Alert archive / Florida / Special Weather Statements in 2018

Special Weather Statement, NWS Melbourne, FL

July 23, 2018Brevard County, Florida

NWS Melbourne, FL issued this special weather statement at Jul 23, 2018, 4:21 PM EDT for Brevard County, Florida. It was in force for 39 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: Jul 23, 2018, 4:21 PM EDT (20:21 UTC)
Expired: Jul 23, 2018, 5:00 PM EDT
In force: 39 min
Issued by: NWS Melbourne, FL

County Brevard County, FL

The radar

The Melbourne radar (KMLB), 30 km from the middle of the area, began a volume at 20:25 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
Jul 23, 4:55 PM EDT	TSTM WND GST 48	2 Ssw Suntree, FL	MESONET SITE MEASURED WIND GUST OF 42KT/48MPH FROM W

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, 8.4 hours before the alert went out and 14 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: 1701 J/kg
Mixed-layer CIN: -67 J/kg
Mixed-layer LCL: 1006 m above ground
0-6 km bulk shear: 4 kt
0-1 km storm-relative helicity: -16 m²/s²
0-3 km storm-relative helicity: 15 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

575 
WWUS82 KMLB 232021
SPSMLB

Special Weather Statement
National Weather Service Melbourne FL
421 PM EDT MON JUL 23 2018
 
FLZ047-147-232100-
Southern Brevard County FL-Northern Brevard County FL-
421 PM EDT MON JUL 23 2018

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL BREVARD COUNTY UNTIL 500
PM EDT...

At 419 PM EDT, National Weather Service meteorologists were tracking 
a line of strong thunderstorms from Cape Canaveral to Melbourne. 
Movement was toward the east at around 15 mph.

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

Locations impacted include...
Suntree, Viera, Rockledge, Cocoa, Cocoa Beach, and Merritt Island.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Lightning can strike 10 miles away from a thunderstorm. Seek a safe 
shelter inside a building or vehicle.

&&

LAT...LON 2839 8056 2834 8057 2813 8054 2808 8052
      2807 8087 2867 8077 2868 8060 2860 8054
      2846 8049
TIME...MOT...LOC 2019Z 282DEG 21KT 2865 8063 2814 8082 

$$

Ulrich

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 22, 11:06 PM EDT	River Flood Warning	MLB	Lake, Volusia	19 days
Jul 22, 11:09 PM EDT	Areal Flood Advisory	MLB	Orange, Osceola	96 min
Jul 23, 12:29 AM EDT	Special Marine Warning	MLB		91 min
Jul 23, 12:33 AM EDT	Special Weather Statement	MLB	Brevard	42 min
Jul 23, 12:41 AM EDT	Special Marine Warning	MLB		64 min
Jul 23, 5:30 AM EDT	Special Marine Warning	MLB		60 min
Jul 23, 12:31 PM EDT	Special Weather Statement	MLB	Martin	44 min
Jul 23, 12:48 PM EDT	Special Marine Warning	MLB		87 min
Jul 23, 1:30 PM EDT	Special Weather Statement	MLB	Martin, Saint Lucie	45 min
Jul 23, 2:11 PM EDT	Special Marine Warning	MLB		64 min
Jul 23, 2:28 PM EDT	Special Weather Statement	MLB	Indian River	32 min
Jul 23, 2:54 PM EDT	Special Marine Warning	MLB		2 hr
Jul 23, 3:03 PM EDT	Special Weather Statement	MLB	Volusia	42 min
Jul 23, 3:14 PM EDT	Special Weather Statement	MLB	Brevard, Osceola, Seminole	61 min
Jul 23, 4:48 PM EDT	Special Marine Warning	MLB		22 min
Jul 23, 4:49 PM EDT	Special Weather Statement	MLB	Flagler	26 min
Jul 23, 4:54 PM EDT	Areal Flood Advisory	MLB	Brevard	66 min

Nearby

Special Weather Statements in Florida, 2018 Every special weather statement in 2018

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.