Alert archive / Florida / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 43, NWS Melbourne, FL

April 27, 2023Brevard County, Indian River County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Apr 27, 2023, 11:40 PM EDT for Brevard County, Indian River County, Florida. It was in force for 35 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: Apr 27, 2023, 11:40 PM EDT (03:40 UTC)
Expired: Apr 28, 2023, 12:15 AM EDT
In force: 35 min
Issued by: NWS Melbourne, FL
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Brevard County, FL, Indian River County, FL

The radar

The Melbourne radar (KMLB), 13 km from the middle of the area, began a volume at 03:42 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

Cape Canaveral, FL (KXMR), launched 00:00Z, 3.7 hours before the alert went out and 54 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1345 J/kg
Mixed-layer CIN: -16 J/kg
Mixed-layer LCL: 836 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 89 m²/s²
0-3 km storm-relative helicity: 166 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 9.4

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Melbourne, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 27, 10:13 PM EDT, 1 hour 27 minutes earlier.

Area forecast discussion, Apr 27, 10:13 PM EDT, 1 hour 27 minutes before

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Hazardous weather outlook, Apr 27, 9:09 PM EDT, 2 hours 31 minutes before

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In the hours before

Special weather statement, Apr 27, 10:47 PM EDT, 53 minutes before

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Local storm report, Apr 27, 11:01 PM EDT, 39 minutes before

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Local storm report, Apr 27, 11:18 PM EDT, 22 minutes before

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Local storm report, Apr 27, 11:19 PM EDT, 21 minutes before

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Local storm report, Apr 27, 11:20 PM EDT, 20 minutes before

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Local storm report, Apr 27, 11:33 PM EDT, 7 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 27, 8:03 PM EDT	Tornado Warning	MLB	Orange, Osceola	27 min
Apr 27, 8:04 PM EDT	Special Weather Statement	MLB	Martin	41 min
Apr 27, 8:13 PM EDT	Special Marine Warning	MLB		47 min
Apr 27, 8:39 PM EDT	Tornado Warning	MLB	Martin	36 min
Apr 27, 9:12 PM EDT	Special Weather Statement	MLB	Martin	48 min
Apr 27, 9:18 PM EDT	Special Weather Statement	MLB	Brevard	42 min
Apr 27, 9:34 PM EDT	Special Weather Statement	MLB	Lake, Volusia	41 min
Apr 27, 9:54 PM EDT	Special Weather Statement	MLB	Martin	51 min
Apr 27, 10:11 PM EDT	Special Weather Statement	MLB	Orange, Seminole, Volusia	49 min
Apr 27, 10:46 PM EDT	Special Marine Warning	MLB		59 min
Apr 27, 10:47 PM EDT	Special Weather Statement	MLB	Brevard, Osceola	88 min
Apr 27, 10:58 PM EDT	Special Marine Warning	MLB		92 min
Apr 27, 11:52 PM EDT	Special Weather Statement	MLB	Martin, Okeechobee, Saint Lucie	53 min
Apr 28, 12:02 AM EDT	Special Marine Warning	MLB		58 min
Apr 28, 12:59 AM EDT	Special Weather Statement	MLB	Martin	31 min
Apr 28, 5:00 PM EDT	Special Weather Statement	MLB	Indian River	30 min
Apr 28, 5:26 PM EDT	Special Marine Warning	MLB		2 hr
Apr 28, 5:27 PM EDT	Severe Thunderstorm Warning	MLB	Brevard, Indian River	37 min
Apr 28, 6:02 PM EDT	Special Weather Statement	MLB	Brevard	43 min
Apr 28, 6:09 PM EDT	Special Weather Statement	MLB	Indian River	36 min
Apr 28, 6:49 PM EDT	Special Weather Statement	MLB	Indian River	26 min
Apr 28, 6:57 PM EDT	Special Marine Warning	MLB		2 hr
Apr 28, 7:07 PM EDT	Special Weather Statement	MLB	Martin	8 min
Apr 28, 7:35 PM EDT	Special Weather Statement	MLB	Martin	25 min
Apr 28, 7:39 PM EDT	Severe Thunderstorm Warning	MLB	Martin	21 min
Apr 28, 7:49 PM EDT	Special Marine Warning	MLB		56 min

Nearby

Severe Thunderstorm Warnings in Florida, 2023 Every 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.