Alert archive / Florida / Special Weather Statements in 2021

Special Weather Statement, NWS Melbourne, FL

August 7, 2021Brevard County, Florida

NWS Melbourne, FL issued this special weather statement at Aug 7, 2021, 7:23 PM EDT for Brevard 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 7, 2021, 7:23 PM EDT (23:23 UTC)
Expired
Aug 7, 2021, 8:00 PM EDT
In force
37 min
Issued by
NWS Melbourne, FL
Hail
0.00 in
Wind
40

County Brevard County, FL

The radar

The Melbourne radar (KMLB), 5 km from the middle of the area, began a volume at 23:22 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, 11.4 hours before the alert went out and 39 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 2021-08-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 725 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 2021-08-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 46 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
725 J/kg
Mixed-layer CIN
-65 J/kg
Mixed-layer LCL
1093 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
46 m²/s²
0-3 km storm-relative helicity
59 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

158 
WWUS82 KMLB 072323
SPSMLB

Special Weather Statement
National Weather Service Melbourne FL
723 PM EDT Sat Aug 7 2021
 
FLZ047-080000-
Southern Brevard County FL-
723 PM EDT Sat Aug 7 2021

...A strong thunderstorm will impact portions of central Brevard
County through 800 PM EDT...

At 723 PM EDT, Doppler radar was tracking a strong thunderstorm near
Suntree, or near Camp Holly Fish Camp, moving east at 25 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around 
         unsecured objects.

Locations impacted include...
Melbourne, Satellite Beach, Patrick Air Force Base, Merritt Island
and West Melbourne.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 2809 8081 2823 8082 2828 8057 2813 8054
      2811 8053
TIME...MOT...LOC 2323Z 259DEG 20KT 2816 8073 

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

$$

Sedlock

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 7, 4:18 PM EDTSpecial Weather StatementMLBOrange42 min
Aug 7, 5:17 PM EDTSpecial Weather StatementMLBLake43 min
Aug 7, 5:51 PM EDTSpecial Weather StatementMLBVolusia24 min
Aug 7, 6:30 PM EDTSpecial Marine WarningMLB2 hr
Aug 7, 6:41 PM EDTSpecial Weather StatementMLBBrevard49 min
Aug 7, 6:45 PM EDTSpecial Weather StatementMLBOsceola45 min

Nearby

Special Weather Statements in Florida, 2021Every special weather statement in 2021

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.