Heavy Snow and Disruptive Ice in the Upper Midwest; Severe Thunderstorms in the Southern Plains

A late season winter storm will produce a combination of heavy snow and disruptive ice starting this evening in the Northern Plains and moving into the Upper Midwest and Great Lakes by tonight continuing through Thursday. Severe thunderstorms will likely produce severe wind gusts, large hail, a few tornadoes, and heavy rainfall across the southern and central Plains today. Read More >

Overview

Two tornadoes occurred in Huntingdon County, PA on May 27th, 2011.

Tornado
Photos & Video
Radar

Tornadoes:

Tornado - Trough Week
Huntingdon County

Date	05/27/2011
Time (Local)	5:10 pm EDT - 5:15 pm EDT
EF Rating	EF1
Est. Peak Winds	100 mph
Path Length	3.71 miles
Max Width	300 yards
Injuries/Deaths	0/0
Summary: The tornado touched down about 1 mile north of Middletown, just west of Little Valley Road. It tracked northeast for about 3 1/2 miles to a final location about 4 miles north-northeast of Middletown. It crossed Little Valley Road twice. Damage was limited to trees, but a few cabins and summer homes sustained light damage to roofs and decking.

Track Map

Tornado - Calvin
Huntingdon County

Date	5/27/2011
Time (Local)	5:30 pm EDT - 5:34 pm EDT
EF Rating	EF1
Est. Peak Winds	95 mph
Path Length	2.72 miles
Max Width	100 yards
Injuries/Deaths	0/0
Summary: The tornado touched down just south of Calvin just east of Route 829 around 5:30 pm EDT. The tornado ran parallel to State Route 829 for it's length, and possibly crossed the road several times. Damage was mostly confined to trees. About 75 trees were snapped or uprooted. One large shed was destroyed on a farm. Significant peel-back of tin roofing material was noted on a large barn. One home near the end of the tornado track had significant tree damage. Portions of the deck around house was damaged by falling trees.

Track Map

The Enhanced Fujita (EF) Scale classifies tornadoes into the following categories:

EF0 Weak 65-85 mph	EF1 Moderate 86-110 mph	EF2 Significant 111-135 mph	EF3 Severe 136-165 mph	EF4 Extreme 166-200 mph	EF5 Catastrophic 200+ mph