Heavy Rainfall Possible in the Upper Midwest, South Texas, and Puerto Rico and the Virgin Islands

Scattered thunderstorms and heavy rainfall may bring areas of flooding though the weekend over the Upper Midwest. A tropical disturbance will bring moderate to locally heavy rain to portions of South Texas into Saturday. Tropical Storm Erin may bring isolated flash and urban flooding, landslides or mudslides, and tropical storm conditions to Puerto Rico and the U.S. Virgin Islands. Read More >

A Few Funnel Clouds Across the Western Chicago Metro Tuesday Evening, June 24, 2014


Glen Ellyn around 6 pm. Photo courtesy of Norm Ramil.	Oak Brook around 6:15. Photo courtesy of Annie Marie.

ORD Terminal Doppler Weather Radar 1.8° Loop from ~5:30 pm - 6:45 pm

Radar Loop

Note multiple elongated boundaries that intersect and storms that develop on these. The updrafts of these developing storms stretched pre-existing low-level "spin" and helped produce the funnel clouds.

ORD Terminal Doppler Weather Radar 1.8° Storm-Relative Motion indicating rotation near the cloud base level

Radar

Setup

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