Alert archive / Florida / Mesoscale Discussions in 2014
Mesoscale Discussion 171
The Storm Prediction Center issued this mesoscale discussion at Mar 6, 2014, 10:48 AM EST for 21 counties in Florida. It was in force for 87 min.
The area
The outline as issued.
The facts
- Issued
- Mar 6, 2014, 10:48 AM EST (15:48 UTC)
- Expired
- Mar 6, 2014, 12:15 PM EST
- In force
- 87 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 80%
All 21 counties
Brevard County, FL, Broward County, FL, Charlotte County, FL, Collier County, FL, DeSoto County, FL, Glades County, FL, Hardee County, FL, Hendry County, FL, Highlands County, FL, Indian River County, FL, Lee County, FL, Martin County, FL, Miami-Dade County, FL, Monroe 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
The radar
The Melbourne radar (KMLB), 147 km from the middle of the area, began a volume at 15:52 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 nearest sounding before it
Miami, FL (KMFL), launched 12:00Z, 3.8 hours before the alert went out and 149 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.
- Mixed-layer CAPE
- 888 J/kg
- Mixed-layer CIN
- -19 J/kg
- Mixed-layer LCL
- 967 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 37 m²/s²
- 0-3 km storm-relative helicity
- 75 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.7
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 6, 11:28 AM EST | Tornado Watch | SPC | Brevard, Broward, Charlotte, Collier, DeSoto, Glades and 19 more | 5 hr |
| Mar 6, 1:46 PM EST | Mesoscale Discussion | SPC | Broward, Indian River, Martin, Miami-Dade, Palm Beach, Saint Lucie | 89 min |
Nearby
Mesoscale Discussions in Florida, 2014Every mesoscale discussion in 2014
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.