Weather Alerts For Gilsum, NH

There is a Slight Severe Storm Risk for your location. Continue reading for today's outlook from the National Weather Service's Storm Prediction Center. -------------------- National Severe Storm Outlook THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM NORTHERN GEORGIA NORTHWARD INTO PORTIONS OF SOUTHERN NEW ENGLAND SUMMARY Scattered severe thunderstorms capable of damaging wind gusts are expected across the Mid-Atlantic vicinity during the afternoon and evening. Additional strong to severe storms are expected across the upper Ohio Valley and Lower Great Lakes area. Synopsis A broad large-scale trough and accompanying belt of strong midlevel west-southwesterly flow will move eastward from the Great Lakes/upper OH Valley region into the Northeast through the period. At the same time, a related cold front will advance eastward across the OH Valley during the afternoon, before reaching the Mid-Atlantic and southern New England coast during the overnight hours. Southern Appalachians into the Mid-Atlantic Widely scattered thunderstorms are expected ahead of the cold front during the afternoon, focused within a pre-frontal trough extending from the Mid-Atlantic southward into the lee of the southern Appalachians. From roughly southern/eastern VA southward, upper 60s to lower 70s dewpoints and steepening boundary-layer lapse rates will yield a corridor of strong surface-based buoyancy ahead of storms. Despite weaker deep-layer shear and limited midlevel height falls with southward extent, the strongly unstable air mass will favor eastward-moving thunderstorm clusters capable of producing damaging wind gusts. Over the Mid-Atlantic region, stronger midlevel westerly flow will contribute to 30-40 kt of effective shear amid moderate surface-based buoyancy. This environment will support several loosely organized clusters capable of scattered damaging wind gusts. Here, 30-percent wind probabilities remain in place, and while a locally higher concentration of wind damage will be possible with any longer-lived clusters that may evolve, this will be largely dependent on mesoscale factors. Upper OH Valley into southern New England Along the cold front, a broken band of thunderstorms will spread eastward from the lower Great Lakes into the upper OH Valley and southern New England during the afternoon into the evening hours. Stronger midlevel height falls and around 40 kt of front-parallel effective shear should favor a linear mode, with the primary concern being strong-severe wind gusts. Southern High Plains Along the tail-end of a composite cold front/outflow boundary extending westward into the southern Rockies/High Plains, widely scattered thunderstorms will spread southeastward during the afternoon. Given moist easterly low-level flow and 30-40 kt of effective shear along the boundary, a couple loosely organized storms will pose a risk of locally severe gusts and hail. Additional storms are expected along the boundary extending eastward across northern/central TX to the ArkLaTex, though weaker deep-layer shear should limit storm longevity/organization here.

Pollen Index: 10.1 Pollen Level: high Predominant Pollen: Grass, Oak and Birch. The amount of pollen in the air for Monday will be falling in the moderate range. This change results in part from falling temperatures, rising humidity, and heavy rains in the morning and evening which tend to wash pollen out of the air. With this amount of reduction in pollen levels, tomorrow should be better for allergy sufferers.