Alert archive / New York / Severe Thunderstorm Watches in 2001

Severe Thunderstorm Watch 506

July 4, 2001Berkshire County, Massachusetts; 30 counties in New York; 13 counties in Vermont

The Storm Prediction Center issued this severe thunderstorm watch at Jul 4, 2001, 3:30 PM EDT for Berkshire County, Massachusetts; 30 counties in New York; 13 counties in Vermont. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jul 4, 2001, 3:30 PM EDT (19:30 UTC)
Expired
Jul 4, 2001, 8:00 PM EDT
In force
5 hr
Issued by
the Storm Prediction Center
All 44 counties

Berkshire County, MA, Albany County, NY, Broome County, NY, Chemung County, NY, Chenango County, NY, Clinton County, NY, Columbia County, NY, Cortland County, NY, Delaware County, NY, Essex County, NY, Franklin County, NY, Fulton County, NY, Greene County, NY, Hamilton County, NY, Herkimer County, NY, Lewis County, NY, Madison County, NY, Montgomery County, NY, Oneida County, NY, Onondaga County, NY, Otsego County, NY, Rensselaer County, NY, Saratoga County, NY, Schenectady County, NY, Schoharie County, NY, St. Lawrence County, NY, Tioga County, NY, Tompkins County, NY, Ulster County, NY, Warren County, NY, Washington County, NY, Addison County, VT, Bennington County, VT, Caledonia County, VT, Chittenden County, VT, Essex County, VT, Franklin County, VT, Grand Isle County, VT, Lamoille County, VT, Orange County, VT, Orleans County, VT, Rutland County, VT, Washington County, VT, Windsor County, VT

The radar

The Albany radar (KENX), 88 km from the middle of the area, began a volume at 19:39 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.

Warnings issued inside it

9 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Jul 4, 3:30 PM EDTSevere Thunderstorm WarningBUFLewis60 min
Jul 4, 4:24 PM EDTSevere Thunderstorm WarningALYSaratoga51 min
Jul 4, 4:34 PM EDTSevere Thunderstorm WarningBGMBroome56 min
Jul 4, 5:43 PM EDTSevere Thunderstorm WarningBTVRutland62 min
Jul 4, 5:55 PM EDTSevere Thunderstorm WarningALYSaratoga, Washington65 min
Jul 4, 6:50 PM EDTSevere Thunderstorm WarningALYBennington40 min
Jul 4, 7:01 PM EDTSevere Thunderstorm WarningALYWashington29 min
Jul 4, 7:30 PM EDTSevere Thunderstorm WarningALYAlbany, Rensselaer, Saratoga60 min
Jul 4, 7:51 PM EDTSevere Thunderstorm WarningALYBennington, Windham54 min

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 7.5 hours before the alert went out and 94 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 2001-07-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2 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 2001-07-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 82 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
2 J/kg
Mixed-layer CIN
-118 J/kg
Mixed-layer LCL
939 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
82 m²/s²
0-3 km storm-relative helicity
175 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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.

Nearby

Severe Thunderstorm Watches in New York, 2001Severe Thunderstorm Watches in Vermont, 2001Severe Thunderstorm Watches in Massachusetts, 2001Every severe thunderstorm watch in 2001

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.