(Gene J. Puskar / AP)

Update at 11:12 a.m. EDT

The storm has passed through Ardmore, Pa., and golfers and spectators have returned to the Merion course, where play in the U.S. open is scheduled to resume at 12:10 EDT.

The first round was delayed about 3 1/2 hours, with roughly one-third of the field managing to begin play. More storms are forecast for the afternoon, though, so we’ll see how long play lasts.

Ian Poulter is the early leader at 3-under over the first three holes. Tee time for the Tiger Woods-Rory McIlroy-Adam Scott group was moved back to 4:48 p.m.

Original post

Play in the U.S. Open has been suspended, with officials moving spectators and golfers to safety ahead of a severe storm that is approaching Merion Golf Club in Ardmore, Pa..

Warning horns sounded at 8:36 a.m. EDT with high winds, hail and storms expected to strike the area after 9 a.m.

Play isn’t likely to resume quickly after the first wave of what is expected to be a day of storms passes because the Ardmore, Pa., course is prone to flooding. The East Course at Merion has two low-lying holes, 11 and 12, that are near creeks and flood easily. The Ardmore, Pa., area has had over 6 inches of rain the last week.

Weather will complicate matters for spectators in another respect: Merion is a tiny course and rain checks won’t be easy to deal with.

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Viewer’s guide

It could get messy at Merion