Alert archive / Florida / Special Weather Statements in 2020

Special Weather Statement, NWS Melbourne, FL

August 30, 2020Osceola County, Florida

NWS Melbourne, FL issued this special weather statement at Aug 30, 2020, 1:08 PM EDT for Osceola County, Florida. It was in force for 37 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 30, 2020, 1:08 PM EDT (17:08 UTC)
Expired
Aug 30, 2020, 1:45 PM EDT
In force
37 min
Issued by
NWS Melbourne, FL

County Osceola County, FL

The radar

The Melbourne radar (KMLB), 34 km from the middle of the area, began a volume at 17:10 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, 5.1 hours before the alert went out and 55 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 2020-08-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 635 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, Cape Canaveral, FL at 12:00Z on 2020-08-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 66 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
635 J/kg
Mixed-layer CIN
-61 J/kg
Mixed-layer LCL
968 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
66 m²/s²
0-3 km storm-relative helicity
60 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

594 
WWUS82 KMLB 301708
SPSMLB

Special Weather Statement
National Weather Service Melbourne FL
108 PM EDT Sun Aug 30 2020
 
FLZ047-053-301745-
Southern Brevard County FL-Osceola FL-
108 PM EDT Sun Aug 30 2020

...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL BREVARD AND
NORTHEASTERN OSCEOLA COUNTIES UNTIL 145 PM EDT...

At 108 PM EDT, Doppler radar was tracking a strong thunderstorm over
Holopaw, moving east at 25 mph.

Winds in excess of 40 mph will be possible with this storm.

Locations impacted include...
Melbourne, Rockledge, Camp Holly Fish Camp, Holopaw and West
Melbourne.

LAT...LON 2809 8120 2835 8119 2834 8086 2834 8073
      2807 8070
TIME...MOT...LOC 1708Z 264DEG 22KT 2817 8106 

$$

Combs

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 29, 9:05 PM EDTSpecial Weather StatementMLBMartin55 min
Aug 30, 12:24 PM EDTSpecial Marine WarningMLB96 min
Aug 30, 1:12 PM EDTSpecial Marine WarningMLB93 min
Aug 30, 1:31 PM EDTSpecial Weather StatementMLBBrevard44 min
Aug 30, 1:40 PM EDTSpecial Weather StatementMLBBrevard50 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.