939Sfc1 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
102 J/kg
Mixed-layer CIN
-238 J/kg
Mixed-layer LCL
1228 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
-31 m²/s²
0-3 km storm-relative helicity
-7 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 Mar 23, 1:33 PM EDT, 1 hour 16 minutes earlier.

Area forecast discussion, Mar 23, 1:33 PM EDT, 1 hour 16 minutes before
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Hazardous weather outlook, Mar 23, 9:33 AM EDT, 5 hours 16 minutes before
Hazardous Weather Outlook for South Florida
National Weather Service Miami FL
933 AM EDT Thu Mar 23 2017

AMZ610-630-650-651-670-671-FLZ063-066>075-168-172>174-GMZ656-657-676-
240145-
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-
933 AM EDT Thu Mar 23 2017

...Strong thunderstorms are possible over South Florida today...
...High Risk of Rip Currents along the Atlantic beaches...
...Deteriorating Marine Conditions will persist into the weekend...

This hazardous weather outlook is for South Florida.

.DAY ONE...TODAY AND TONIGHT

Rip currents: There is a High Risk of Rip Currents for the Atlantic
beaches today and tonight.

Thunderstorms: Afternoon and evening thunderstorms are likely today
with the threat of strong winds, hail, locally heavy rainfall, and
dangerous cloud-to-ground lightning. Isolated severe thunderstorms
cannot be ruled out today.

Wind: Sustained wind speeds over the local waters of 20 to 25 knots
are expected by this afternoon. Any thunderstorms that develop today
could produce strong wind gusts of 45 to 55 mph.

Hail: The strongest thunderstorms today could produce hail up to the
size of a quarter.

Waves: Hazardous marine conditions are possible across the local waters
beginning today as seas build to 9 to 11 feet in the Atlantic ahead
of an approaching frontal boundary.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

A high risk of Rip Currents is expected for the Atlantic beaches through
the weekend.

Hazardous marine conditions are expected to persist into the weekend.

.SPOTTER INFORMATION STATEMENT...

Widespread spotter activation is not anticipated, however individual
spotters are encouraged to report high wind, hail 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, Mar 23, 9:44 AM EDT, 5 hours 5 minutes before
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Special weather statement, Mar 23, 2:49 PM EDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Miami FL
249 PM EDT THU MAR 23 2017

FLZ063-066-067-231930-
Hendry FL-Inland Palm Beach County FL-Glades FL-
249 PM EDT THU MAR 23 2017

...Significant Weather Advisory for the development of funnel clouds
and up to nickel sized hail for northeastern Hendry and southwestern
Glades Counties Until 330 PM EDT...

* At 247 PM EDT...Doppler radar was tracking a strong thunderstorm
  with rotation, Capable of producing a funnel cloud near Lakeport,
  moving south at 10 mph.

* In addition, up to nickel sized hail is possible. Seek shelter in a
  safe building until the storm passes.

* LOCATIONS IMPACTED INCLUDE...
  Clewiston, Labelle, Moore Haven, Lakeport, Montura, Palmdale, Lake
  Harbor, Port La Belle, Devils Garden, Ortona, Harlem and Lake
  Hicpochee.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to street flooding. Do not drive your vehicle through flooded
roadways.

This activity was also developing in an environment favorable for the
formation of funnel clouds. Stay tuned to NOAA weather radio and
local media for additional updates and possible warnings.

Residents should remain on the alert for additional statements and
possible warnings.

&&

LAT...LON 2702 8132 2699 8105 2689 8109 2671 8081
      2645 8092 2673 8149
TIME...MOT...LOC 1847Z 001DEG 9KT 2692 8116

AR

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 23, 3:56 AM EDTRip Current StatementMFLBroward, Miami-Dade, Palm Beach4 days
Mar 23, 4:03 AM EDTSmall Craft AdvisoryMFL61 hr
Mar 23, 9:28 AM EDTSpecial Marine WarningMFL62 min
Mar 23, 9:44 AM EDTSpecial Weather StatementMFLPalm Beach46 min
Mar 23, 10:45 AM EDTSpecial Marine WarningMFL45 min
Mar 23, 12:00 PM EDTSpecial Marine WarningMFL45 min
Mar 23, 2:20 PM EDTSpecial Marine WarningMFL25 min
Mar 23, 3:27 PM EDTSpecial Weather StatementMFLHendry63 min
Mar 23, 3:50 PM EDTSevere Thunderstorm WarningMFLPalm Beach25 min
Mar 23, 4:01 PM EDTSpecial Weather StatementMFLCollier44 min
Mar 23, 4:11 PM EDTSevere Thunderstorm WarningMFLBroward, Collier, Hendry, Palm Beach
Mar 23, 4:18 PM EDTSevere Thunderstorm WarningMFLCollier, Hendry27 min
Mar 23, 4:23 PM EDTSpecial Marine WarningMFL2 hr
Mar 23, 4:35 PM EDTSpecial Marine WarningMFL85 min
Mar 23, 4:39 PM EDTSpecial Weather StatementMFLCollier36 min
Mar 23, 4:44 PM EDTSpecial Weather StatementMFLCollier61 min
Mar 23, 4:53 PM EDTSpecial Weather StatementMFLMonroe52 min
Mar 23, 5:23 PM EDTSpecial Weather StatementMFLPalm Beach37 min
Mar 23, 5:34 PM EDTSpecial Marine WarningMFL26 min
Mar 23, 6:25 PM EDTSpecial Weather StatementMFLBroward35 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.