Cold Front Moving Through the Northeast U.S. Monday; Atmospheric River to Impact the Pacific Northwest Midweek

A cold front will cross the Great Lakes and Northeast U.S. through Monday with gusty winds and areas of rain showers. A strong atmospheric river is expected to move into the Pacific Northwest by midweek bringing a threat for moderate to heavy rainfall, gusty winds, and mountain snows for parts of Washington, Oregon, northern California, and the Sierra Nevada. Read More >

Overview

The 2018 Kentucky Derby in Louisville will go down as the wettest ever. 3.15" of rain was recorded at Louisville International Airport on May 5, shattering the previous wettest Kentucky Derby and the daily record for May 5.

Record Rainfall in Louisville during 2018 Kentucky Derby

Flooding
Radar
Environment

Flooding


South Fork Beargrass Creek gage near Audubon Park	South Fork Beargrass Creek near Germantown	Flooding on ramp for I-64/I-264

Radar and Rainfall Totals:

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Louisville metro 24 hr precip	Forecast Area 24 hour precip	Radar Loop 2 pm to 5 pm EDT

Environment

The environment supported some heavy rainfall with Precipitable Water (PWAT) values highest across the TN and lower OH Valleys.


Figure 1: 19z Precipitable Water (PWAT)	Figure 2: 19z 850 mb moisture transport	Figure 3: 19z Upwind Propagation Vector

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Cold Front Moving Through the Northeast U.S. Monday; Atmospheric River to Impact the Pacific Northwest Midweek

2018 Kentucky Derby Wettest Ever