Alert archive / Maine / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 42, NWS Gray, ME

September 27, 1998Hancock County, Penobscot County, Maine

NWS Gray, ME issued this severe thunderstorm warning at Sep 27, 1998, 7:18 PM EDT for Hancock County, Penobscot County, Maine. It was in force for 62 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
Sep 27, 1998, 7:18 PM EDT (23:18 UTC)
Expired
Sep 27, 1998, 8:20 PM EDT
In force
62 min
Issued by
NWS Gray, ME
Area
Whole counties

Counties Hancock County, ME, Penobscot County, ME

The radar

The Caribou radar (KCBW), 130 km from the middle of the area, began a volume at 23:19 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

Gray, ME (KGYX), launched 12:00Z, 11.3 hours before the alert went out and 185 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, Gray, ME at 12:00Z on 1998-09-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Gray, ME at 12:00Z on 1998-09-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 285 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
835 m above ground
0-6 km bulk shear
60 kt
0-1 km storm-relative helicity
285 m²/s²
0-3 km storm-relative helicity
333 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 27, 5:32 PM EDTSevere Thunderstorm WarningGYXPenobscot, Somerset63 min
Sep 27, 5:57 PM EDTSevere Thunderstorm WarningGYXPiscataquis, Somerset63 min
Sep 27, 7:41 PM EDTSevere Thunderstorm WarningGYXWashington49 min
Sep 27, 7:29 PM EDTSevere Thunderstorm WarningGYXCoos31 min

Nearby

Severe Thunderstorm Warnings in Maine, 1998Every severe thunderstorm warning in 1998

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.