Alert archive / Florida / Special Weather Statements in 2021

Special Weather Statement, NWS Melbourne, FL

August 9, 2021Orange County, Florida

NWS Melbourne, FL issued this special weather statement at Aug 9, 2021, 3:29 PM EDT for Orange County, Florida. It was in force for 46 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 9, 2021, 3:29 PM EDT (19:29 UTC)
Expired
Aug 9, 2021, 4:15 PM EDT
In force
46 min
Issued by
NWS Melbourne, FL
Hail
0.00 in
Wind
40

County Orange County, FL

The radar

The Melbourne radar (KMLB), 92 km from the middle of the area, began a volume at 19:29 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, 7.5 hours before the alert went out and 100 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 2021-08-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 850 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 2021-08-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -19 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
850 J/kg
Mixed-layer CIN
-40 J/kg
Mixed-layer LCL
1083 m above ground
0-6 km bulk shear
2 kt
0-1 km storm-relative helicity
-19 m²/s²
0-3 km storm-relative helicity
-2 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

760 
WWUS82 KMLB 091929
SPSMLB

Special Weather Statement
National Weather Service Melbourne FL
329 PM EDT Mon Aug 9 2021
 
FLZ045-053-092015-
Osceola FL-Orange FL-
329 PM EDT Mon Aug 9 2021

...A strong thunderstorm will impact portions of southwestern Orange
and northwestern Osceola Counties through 415 PM EDT...

At 328 PM EDT, Doppler radar was tracking a strong thunderstorm near
Sea World, or near Celebration, moving south at 15 mph.

HAZARD...Winds in excess of 45 mph.

SOURCE...Radar indicated.

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

Locations impacted include...
Orlando, Kissimmee, Ocoee, Winter Garden and Windermere. 

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.

&&

LAT...LON 2854 8163 2850 8135 2828 8137 2827 8164
TIME...MOT...LOC 1928Z 018DEG 11KT 2836 8150 

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

$$

KN

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.