Alert archive / Florida / Special Weather Statements in 2020

Special Weather Statement, NWS Miami, FL

July 17, 2020Palm Beach County, Florida

NWS Miami, FL issued this special weather statement at Jul 17, 2020, 3:49 PM EDT for Palm Beach 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
Jul 17, 2020, 3:49 PM EDT (19:49 UTC)
Expired
Jul 17, 2020, 4:30 PM EDT
In force
41 min
Issued by
NWS Miami, FL

County Palm Beach County, FL

The radar

The Miami radar (KAMX), 135 km from the middle of the area, began a volume at 19:51 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, 7.8 hours before the alert went out and 110 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 2020-07-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1564 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 2020-07-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 76 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
1564 J/kg
Mixed-layer CIN
-20 J/kg
Mixed-layer LCL
844 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
76 m²/s²
0-3 km storm-relative helicity
69 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 Jul 17, 1:58 PM EDT, 1 hour 51 minutes earlier.

Area forecast discussion, Jul 17, 1:58 PM EDT, 1 hour 51 minutes before
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Hazardous weather outlook, Jul 17, 4:16 AM EDT, 11 hours 33 minutes before
Hazardous Weather Outlook for South Florida
National Weather Service Miami FL
416 AM EDT Fri Jul 17 2020

AMZ610-630-650-651-670-671-FLZ063-066>075-168-172>174-GMZ656-657-676-
172030-
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-
416 AM EDT Fri Jul 17 2020

...THUNDERSTORMS POSSIBLE ACROSS SOUTH FLORIDA....
...MODERATE RISK OF RIP CURRENTS FOR THE ATLANTIC BEACHES...

This hazardous weather outlook is for South Florida.

.DAY ONE...TODAY AND TONIGHT

Thunderstorms: Thunderstorms are possible today across South Florida.
The main hazards will be lightning and gusty wind.

Wind: Thunderstorm wind gusts of 45 to 55 mph are possible. Also,
wind gusts over the maritime areas of South Florida may see wind
gusts exceed 20kts with showers and thunderstorms.

Waterspouts: Waterspouts are possible with any showers or storms over
South Florida waters.

Rip Currents: A moderate risk of rip currents along the Atlantic
coast.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

The chances of showers and thunderstorms will continue to increase
into the upcoming weekend as tropical moisture starts to move across
the region. Thunderstorms may bring frequent lightning, gusty wind,
and heavy downpours. With the increase in moisture into the upcoming
weekend, the potential for flooding will increase across the urban
and poor drainage areas, possibly into next week.

The enhanced risk of rip currents may continue well into next week
for the Atlantic beaches.

.SPOTTER INFORMATION STATEMENT...

Widespread spotter activation is not anticipated at this time.

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

In the hours before

Special weather statement, Jul 17, 12:32 PM EDT, 3 hours 17 minutes before
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Special weather statement, Jul 17, 1:06 PM EDT, 2 hours 43 minutes before
Special Weather Statement
National Weather Service Miami FL
106 PM EDT Fri Jul 17 2020

FLZ066-067-070-071-171800-
Inland Broward County FL-Hendry FL-Inland Collier County FL-
Inland Palm Beach County FL-
106 PM EDT Fri Jul 17 2020

...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL COLLIER...SOUTHERN
HENDRY...NORTHERN BROWARD AND SOUTHWESTERN PALM BEACH COUNTIES UNTIL
200 PM EDT...

* At 105 PM EDT, National Weather Service meteorologists were
  tracking a strong thunderstorm 7 miles northeast of Hendry
  Correctional, or 17 miles south of Montura, moving west at 20 mph.

* Winds in excess of 45 mph possible with this storm.

* Locations impacted include...
  Ave Maria, Immokalee, Hendry Correctional, Felda, Big Cypress
  Seminole Reservation, Rotenberger Wildlife Refuge, Big Corkscrew
  Island, Sunniland, Bunker Hill and Lake Trafford.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To report severe weather, contact your nearest law enforcement
agency. You can also share your report with NWS Miami on Facebook and
Twitter.

&&

LAT...LON 2647 8082 2627 8081 2626 8151 2640 8157
      2656 8148
TIME...MOT...LOC 1705Z 089DEG 18KT 2640 8115

SPM
Special weather statement, Jul 17, 1:57 PM EDT, 1 hour 52 minutes before
Special Weather Statement
National Weather Service Miami FL
157 PM EDT Fri Jul 17 2020

FLZ066-070-171915-
Hendry FL-Inland Collier County FL-
157 PM EDT Fri Jul 17 2020

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN COLLIER AND CENTRAL
HENDRY COUNTIES UNTIL 315 PM EDT...

* At 157 PM EDT, National Weather Service meteorologists were
  tracking a strong thunderstorm 10 miles south of Devils Garden, or
  13 miles south of Montura, moving west at 20 mph.

* Small hail and winds in excess of 45 mph possible with this storm.

* Locations impacted include...
  Ave Maria, Immokalee, Hendry Correctional, Felda, Big Corkscrew
  Island, Corkscrew Swamp Sanctuary, Keri, Bunker Hill and Lake
  Trafford.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To report severe weather, contact your nearest law enforcement
agency. You can also share your report with NWS Miami on Facebook and
Twitter.

&&

LAT...LON 2633 8166 2642 8166 2642 8156 2667 8157
      2658 8095 2651 8090 2628 8098 2632 8169
TIME...MOT...LOC 1757Z 093DEG 18KT 2645 8113

SPM
Special weather statement, Jul 17, 3:49 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service Miami FL
349 PM EDT Fri Jul 17 2020

FLZ067-068-168-172030-
Coastal Palm Beach County FL-Inland Palm Beach County FL-
Metro Palm Beach County FL-
349 PM EDT Fri Jul 17 2020

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN PALM BEACH COUNTY
UNTIL 430 PM EDT...

* At 349 PM EDT, National Weather Service meteorologists were
  tracking strong thunderstorms along a line extending from near
  Jupiter to Downtown West Palm Beach. Movement was west at 25 mph.

* Funnel clouds possible with these storms.

* Locations impacted include...
  West Palm Beach, Wellington, Jupiter, Palm Beach Gardens, Lake
  Worth, Riviera Beach, Palm Beach, Tequesta, Juno Beach, Greenacres,
  Royal Palm Beach, Palm Springs, North Palm Beach, Lantana, Lake
  Park, Atlantis, Haverhill, Cloud Lake, Palm Beach International
  Airport and Port Of Palm Beach.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Funnel clouds occasionally touch down and produce tornadoes or
waterspouts. Move indoors and stay away from windows.

To report severe weather, contact your nearest law enforcement
agency. You can also share your report with NWS Miami on Facebook and
Twitter.

&&

LAT...LON 2658 8003 2658 8024 2696 8027 2696 8014
      2697 8014 2697 8003
TIME...MOT...LOC 1949Z 092DEG 20KT 2691 8003 2673 8004

Weinman

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 17, 12:32 PM EDTSpecial Weather StatementMFLHendry43 min
Jul 17, 1:06 PM EDTSpecial Weather StatementMFLHendry54 min
Jul 17, 1:57 PM EDTSpecial Weather StatementMFLHendry78 min
Jul 17, 2:33 PM EDTSpecial Marine WarningMFL57 min
Jul 17, 3:26 PM EDTSpecial Marine WarningMFL64 min
Jul 17, 3:48 PM EDTSpecial Marine WarningMFL25 min
Jul 17, 4:30 PM EDTSpecial Marine WarningMFL30 min
Jul 17, 4:32 PM EDTSpecial Weather StatementMFLBroward43 min
Jul 17, 4:39 PM EDTSpecial Marine WarningMFL51 min
Jul 17, 5:13 PM EDTSpecial Weather StatementMFLBroward47 min

Nearby

Special Weather Statements in Florida, 2020Every special weather statement in 2020

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.