Weather Alerts For Roslyn, NY

# SUMMARY -------------------- Areas of fog early this morning may be locally dense at times with visibility one quarter mile. Be prepared for rapidly changing visibilities. If driving, slow down, use your low beam headlights or fog lamps, and leave plenty of distance ahead of you. # DETAILS -------------------- ISSUED AT Thursday, June 18, 2026 at 6:41 AM EDT ISSUED BY National Weather Service New York NY HEADER Special Weather Statement # AREAS AFFECTED -------------------- Southeast Suffolk, Northeast Suffolk, Northern Nassau, Northwest Suffolk, Southern Nassau, Southwest Suffolk

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 KENTUCKY INTO THE MID ATLANTIC...OVER MUCH OF THE NORTHEAST...AND ALONG THE NORTHERN GULF COAST SUMMARY Isolated to scattered severe thunderstorms will be possible from Kentucky to the Mid-Atlantic, with primarily damaging wind gusts or marginal hail. Scattered severe storms are possible from upstate New York into New England, with damaging gusts or even a tornado. A few tornadoes may occur over parts of the Gulf Coast states, and scattered storms may produce gusty winds or marginal hail from Oklahoma into northwest Texas. From KY into the Mid Atlantic Moderate mid to high level westerlies will exist from the OH Valley to Mid Atlantic, south of the primary wave over the Northeast. This region will be south of the midlevel drying, with ample low-level moisture remaining in place ahead of the slower moving portion of the front. Scattered storms may be ongoing early in the day from KY into WV, with perhaps wind or even tornado potential as SRH will be high at that time. As heating occurs during the day, boundary layer mixing as well as veering and weakening winds at 850 mb may reduce tornado risk. However, ample deep-layer shear and nearly unidirectional wind profiles will favor both cells and fast-moving clusters of storms producing damaging gusts and locally severe hail throughout the day. Northeast Within a broader area of cyclonic flow aloft, a leading shortwave trough will move from the Lower Great Lakes into the Northeast, with a 90 kt midlevel speed max and cooling aloft moving across NY and parts of New England during the day. Low pressure will develop into southern Quebec, with a cold front extending southward into the region. Surface heating and gusty south winds will bring 60s F dewpoints into the area with up to 1000 J/kg MUCAPE expected. Relatively warm profiles will develop near 300 mb, somewhat limiting storm depth. However, ample midlevel cooling will still support sufficient destabilization. Strong deep-layer shear and backed surface winds ahead of the cold front will favor low-topped supercells. Cells should develop over northern NY by 18Z, and will move quickly east, producing marginal hail and sporadic damaging gusts initially. The low EL height may mitigate hail production somewhat. By late afternoon, a tornado or two will be possible as storms encounter a stronger SRH environment farther east. Parts of MS/AL/GA/FL Wind fields associated with the remnants of Arthur will increase from LA into GA today, as a weak surface low and midlevel wave move across MS/AL/GA. This system will provide a focus for storms which will spread northeast out of LA/MS into AL, the FL Panhandle, and eventually into GA. Although temperatures aloft are warm, areas of strong low-level shear and mid 70s F dewpoints will support organized bands of storms, some with embedded stronger cells. Transient supercells will be possible with localized tornado risk. Storms are likely to be ongoing over southeast LA and southern MS at the start of the period, and these will develop northeastward throughout the day. OK into northwest TX An east-west oriented cold front will move southward across the TX Panhandle, Oklahoma and northwest today, pushing well south of the stronger westerlies aloft over the central Plains. The air mass ahead of the front will feature 70s F dewpoints, while daytime heating brings MUCAPE values into the 3000-4000 J/kg range. South of this cold front, low pressure is forecast to develop over western TX where the strongest heating will occur. Isolated morning thunderstorms may be present from the KS/OK border area eastward toward the Ozarks, and marginal hail cannot be ruled out due to substantial elevated CAPE. Any storms that form near the boundary as it moves south during the day may produce locally strong gusts. The greatest risk of locally severe gusts or marginal hail appears to be across southwest OK into northwest TX, where the front will be more favorably timed with peak heating. Shear will be weak, but extensive outflow is possible.