Severe Thunderstorms and Heavy Rainfall for the Southwest; Heat Spreads Across the Center of the Nation

Moisture will continue to move into areas of the West. This will increase showers and thunderstorms coverage and intensity, with the risk of flash flooding and damaging wind gusts. Meanwhile, heat across the Southwest will expand into the center of the nation this weekend into early next week. Trends favor this heat will spread across the Ohio Valley, mid-Atlantic next week. 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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Severe Thunderstorms and Heavy Rainfall for the Southwest; Heat Spreads Across the Center of the Nation

2018 Kentucky Derby Wettest Ever