Alert archive / Florida / Mesoscale Discussions in 2025

Mesoscale Discussion 232

March 16, 202516 counties in Florida; Camden County, Georgia

The Storm Prediction Center issued this mesoscale discussion at Mar 16, 2025, 2:21 PM EDT for 16 counties in Florida; Camden County, Georgia. It was in force for 84 min.

The area

The outline as issued.

The facts

Issued
Mar 16, 2025, 2:21 PM EDT (18:21 UTC)
Expired
Mar 16, 2025, 3:45 PM EDT
In force
84 min
Issued by
the Storm Prediction Center
Concerning
Tornado watch 52

Counties Alachua County, FL, Baker County, FL, Bradford County, FL, Citrus County, FL, Clay County, FL, Duval County, FL, Flagler County, FL, Hernando County, FL, Levy County, FL, Marion County, FL, Nassau County, FL, Pasco County, FL, Putnam County, FL, Saint Johns County, FL, Sumter County, FL, Union County, FL, Camden County, GA

The radar

The Jacksonville radar (KJAX), 148 km from the middle of the area, began a volume at 18:20 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

Jacksonville, FL (KJAX), launched 12:00Z, 6.4 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.

Skew-T log-pSkew-T log-p diagram, Jacksonville, FL at 12:00Z on 2025-03-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 49 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, Jacksonville, FL at 12:00Z on 2025-03-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 454 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
49 J/kg
Mixed-layer CIN
-257 J/kg
Mixed-layer LCL
878 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
454 m²/s²
0-3 km storm-relative helicity
479 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

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 15, 8:02 PM EDTMesoscale DiscussionSPCBay, Calhoun, Escambia, Holmes, Jackson, Okaloosa and 3 more118 min
Mar 15, 8:47 PM EDTTornado WatchSPCBay, Escambia, Holmes, Jackson, Okaloosa, Santa Rosa and 2 more8 hr
Mar 16, 1:47 AM EDTMesoscale DiscussionSPCCalhoun, Gadsden, Gulf, Jefferson, Leon, Liberty and 1 more58 min
Mar 16, 2:18 AM EDTTornado WatchSPCCalhoun, Franklin, Gadsden, Gulf, Jefferson, Leon and 4 more9 hr
Mar 16, 4:43 AM EDTMesoscale DiscussionSPCGadsden, Leon, Liberty92 min
Mar 16, 7:28 AM EDTMesoscale DiscussionSPCAlachua, Baker, Bradford, Columbia, Dixie, Gilchrist and 5 more92 min
Mar 16, 8:04 AM EDTTornado WatchSPCAlachua, Baker, Bradford, Citrus, Clay, Columbia and 17 more9 hr
Mar 16, 9:31 AM EDTMesoscale DiscussionSPCBaker, Bradford, Clay, Columbia, Dixie, Duval and 8 more89 min
Mar 16, 11:39 AM EDTMesoscale DiscussionSPCAlachua, Baker, Bradford, Citrus, Clay, Columbia and 9 more96 min
Mar 16, 12:19 AM EDTMesoscale DiscussionSPCChattahoochee, Harris, Heard, Meriwether, Muscogee, Quitman and 2 more116 min
Mar 16, 5:30 AM EDTMesoscale DiscussionSPCBryan, Bulloch, Effingham, Evans, Screven, Tattnall60 min
Mar 16, 6:12 AM EDTTornado WatchSPCBryan, Bulloch, Candler, Chatham, Effingham, Evans and 6 more8 hr
Mar 16, 4:25 PM EDTMesoscale DiscussionSPCBurke, Screven95 min

Nearby

Mesoscale Discussions in Florida, 2025Mesoscale Discussions in Georgia, 2025Every mesoscale discussion in 2025

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.