Alert archive / Florida / Special Weather Statements in 2018

Special Weather Statement, NWS Miami, FL

May 15, 2018Glades County, Florida

NWS Miami, FL issued this special weather statement at May 15, 2018, 3:25 PM EDT for Glades County, Florida. It was in force for 35 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 15, 2018, 3:25 PM EDT (19:25 UTC)
Expired
May 15, 2018, 4:00 PM EDT
In force
35 min
Issued by
NWS Miami, FL

County Glades County, FL

The radar

The Melbourne radar (KMLB), 121 km from the middle of the area, began a volume at 19:25 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

Cape Canaveral, FL (KXMR), launched 12:00Z, 7.4 hours before the alert went out and 163 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, Cape Canaveral, FL at 12:00Z on 2018-05-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1652 joules per kilogram.LCLEL10008507005003002001001 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, Cape Canaveral, FL at 12:00Z on 2018-05-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 131 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
1652 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
493 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
131 m²/s²
0-3 km storm-relative helicity
145 m²/s²
Significant tornado parameter
0.0
Supercell composite
4.8

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 15, 1:26 PM EDT, 1 hour 59 minutes earlier.

Area forecast discussion, May 15, 1:26 PM EDT, 1 hour 59 minutes before
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Hazardous weather outlook, May 15, 10:36 AM EDT, 4 hours 49 minutes before
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In the hours before

Special weather statement, May 15, 1:16 PM EDT, 2 hours 9 minutes before
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Special weather statement, May 15, 2:27 PM EDT, 58 minutes before
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Special weather statement, May 15, 2:33 PM EDT, 52 minutes before
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Special weather statement, May 15, 3:07 PM EDT, 18 minutes before
Special Weather Statement
National Weather Service Miami FL
307 PM EDT TUE MAY 15 2018

FLZ067-152015-
Inland Palm Beach County FL-
307 PM EDT TUE MAY 15 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN PALM BEACH COUNTY
UNTIL 415 PM EDT...

* At 307 PM EDT, Doppler radar was tracking a strong thunderstorm
  near Fremd Village-Padgett Island, or near Canal Point, moving
  north at 10 mph.

* Dime size hail and winds in excess of 45 mph will be possible with
  this storm.

* Locations impacted include...
  Belle Glade, Pahokee, Canal Point and Fremd Village-Padgett Island.

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 2696 8061 2696 8040 2661 8042 2657 8066
      2689 8072 2691 8070 2697 8069 2698 8062
TIME...MOT...LOC 1907Z 167DEG 9KT 2679 8055

JT
Special weather statement, May 15, 3:15 PM EDT, 10 minutes before
Special Weather Statement
National Weather Service Miami FL
315 PM EDT TUE MAY 15 2018

FLZ067-068-071-072-151945-
Inland Broward County-Metro Broward County-Inland Palm Beach
County-Metro Palm Beach County-
315 PM EDT TUE MAY 15 2018

...A STRONG THUNDERSTORM WILL AFFECT NORTH CENTRAL BROWARD AND SOUTH
CENTRAL PALM BEACH COUNTIES...

At 315 PM EDT, a strong thunderstorm was located over Parkland, or
near Coral Springs, moving northeast at 15 mph.

Winds in excess of 40 mph and dime size hail are possible with this
storm.

Locations impacted include...
Coral Springs, Boca Raton, Parkland, Mission Bay, Whisper Walk,
Hamptons At Boca Raton, Godfrey Road, Loxahatchee NWR, Ramblewood
East, South County Regional Park and Sandalfoot Cove.

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

LAT...LON 2627 8024 2630 8036 2645 8030 2640 8016
TIME...MOT...LOC 1915Z 219DEG 12KT 2633 8028

CF
Special weather statement, May 15, 3:25 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service Miami FL
325 PM EDT TUE MAY 15 2018

FLZ063-152000-
Glades FL-
325 PM EDT TUE MAY 15 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN GLADES COUNTY UNTIL
400 PM EDT...

* At 325 PM EDT, National Weather Service meteorologists were
  tracking a strong thunderstorm over Brighton Seminole Reservation,
  or near Lakeport, moving north at 15 mph.

* Small hail, excessive cloud-to-ground lightning, funnel clouds, and
  winds in excess of 45 mph will be possible with this storm.

* Locations impacted include...
  Lakeport and Brighton Seminole Reservation.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

These winds can down small tree limbs and branches, and blow around
unsecured small objects. Seek shelter in a safe building until the
storm passes.

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

Frequent cloud to ground lightning is occurring with this storm. If
you can hear thunder, you are close enough to be struck! Seek a safe
shelter inside a building or vehicle.

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 2699 8102 2697 8116 2712 8119 2712 8117
      2720 8117 2721 8107 2721 8097
TIME...MOT...LOC 1925Z 177DEG 13KT 2706 8106

AR

The office that day

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

IssuedProductOfficeCountiesLasted
May 15, 12:28 PM EDTSpecial Weather StatementMFLBroward32 min
May 15, 12:50 PM EDTSpecial Weather StatementMFLPalm Beach25 min
May 15, 1:08 PM EDTSpecial Weather StatementMFLMonroe37 min
May 15, 1:16 PM EDTSpecial Weather StatementMFLHendry29 min
May 15, 1:44 PM EDTAreal Flood AdvisoryMFLBroward2 hr
May 15, 2:27 PM EDTSpecial Weather StatementMFLGlades48 min
May 15, 2:33 PM EDTSpecial Weather StatementMFLBroward27 min
May 15, 3:07 PM EDTSpecial Weather StatementMFLPalm Beach68 min
May 15, 3:15 PM EDTSpecial Weather StatementMFLBroward30 min
May 15, 3:56 PM EDTSpecial Weather StatementMFLGlades19 min
May 15, 4:05 PM EDTSpecial Weather StatementMFLBroward40 min
May 15, 4:37 PM EDTSpecial Weather StatementMFLBroward38 min
May 15, 6:00 PM EDTSevere Thunderstorm WarningMFLBroward, Miami-Dade30 min
May 15, 6:12 PM EDTSpecial Weather StatementMFLMiami-Dade33 min
May 15, 6:28 PM EDTSpecial Weather StatementMFLBroward47 min
May 15, 6:58 PM EDTSpecial Weather StatementMFLMonroe47 min
May 15, 7:01 PM EDTSpecial Weather StatementMFLBroward44 min
May 15, 7:25 PM EDTSpecial Weather StatementMFLMiami-Dade35 min

Nearby

Special Weather Statements in Florida, 2018Every special weather statement 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.