Alert archive / Florida / Mesoscale Discussions in 2011

Mesoscale Discussion 193

March 5, 2011Gadsden County, Liberty County, Florida

The Storm Prediction Center issued this mesoscale discussion at Mar 5, 2011, 10:19 PM EST for Gadsden County, Liberty County, Florida. It was in force for 56 min.

The area

The outline as issued.

The facts

Issued
Mar 5, 2011, 10:19 PM EST (03:19 UTC)
Expired
Mar 5, 2011, 11:15 PM EST
In force
56 min
Issued by
the Storm Prediction Center

Counties Gadsden County, FL, Liberty County, FL

The radar

The Tallahassee radar (KTLH), 57 km from the middle of the area, began a volume at 03:20 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

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 3.3 hours before the alert went out and 60 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-pSkew-T log-p diagram, Tallahassee Rgnl, FL at 00:00Z on 2011-03-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tallahassee Rgnl, FL at 00:00Z on 2011-03-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 136 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
3 J/kg
Mixed-layer CIN
-51 J/kg
Mixed-layer LCL
1138 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
136 m²/s²
0-3 km storm-relative helicity
142 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

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
Mar 5, 8:12 PM ESTMesoscale DiscussionSPCBay, Calhoun, Gulf, Holmes, Jackson, Okaloosa and 2 more93 min
Mar 6, 1:29 PM ESTMesoscale DiscussionSPCIndian River, Martin, Okeechobee, Palm Beach, Saint Lucie2 hr

Nearby

Mesoscale Discussions in Florida, 2011Every mesoscale discussion in 2011

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.