There is a Enhanced Severe Storm Risk for your location. Continue reading for today's outlook from the National Weather Service's Storm Prediction Center.
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National Severe Storm Outlook
THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF THE NORTHEAST
SUMMARY
Severe thunderstorms with damaging wind gusts and large hail are expected today across parts of northern New York and northern New England. Additional storms with isolated severe gusts and hail will be possible in parts of the northern Rockies and northern High Plains.
Northeast
At mid-levels today, a fast-moving shortwave trough and an associated jet streak will move southeastward across southeastern Canada. At the surface, very moist air with surface dewpoints in the 70s F will be in place over much of the Northeast. As surface temperatures warm, moderate instability will develop over much of the region. By afternoon, an axis of low-level convergence is forecast to develop along a pre-frontal trough, from near Lake Ontario northeastward into far southern Quebec. This zone will be a focus for convective initiation this afternoon. During the mid to late afternoon, thunderstorms are expected to form near the surface trough and move southeastward into northern New York and northern New England.
As the mid-level jet approaches from the northwest, the entrance region of jet will enhance lift and deep-layer shear across much of the Northeast. By late this afternoon, RAP forecast soundings over northern New England have 0-6 km shear near 50 knots, with MLCAPE peaking in the 2500 to 3000 J/kg range. The environment will support a mixed mode with supercells and organized line segments possible. 0-3 km lapse rates are forecast to peak near 7 C/km, which will support a threat for severe wind gusts, especially with intense line segments. A few severe gusts above 70 mph may occur. The potential for large hail and tornadoes will be most likely with supercells. The threat for supercells will be greatest from northern New York into northern Vermont and northwest Maine, where mid-level lapse rates are forecast to be near 7 C/km. Within this corridor, 0-3 km storm-relative helicity is forecast to be in the 250 to 300 m2/s2 range, suggesting potential for a strong tornado.
Northern Rockies/Northern High Plains
At mid-levels today, flow will be southwesterly across the northwestern U.S. At the surface, upslope flow will be in place from the northern High Plains to the Rockies. Surface dewpoints will be in the 60s F along an east-to-west moist axis, which is forecast across eastern and central Montana. As surface temperatures warm, a pocket of instability will develop near the moist axis. Thunderstorm formation will be possible along this east-to-west zone and in the higher terrain of western and central Montana. By late afternoon, RAP forecast soundings in central Montana have MLCAPE around 2000 J/kg with 0-6 km shear near 35 knots. In addition, mid-level lapse rates are forecast to be steep in the 7 to 8 C/km range. This will support a threat for isolated severe wind gusts and hail.