Weather Alerts For Clarksville, TN
Severe Storm Risk
-There is a Marginal 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 OVER THE UPPER OHIO VALLEY INTO PARTS OF WESTERN NEW YORK...PENNSYLVANIA...AND WEST VIRGINIA...AND OVER MUCH OF TEXAS INTO THE LOWER MISSISSIPPI VALLEY SUMMARY Scattered severe thunderstorms are likely from Saturday morning into the evening across over parts of Ohio into West Virginia and western Pennsylvania and New York, and from much of Texas into the lower Mississippi Valley. Synopsis A positive-tilt shortwave trough will sweep across the upper MS Valley and Great Lakes today, while a surface low pivots northeast from the Great Lakes into Quebec. A cold front will extend southwestward from the low, extending from northwest OH into southeast TX by 00Z. To the east, a warm front will lift north across VA and into western NY and PA during the day. Ahead of the cold front, a plume of 60s F dewpoints will extend from TX into IN and OH, with mid to upper 60s F across the lower MS Valley and 70 F dewpoints near the Gulf Coast. East of the Appalachians, lower 60s F dewpoints will develop northward as far north as VA, MD and DE. Shear will be maximized from the Ohio Valley into the northeast in association with the upper trough, with the greatest relative severe potential there. OH Valley into western NY/PA/WV Height falls will occur during the day across the region, with increasing wind speeds and shear. Daytime heating and southwest surface winds will lead to sufficient instability to support afternoon severe storms from parts of the OH Valley northeastward into western NY/PA. Here, lift and low-level shear will be accentuated along the warm front, possibly supporting a few supercells with attendant tornado risk just ahead of the cold front. Otherwise, 40-50 kt mean wind speeds just off the surface, in combination with linear forcing along the advancing front will favor wind damage. TX into the Lower MS Valley Showers and thunderstorms will likely be ongoing near and north of the cold front as it plunges south through the period. Given mid to upper 60s F dewpoints ahead of the front, substantial elevated instability will remain well north of the boundary as well as ahead of it. Sufficient mid to high level shear may aid hail production with cells even as they are undercut. Otherwise, any convection forming ahead of the front may also produce strong wind gusts, aided by modest southwest winds in the lower few km.