Alert archive / Florida / Special Weather Statements in 2021

Special Weather Statement, NWS Melbourne, FL

June 22, 2021Orange County, Seminole County, Florida

NWS Melbourne, FL issued this special weather statement at Jun 22, 2021, 4:04 PM EDT for Orange County, Seminole County, Florida. It was in force for 41 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jun 22, 2021, 4:04 PM EDT (20:04 UTC)
Expired: Jun 22, 2021, 4:45 PM EDT
In force: 41 min
Issued by: NWS Melbourne, FL

Counties Orange County, FL, Seminole County, FL

The radar

The Melbourne radar (KMLB), 93 km from the middle of the area, began a volume at 20:06 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.

What was reported inside it

Time	Report	Where	Remark
Jun 22, 4:18 PM EDT	TSTM WND GST 48	Sanford Airport, FL	MEASURED WIND GUST OUT OF THE NORTHWEST 41 KNOTS/48 MPH.
Jun 22, 4:19 PM EDT	TSTM WND GST 44	4 S Lake Jessup, FL	URBANET SITE OVEID MEASURES WIND GUST OF 44MPH FROM S

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Cape Canaveral, FL (KXMR), launched 12:00Z, 8.1 hours before the alert went out and 78 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: 1334 J/kg
Mixed-layer CIN: -48 J/kg
Mixed-layer LCL: 808 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 109 m²/s²
0-3 km storm-relative helicity: 162 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

333 
WWUS82 KMLB 222004
SPSMLB

Special Weather Statement
National Weather Service Melbourne FL
404 PM EDT Tue Jun 22 2021
 
FLZ041-045-046-222045-
Orange FL-Seminole FL-Inland Volusia FL-
404 PM EDT Tue Jun 22 2021

...SIGNIFICANT WEATHER ADVISORY FOR SEMINOLE...CENTRAL ORANGE AND
SOUTH CENTRAL VOLUSIA COUNTIES UNTIL 445 PM EDT...

At 403 PM EDT, Doppler radar was tracking a strong thunderstorm over 
Azalea Park, moving northeast at 30 mph. Another strong storm with 
very gusty winds was located over the Central Florida Zoo.

Wind gusts of 50 to 55 mph will be possible with these storms.

Locations impacted include...
Orlando, Deltona, Sanford, Altamonte Springs and Oviedo. 

LAT...LON 2879 8097 2861 8097 2860 8095 2859 8095
      2843 8125 2860 8143 2885 8139 2887 8137
      2889 8137 2889 8135 2894 8135 2897 8137
      2898 8136 2906 8107
TIME...MOT...LOC 2003Z 233DEG 24KT 2857 8128 

$$

Sedlock

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 22, 3:23 PM EDT	Special Weather Statement	MLB	Orange	52 min
Jun 22, 3:41 PM EDT	Special Weather Statement	MLB	Lake	49 min
Jun 22, 3:56 PM EDT	Special Weather Statement	MLB	Lake	34 min
Jun 22, 4:01 PM EDT	Special Marine Warning	MLB		3 hr
Jun 22, 4:09 PM EDT	Severe Thunderstorm Warning	MLB	Seminole, Volusia	17 min
Jun 22, 4:33 PM EDT	Special Weather Statement	MLB	Seminole	42 min
Jun 22, 4:45 PM EDT	Special Marine Warning	MLB		3 hr
Jun 22, 5:03 PM EDT	Special Weather Statement	MLB	Osceola	42 min
Jun 22, 5:11 PM EDT	Special Weather Statement	MLB	Lake	49 min
Jun 22, 5:32 PM EDT	Special Marine Warning	MLB		3 hr
Jun 22, 5:42 PM EDT	Special Weather Statement	MLB	Indian River	48 min
Jun 22, 6:10 PM EDT	Special Weather Statement	MLB	Orange	35 min
Jun 22, 6:36 PM EDT	Special Weather Statement	MLB	Brevard	9 min
Jun 22, 6:54 PM EDT	Special Weather Statement	MLB	Okeechobee	51 min
Jun 22, 7:06 PM EDT	Special Weather Statement	MLB	Osceola	39 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.