Alert archive / Florida / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 137, NWS Melbourne, FL

July 31, 2023Martin County, Saint Lucie County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Jul 31, 2023, 4:22 PM EDT for Martin County, Saint Lucie County, Florida. It was in force for 23 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 31, 2023, 4:22 PM EDT (20:22 UTC)
Expired
Jul 31, 2023, 4:45 PM EDT
In force
23 min
Issued by
NWS Melbourne, FL
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Martin County, FL, Saint Lucie County, FL

The radar

The Melbourne radar (KMLB), 101 km from the middle of the area, began a volume at 20:22 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

Miami, FL (KMFL), launched 12:00Z, 8.4 hours before the alert went out and 157 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, Miami, FL at 12:00Z on 2023-07-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1829 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, Miami, FL at 12:00Z on 2023-07-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -1 square meters per square second.1939Sfc1 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
1829 J/kg
Mixed-layer CIN
-9 J/kg
Mixed-layer LCL
975 m above ground
0-6 km bulk shear
5 kt
0-1 km storm-relative helicity
-1 m²/s²
0-3 km storm-relative helicity
-13 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

Everything else NWS Melbourne, FL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 31, 2:56 AM EDTHeat AdvisoryMLBMartin, Okeechobee, Saint Lucie14 hr
Jul 31, 1:06 PM EDTSpecial Weather StatementMLBLake54 min
Jul 31, 1:42 PM EDTSpecial Weather StatementMLBLake48 min
Jul 31, 2:01 PM EDTSpecial Weather StatementMLBLake29 min
Jul 31, 2:10 PM EDTSevere Thunderstorm WarningMLBLake20 min
Jul 31, 2:20 PM EDTSpecial Weather StatementMLBOrange40 min
Jul 31, 2:35 PM EDTAreal Flood AdvisoryMLBLake115 min
Jul 31, 2:43 PM EDTAreal Flood AdvisoryMLBOrange2 hr
Jul 31, 2:47 PM EDTSpecial Weather StatementMLBVolusia43 min
Jul 31, 2:55 PM EDTAreal Flood AdvisoryMLBOrange2 hr
Jul 31, 2:59 PM EDTSpecial Weather StatementMLBOrange46 min
Jul 31, 3:09 PM EDTSpecial Marine WarningMLB2 hr
Jul 31, 3:21 PM EDTAreal Flood AdvisoryMLBOrange, Osceola114 min
Jul 31, 3:25 PM EDTSpecial Weather StatementMLBBrevard, Osceola, Seminole, Volusia65 min
Jul 31, 3:31 PM EDTSevere Thunderstorm WarningMLBOsceola29 min
Jul 31, 3:37 PM EDTAreal Flood AdvisoryMLBSeminole, Volusia113 min
Jul 31, 3:57 PM EDTSpecial Marine WarningMLB93 min
Jul 31, 3:57 PM EDTSevere Thunderstorm WarningMLBBrevard, Osceola33 min
Jul 31, 4:02 PM EDTSpecial Weather StatementMLBSaint Lucie28 min
Jul 31, 4:04 PM EDTSpecial Weather StatementMLBMartin26 min
Jul 31, 4:23 PM EDTSevere Thunderstorm WarningMLBBrevard37 min
Jul 31, 4:29 PM EDTSpecial Weather StatementMLBVolusia31 min
Jul 31, 4:44 PM EDTSpecial Weather StatementMLBSaint Lucie46 min
Jul 31, 4:51 PM EDTAreal Flood AdvisoryMLBBrevard, Orange, Osceola114 min
Jul 31, 4:58 PM EDTSpecial Marine WarningMLB2 hr
Jul 31, 5:03 PM EDTSpecial Weather StatementMLBBrevard, Indian River42 min
Jul 31, 5:12 PM EDTAreal Flood AdvisoryMLBMartin, Saint Lucie2 hr
Jul 31, 5:28 PM EDTSpecial Weather StatementMLBOkeechobee, Saint Lucie32 min
Jul 31, 5:35 PM EDTAreal Flood AdvisoryMLBIndian River, Saint Lucie100 min
Jul 31, 5:43 PM EDTAreal Flood AdvisoryMLBOkeechobee, Saint Lucie92 min
Jul 31, 6:01 PM EDTSpecial Weather StatementMLBIndian River, Okeechobee, Saint Lucie44 min
Jul 31, 6:15 PM EDTSpecial Marine WarningMLB90 min

Nearby

Severe Thunderstorm Warnings in Florida, 2023Every severe thunderstorm warning in 2023

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.