Alert archive / Florida / Special Weather Statements in 2011

Special Weather Statement, NWS Melbourne, FL

June 24, 2011Osceola County, Florida

NWS Melbourne, FL issued this special weather statement at Jun 24, 2011, 4:21 PM EDT for Osceola County, Florida. It was in force for 39 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: Jun 24, 2011, 4:21 PM EDT (20:21 UTC)
Expired: Jun 24, 2011, 5:00 PM EDT
In force: 39 min
Issued by: NWS Melbourne, FL

County Osceola County, FL

The radar

The Melbourne radar (KMLB), 21 km from the middle of the area, began a volume at 20:21 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, 8.4 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-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: 978 J/kg
Mixed-layer CIN: -49 J/kg
Mixed-layer LCL: 1018 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: -2 m²/s²
0-3 km storm-relative helicity: 24 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

217 
WWUS82 KMLB 242021
SPSMLB

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
421 PM EDT FRI JUN 24 2011

FLZ047-053-242100-
OSCEOLA-SOUTHERN BREVARD COUNTY-
421 PM EDT FRI JUN 24 2011

...A SIGNIFICANT WEATHER ADVISORY IS IN EFFECT FOR STRONG WIND GUSTS 
BETWEEN 45 AND 55 MPH AND SMALL HAIL OVER EXTREME WEST CENTRAL 
BREVARD COUNTY...EAST CENTRAL OSCEOLA COUNTY...

* UNTIL 500 PM EDT.

AT 413 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STORM CAPABLE OF PRODUCING STRONG WINDS AND SMALL HAIL OVER DEER 
PARK...NEARLY STATIONARY.

THIS STORM WILL AFFECT PERSONS DRIVING ON U.S. HIGHWAY 192 AND 
COUNTY ROAD 419 NEAR DEER PARK.

THE PRIMARY THREAT WILL BE CLOUD TO GROUND LIGHTNING STRIKES AND
GUSTY WINDS OF 45 TO 55 MPH...WHICH CAN CAUSE UNSECURED OBJECTS TO
BLOW AROUND...SNAP TREE LIMBS OR CAUSE POWER OUTAGES. HEAVY RAINFALL
WILL TEMPORARILY REDUCE VISIBILITY. SEEK SHELTER INDOORS UNTIL THE
STORM PASSES.

TORRENTIAL RAINFALL CAN BE EXPECTED...CAUSING TEMPORARY PONDING ON
SOME ROADS AND MINOR FLOODING OF POOR DRAINAGE AREAS. MOTORISTS
SHOULD SLOW DOWN IN HEAVY RAINFALL TO REDUCE THE RISK OF HYDROPLANING
AND LEAVE SAFE DISTANCE BETWEEN OTHER VEHICLES.

STATE LAW REQUIRES HEADLIGHTS TO BE TURNED ON WHEN WINDSHIELD WIPERS
ARE IN USE.

LAT...LON 2803 8075 2798 8097 2817 8102 2822 8082
TIME...MOT...LOC 2019Z 343DEG 4KT 2811 8089

$$



CRISTALDI

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 23, 9:26 PM EDT	Areal Flood Advisory	MLB	Lake, Volusia	56 min
Jun 23, 10:23 PM EDT	Areal Flood Advisory	MLB	Lake	112 min
Jun 24, 3:55 PM EDT	Special Weather Statement	MLB	Brevard	50 min
Jun 24, 4:17 PM EDT	Special Weather Statement	MLB	Indian River	43 min
Jun 24, 4:25 PM EDT	Special Weather Statement	MLB	Flagler	50 min
Jun 24, 4:45 PM EDT	Special Weather Statement	MLB	Volusia	45 min
Jun 24, 4:46 PM EDT	Special Weather Statement	MLB	Orange, Osceola, Seminole	119 min
Jun 24, 5:08 PM EDT	Special Weather Statement	MLB	Volusia	37 min
Jun 24, 5:12 PM EDT	Special Weather Statement	MLB	Volusia	33 min
Jun 24, 5:27 PM EDT	Areal Flood Advisory	MLB	Volusia	2 hr
Jun 24, 5:38 PM EDT	Special Weather Statement	MLB	Volusia	37 min
Jun 24, 5:50 PM EDT	Special Weather Statement	MLB	Orange	40 min
Jun 24, 5:54 PM EDT	Severe Thunderstorm Warning	MLB	Seminole	20 min
Jun 24, 6:00 PM EDT	Special Weather Statement	MLB	Osceola	45 min

Nearby

Special Weather Statements in Florida, 2011 Every special weather statement in 2011

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.