Alert archive / Maine / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 16, NWS Caribou, ME

June 20, 2024Hancock County, Penobscot County, Piscataquis County, Maine

NWS Caribou, ME issued this severe thunderstorm warning at Jun 20, 2024, 3:45 PM EDT for Hancock County, Penobscot County, Piscataquis County, Maine. It was in force for 45 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
Jun 20, 2024, 3:45 PM EDT (19:45 UTC)
Expired
Jun 20, 2024, 4:30 PM EDT
In force
45 min
Issued by
NWS Caribou, ME
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Hancock County, ME, Penobscot County, ME, Piscataquis County, ME

The radar

The Caribou radar (KCBW), 114 km from the middle of the area, began a volume at 19:47 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 20, 12:59 PM EDTSevere Thunderstorm WatchSPC9 hr

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 7.8 hours before the alert went out and 496 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, Albany, NY at 12:00Z on 2024-06-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 616 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, Albany, NY at 12:00Z on 2024-06-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 50 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
616 J/kg
Mixed-layer CIN
-142 J/kg
Mixed-layer LCL
1000 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
50 m²/s²
0-3 km storm-relative helicity
71 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

Everything else NWS Caribou, ME issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 19, 8:06 PM EDTExcessive Heat WarningCARHancock, Penobscot, Washington23 hr
Jun 19, 8:06 PM EDTHeat AdvisoryCARAroostook, Penobscot, Piscataquis, Washington23 hr
Jun 20, 3:37 PM EDTSpecial Weather StatementCARHancock38 min
Jun 20, 4:19 PM EDTSevere Thunderstorm WarningCARHancock, Penobscot, Washington56 min
Jun 20, 4:56 PM EDTSpecial Marine WarningCAR64 min
Jun 20, 5:05 PM EDTSevere Thunderstorm WarningCARHancock, Washington40 min
Jun 20, 5:57 PM EDTSpecial Marine WarningCAR63 min

Nearby

Severe Thunderstorm Warnings in Maine, 2024Every severe thunderstorm warning in 2024

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.