Alert archive / Florida / Special Weather Statements in 2021

Special Weather Statement, NWS Melbourne, FL

August 8, 2021Indian River County, Florida

NWS Melbourne, FL issued this special weather statement at Aug 8, 2021, 4:11 PM EDT for Indian River County, Florida. It was in force for 34 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 8, 2021, 4:11 PM EDT (20:11 UTC)
Expired
Aug 8, 2021, 4:45 PM EDT
In force
34 min
Issued by
NWS Melbourne, FL
Hail
0.00 in
Wind
40

County Indian River County, FL

The radar

The Melbourne radar (KMLB), 69 km from the middle of the area, began a volume at 20:13 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, 8.2 hours before the alert went out and 108 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 2021-08-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1515 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 2021-08-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 6 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
1515 J/kg
Mixed-layer CIN
-25 J/kg
Mixed-layer LCL
821 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
6 m²/s²
0-3 km storm-relative helicity
33 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

838 
WWUS82 KMLB 082011
SPSMLB

Special Weather Statement
National Weather Service Melbourne FL
411 PM EDT Sun Aug 8 2021
 
FLZ054-059-082045-
St. Lucie FL-Indian River FL-
411 PM EDT Sun Aug 8 2021

...A strong thunderstorm will impact portions of northwestern St.
Lucie and south central Indian River Counties through 445 PM EDT...

At 409 PM EDT, Doppler radar was tracking a strong thunderstorm 7
miles southwest of Pointe West, or 11 miles southwest of Vero Beach
South. This storm was nearly stationary.

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...
Lakewood Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent to Excessive 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 2740 8059 2750 8068 2767 8056 2751 8038
TIME...MOT...LOC 2009Z 219DEG 3KT 2755 8058 

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

$$

Watson

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.