Alert archive / Florida / Mesoscale Discussions in 2015

Mesoscale Discussion 395

April 20, 201513 counties in Florida

The Storm Prediction Center issued this mesoscale discussion at Apr 20, 2015, 12:13 PM EDT for 13 counties in Florida. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Apr 20, 2015, 12:13 PM EDT (16:13 UTC)
Expired
Apr 20, 2015, 2:15 PM EDT
In force
2 hr
Issued by
the Storm Prediction Center
Chance of a watch
60%

Counties Brevard County, FL, Broward County, FL, Indian River County, FL, Lake County, FL, Martin County, FL, Okeechobee County, FL, Orange County, FL, Osceola County, FL, Palm Beach County, FL, Polk County, FL, Saint Lucie County, FL, Seminole County, FL, Volusia County, FL

The radar

The Melbourne radar (KMLB), 69 km from the middle of the area, began a volume at 16:14 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The text

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

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 20, 8:35 AM EDTMesoscale DiscussionSPCAlachua, Baker, Bay, Bradford, Calhoun, Columbia and 16 more2 hr
Apr 20, 11:04 AM EDTSevere Thunderstorm WatchSPCAlachua, Baker, Bradford, Citrus, Clay, Columbia and 22 more8 hr
Apr 20, 1:03 PM EDTSevere Thunderstorm WatchSPCBrevard, Broward, Indian River, Lake, Martin, Miami-Dade and 7 more6 hr
Apr 20, 2:44 PM EDTMesoscale DiscussionSPCAlachua, Bradford, Citrus, Clay, Duval, Flagler and 12 more91 min
Apr 20, 4:29 PM EDTMesoscale DiscussionSPCBrevard, Broward, Indian River, Lake, Martin, Miami-Dade and 7 more2 hr
Apr 20, 5:24 PM EDTMesoscale DiscussionSPCBroward, Hillsborough, Indian River, Manatee, Martin, Okeechobee and 4 more96 min

Nearby

Mesoscale Discussions in Florida, 2015Every mesoscale discussion in 2015

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.