Alert archive / Florida / Special Weather Statements in 2021

Special Weather Statement, NWS Melbourne, FL

August 3, 2021Volusia County, Florida

NWS Melbourne, FL issued this special weather statement at Aug 3, 2021, 8:26 PM EDT for Volusia County, Florida. It was in force for 49 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 3, 2021, 8:26 PM EDT (00:26 UTC)
Expired: Aug 3, 2021, 9:15 PM EDT
In force: 49 min
Issued by: NWS Melbourne, FL
Hail: 0.00 in
Wind: 40

County Volusia County, FL

The radar

The Melbourne radar (KMLB), 118 km from the middle of the area, began a volume at 00:28 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 00:00Z, 0.4 hours before the alert went out and 90 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 43 J/kg
Mixed-layer CIN: -50 J/kg
Mixed-layer LCL: 776 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 170 m²/s²
0-3 km storm-relative helicity: 194 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

As transmitted.

920 
WWUS82 KMLB 040026
SPSMLB

Special Weather Statement
National Weather Service Melbourne FL
826 PM EDT Tue Aug 3 2021
 
FLZ041-141-040115-
Coastal Volusia FL-Inland Volusia FL-
826 PM EDT Tue Aug 3 2021

...A strong thunderstorm will impact portions of central Volusia
County through 915 PM EDT...

At 825 PM EDT, Doppler radar was tracking a strong thunderstorm over
DeLeon Springs, moving east at 25 mph.

HAZARD...Winds in excess of 40 mph and funnel clouds.

SOURCE...Radar indicated.

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

Locations impacted include...
Daytona Beach, Port Orange, DeLand, New Smyrna Beach and South
Daytona.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

Conditions are favorable for the development of weak, brief funnel
clouds. These types of funnel clouds are harmless, but on rare
occasions they can briefly touch down, producing wind gusts over 50
mph. If a funnel cloud is spotted move indoors and report your
sighting to the National Weather Service.

&&

LAT...LON 2909 8089 2900 8086 2903 8140 2918 8140
      2925 8098
TIME...MOT...LOC 0025Z 266DEG 20KT 2911 8135 

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

$$

Kelly

The office that day

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

Issued	Product	Office	Lasted
Aug 4, 10:51 AM EDT	Special Marine Warning	MLB	84 min
Aug 4, 11:24 AM EDT	Special Marine Warning	MLB	66 min
Aug 4, 12:06 PM EDT	Special Marine Warning	MLB	54 min

Nearby

Special Weather Statements in Florida, 2021 Every 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.