Alert archive / Florida / Special Weather Statements in 2017

Special Weather Statement, NWS Miami, FL

May 26, 2017Miami-Dade County, Florida

NWS Miami, FL issued this special weather statement at May 26, 2017, 4:39 PM EDT for Miami-Dade County, Florida. It was in force for 51 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
May 26, 2017, 4:39 PM EDT (20:39 UTC)
Expired
May 26, 2017, 5:30 PM EDT
In force
51 min
Issued by
NWS Miami, FL

County Miami-Dade County, FL

The radar

The Miami radar (KAMX), 24 km from the middle of the area, began a volume at 20:40 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

Tampa Bay, FL (KTBW), launched 12:00Z, 8.7 hours before the alert went out and 306 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, Tampa Bay, FL at 12:00Z on 2017-05-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Tampa Bay, FL at 12:00Z on 2017-05-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 82 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1233 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
82 m²/s²
0-3 km storm-relative helicity
29 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 May 26, 3:51 PM EDT, 48 minutes earlier.

Area forecast discussion, May 26, 3:51 PM EDT, 48 minutes before
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Hazardous weather outlook, May 26, 3:57 PM EDT, 42 minutes before
Hazardous Weather Outlook for South Florida
National Weather Service Miami FL
357 PM EDT Fri May 26 2017

AMZ610-630-650-651-670-671-FLZ063-066>075-168-172>174-GMZ656-657-676-
270800-
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-
357 PM EDT Fri May 26 2017

...ISOLATED TO SCATTERED STORMS POSSIBLE SOUTHERN AREAS THIS
AFTERNOON...

This hazardous weather outlook is for South Florida.

.DAY ONE...THIS AFTERNOON AND TONIGHT

Thunderstorms: Isolated to scattered thunderstorms are expected over
the southern areas of South Florida through this evening, with the
best coverage over the southern interior areas. The primary threats
will be lightning.

No other hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

The weather will remain mostly dry this Memorial Day weekend into
early next week. Heat index values are forecast to be near or above
100 degrees for much of South Florida.

A typical summer weather pattern of thunderstorms returns to South
Florida for the middle to end of next week. The primary hazards from
the thunderstorms will be lightning and locally heavy rainfall.

No other hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

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

In the hours before

Special weather statement, May 26, 11:52 AM EDT, 4 hours 47 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Miami FL
1152 AM EDT FRI MAY 26 2017

FLZ173-174-261615-
Far South Miami-Dade County FL-Coastal Miami Dade County FL-
1152 AM EDT FRI MAY 26 2017

...Significant Weather Advisory for the development of funnel clouds
for south central Miami-Dade County Until 1215 PM EDT...

* At 1151 AM EDT...Doppler radar was tracking a shower capable of
  producing a funnel cloud along U.S. Highway 1 between Florida
  City and the Key Largo Bridge, moving east at 15 mph.

* LOCATIONS IMPACTED INCLUDE...
  Everglades National Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

LAT...LON 2523 8052 2536 8050 2537 8036 2532 8036
      2530 8039 2529 8039 2529 8040 2527 8040
      2528 8041 2526 8042 2526 8043 2525 8043
      2526 8044 2524 8043 2525 8044 2525 8046
      2523 8048 2524 8048 2520 8050
TIME...MOT...LOC 1551Z 265DEG 12KT 2530 8045

KScharf
Special weather statement, May 26, 4:39 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
May 26, 11:52 AM EDTSpecial Weather StatementMFLMiami-Dade23 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.