Alert archive / Florida / Special Weather Statements in 2020

Special Weather Statement, NWS Miami, FL

August 20, 2020Martin County, Florida

NWS Miami, FL issued this special weather statement at Aug 20, 2020, 2:48 PM EDT for Martin County, Florida. It was in force for 42 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
Aug 20, 2020, 2:48 PM EDT (18:48 UTC)
Expired
Aug 20, 2020, 3:30 PM EDT
In force
42 min
Issued by
NWS Miami, FL

County Martin County, FL

The radar

The Melbourne radar (KMLB), 132 km from the middle of the area, began a volume at 18:48 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 127 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 2020-08-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2702 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 2020-08-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 32 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
2702 J/kg
Mixed-layer CIN
-9 J/kg
Mixed-layer LCL
861 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
32 m²/s²
0-3 km storm-relative helicity
68 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.6

Open this sounding in Storm Lab

The text

As transmitted.

190 
WWUS82 KMFL 201848
SPSMFL

Special Weather Statement
National Weather Service Miami FL
248 PM EDT Thu Aug 20 2020
 
FLZ067-201930-
Inland Palm Beach County FL-
248 PM EDT Thu Aug 20 2020

...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL PALM BEACH COUNTY
UNTIL 330 PM EDT...

* At 248 PM EDT, National Weather Service meteorologists were
  tracking a strong thunderstorm over Canal Point, moving north at 10
  mph.

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

* Locations impacted include...
  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.

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 2696 8061 2696 8042 2677 8045 2679 8065
      2690 8072 2692 8070 2698 8069 2702 8064
      2702 8063
TIME...MOT...LOC 1848Z 178DEG 10KT 2684 8060 

$$

HVN

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 20, 7:20 AM EDTSpecial Weather StatementMFLMiami-Dade55 min
Aug 20, 12:37 PM EDTSpecial Weather StatementMFLMiami-Dade53 min
Aug 20, 1:32 PM EDTSpecial Weather StatementMFLHendry43 min
Aug 20, 1:38 PM EDTSpecial Weather StatementMFLBroward52 min
Aug 20, 1:40 PM EDTSpecial Weather StatementMFLMiami-Dade50 min
Aug 20, 1:49 PM EDTSpecial Marine WarningMFL41 min
Aug 20, 1:52 PM EDTSpecial Weather StatementMFLGlades38 min
Aug 20, 2:20 PM EDTSpecial Weather StatementMFLMonroe55 min
Aug 20, 2:25 PM EDTSpecial Marine WarningMFL35 min
Aug 20, 2:26 PM EDTSpecial Weather StatementMFLGlades49 min
Aug 20, 2:35 PM EDTSpecial Weather StatementMFLBroward40 min
Aug 20, 2:54 PM EDTSpecial Marine WarningMFL36 min
Aug 20, 3:07 PM EDTSpecial Weather StatementMFLMonroe38 min
Aug 20, 3:35 PM EDTSpecial Weather StatementMFLMartin40 min
Aug 20, 5:07 PM EDTSpecial Weather StatementMFLGlades38 min
Aug 20, 5:31 PM EDTSpecial Weather StatementMFLGlades44 min
Aug 20, 5:36 PM EDTSpecial Weather StatementMFLCollier39 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.