Alert archive / Florida / Special Weather Statements in 2019

Special Weather Statement, NWS Melbourne, FL

July 6, 2019Volusia County, Florida

NWS Melbourne, FL issued this special weather statement at Jul 6, 2019, 1:39 PM EDT for Volusia County, Florida. It was in force for 51 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: Jul 6, 2019, 1:39 PM EDT (17:39 UTC)
Expired: Jul 6, 2019, 2:30 PM EDT
In force: 51 min
Issued by: NWS Melbourne, FL

County Volusia County, FL

The radar

The Melbourne radar (KMLB), 133 km from the middle of the area, began a volume at 17:42 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, 5.7 hours before the alert went out and 104 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: 697 J/kg
Mixed-layer CIN: -32 J/kg
Mixed-layer LCL: 988 m above ground
0-6 km bulk shear: 4 kt
0-1 km storm-relative helicity: -24 m²/s²
0-3 km storm-relative helicity: -1 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Melbourne, FL wrote its last area forecast discussion before this special weather statement went out at Jul 6, 9:33 AM EDT, 4 hours 6 minutes earlier.

Area forecast discussion, Jul 6, 9:33 AM EDT, 4 hours 6 minutes before

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Hazardous weather outlook, Jul 6, 4:16 AM EDT, 9 hours 23 minutes before

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In the hours before

Special weather statement, Jul 6, 1:39 PM EDT, 0 minutes before

Special Weather Statement
National Weather Service Melbourne FL
139 PM EDT Sat Jul 6 2019

FLZ041-141-061830-
Coastal Volusia FL-Inland Volusia FL-
139 PM EDT Sat Jul 6 2019

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL VOLUSIA COUNTY UNTIL 230
PM EDT...

At 138 PM EDT, Doppler radar was tracking a strong thunderstorm 6
miles northeast of Deltona, moving north at 10 mph. An additional
strong storm was developing 4 miles west of Daytona Beach.

Winds in excess of 40 mph will be possible with this storm.

Locations impacted include...
Deltona, Daytona Beach, Port Orange, Ormond Beach and New Smyrna
Beach.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 2943 8109 2909 8091 2885 8105 2891 8122
      2927 8116 2927 8115 2929 8115 2942 8113
      2942 8111
TIME...MOT...LOC 1738Z 195DEG 8KT 2895 8113

15

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 6, 1:13 PM EDT	Special Marine Warning	MLB		62 min
Jul 6, 3:08 PM EDT	Special Weather Statement	MLB	Saint Lucie	37 min
Jul 6, 3:18 PM EDT	Special Weather Statement	MLB	Orange	27 min
Jul 6, 3:35 PM EDT	Special Weather Statement	MLB	Flagler	40 min
Jul 6, 4:05 PM EDT	Special Weather Statement	MLB	Seminole	40 min
Jul 6, 4:50 PM EDT	Special Weather Statement	MLB	Orange, Osceola	55 min
Jul 6, 5:33 PM EDT	Areal Flood Advisory	MLB	Osceola	57 min
Jul 6, 6:07 PM EDT	Special Marine Warning	MLB		53 min
Jul 6, 6:12 PM EDT	Special Weather Statement	MLB	Orange	48 min
Jul 6, 6:48 PM EDT	Special Marine Warning	MLB		57 min

Nearby

Special Weather Statements in Florida, 2019 Every special weather statement in 2019

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.