Alert archive / Florida / Special Weather Statements in 2021

Special Weather Statement, NWS Melbourne, FL

May 6, 2021Indian River County, Florida

NWS Melbourne, FL issued this special weather statement at May 6, 2021, 3:49 PM EDT for Indian River County, Florida. It was in force for 41 min. 1 report 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: May 6, 2021, 3:49 PM EDT (19:49 UTC)
Expired: May 6, 2021, 4:30 PM EDT
In force: 41 min
Issued by: NWS Melbourne, FL

County Indian River County, FL

The radar

The Melbourne radar (KMLB), 58 km from the middle of the area, began a volume at 19:51 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
May 6, 4:12 PM EDT	TSTM WND GST 40	Vero Beach Airport, FL	THE ASOS AT VERO BEACH MUNICIPAL AIRPORT KVRB REPORTED A 40MPH/35KT WIND GUST FROM THE WSW

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, 7.8 hours before the alert went out and 95 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: 712 J/kg
Mixed-layer CIN: -59 J/kg
Mixed-layer LCL: 989 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 52 m²/s²
0-3 km storm-relative helicity: 77 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

As transmitted.

825 
WWUS82 KMLB 061949
SPSMLB

Special Weather Statement
National Weather Service Melbourne FL
349 PM EDT Thu May 6 2021
 
FLZ054-059-062030-
St. Lucie FL-Indian River FL-
349 PM EDT Thu May 6 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN ST. LUCIE AND
EASTERN INDIAN RIVER COUNTIES UNTIL 430 PM EDT...

At 349 PM EDT, Doppler radar was tracking a strong thunderstorm near 
Pointe West, or 7 miles southeast of Fellsmere, moving east at 35 
mph.

Half inch hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Sebastian, Vero Beach, Fellsmere, Indian River Shores and Vero Beach
South.

LAT...LON 2739 8060 2775 8062 2786 8041 2775 8035
      2756 8028
TIME...MOT...LOC 1949Z 253DEG 45KT 2768 8054 

$$

Pendergrast

The office that day

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

Issued	Product	Office	Counties	Lasted
May 5, 8:06 PM EDT	Special Weather Statement	MLB	Brevard	39 min
May 5, 8:09 PM EDT	Special Marine Warning	MLB		66 min
May 5, 8:21 PM EDT	Special Weather Statement	MLB	Orange	24 min
May 5, 8:41 PM EDT	Special Weather Statement	MLB	Brevard	49 min
May 6, 12:23 PM EDT	Special Weather Statement	MLB	Volusia	67 min
May 6, 12:26 PM EDT	Special Marine Warning	MLB		64 min
May 6, 12:31 PM EDT	Special Weather Statement	MLB	Brevard	29 min
May 6, 12:42 PM EDT	Special Weather Statement	MLB	Lake	48 min
May 6, 12:55 PM EDT	Special Weather Statement	MLB	Volusia	50 min
May 6, 1:01 PM EDT	Special Marine Warning	MLB		59 min
May 6, 1:16 PM EDT	Special Weather Statement	MLB	Flagler	29 min
May 6, 1:20 PM EDT	Severe Thunderstorm Warning	MLB	Volusia	40 min
May 6, 1:27 PM EDT	Special Weather Statement	MLB	Lake, Volusia	48 min
May 6, 1:36 PM EDT	Special Marine Warning	MLB		84 min
May 6, 1:54 PM EDT	Special Weather Statement	MLB	Lake, Orange	51 min
May 6, 2:00 PM EDT	Special Weather Statement	MLB	Flagler	15 min
May 6, 2:39 PM EDT	Special Marine Warning	MLB		2 hr
May 6, 2:42 PM EDT	Special Weather Statement	MLB	Brevard, Orange, Seminole	48 min
May 6, 3:28 PM EDT	Special Weather Statement	MLB	Brevard	47 min
May 6, 3:33 PM EDT	Special Weather Statement	MLB	Okeechobee	42 min
May 6, 3:56 PM EDT	Special Weather Statement	MLB	Brevard	34 min
May 6, 5:58 PM EDT	Special Weather Statement	MLB	Martin	47 min
May 6, 6:02 PM EDT	Special Marine Warning	MLB		43 min
May 6, 6:39 PM EDT	Special Marine Warning	MLB		66 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.