Alert archive / Florida / Mesoscale Discussions in 2022

Mesoscale Discussion 231

March 9, 202215 counties in Florida; 10 counties in Georgia

The Storm Prediction Center issued this mesoscale discussion at Mar 9, 2022, 10:15 AM EST for 15 counties in Florida; 10 counties in Georgia. It was in force for 90 min.

The area

The outline as issued.

The facts

Issued
Mar 9, 2022, 10:15 AM EST (15:15 UTC)
Expired
Mar 9, 2022, 11:45 AM EST
In force
90 min
Issued by
the Storm Prediction Center
Concerning
Tornado watch 40
All 25 counties

Baker County, FL, Bradford County, FL, Clay County, FL, Columbia County, FL, Duval County, FL, Gilchrist County, FL, Hamilton County, FL, Lafayette County, FL, Madison County, FL, Nassau County, FL, Saint Johns County, FL, Suwannee County, FL, Taylor County, FL, Union County, FL, Wakulla County, FL, Brantley County, GA, Camden County, GA, Charlton County, GA, Clinch County, GA, Echols County, GA, Glynn County, GA, Lanier County, GA, Lowndes County, GA, Pierce County, GA, Ware County, GA

The radar

The Moody AFB radar (KVAX), 51 km from the middle of the area, began a volume at 15:15 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 12:00Z, 3.3 hours before the alert went out and 154 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 12:00Z on 2022-03-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 935 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 12:00Z on 2022-03-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 176 square meters per square second.19395878Sfc1 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
935 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
474 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
176 m²/s²
0-3 km storm-relative helicity
196 m²/s²
Significant tornado parameter
0.6
Supercell composite
3.1

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 9, 1:58 AM ESTMesoscale DiscussionSPCEscambia, Holmes, Okaloosa, Santa Rosa, Walton, Washington2 hr
Mar 9, 2:21 AM ESTTornado WatchSPCBay, Calhoun, Escambia, Gulf, Holmes, Jackson and 4 more8 hr
Mar 9, 4:28 AM ESTMesoscale DiscussionSPCHolmes, Okaloosa, Walton, Washington92 min
Mar 9, 5:47 AM ESTMesoscale DiscussionSPCGadsden, Hamilton, Jefferson, Leon, Liberty, Madison and 2 more118 min
Mar 9, 6:18 AM ESTTornado WatchSPCDixie, Franklin, Gadsden, Gulf, Hamilton, Jefferson and 6 more7 hr
Mar 9, 8:15 AM ESTMesoscale DiscussionSPCCalhoun, Gadsden, Jackson, Jefferson, Leon, Liberty and 1 more2 hr
Mar 9, 6:03 PM ESTMesoscale DiscussionSPCBrevard, Citrus, Flagler, Hernando, Lake, Levy and 8 more117 min

Nearby

Mesoscale Discussions in Florida, 2022Mesoscale Discussions in Georgia, 2022Every mesoscale discussion in 2022

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.