The risk of torrential downpours is in the offing for Churchill Downs as we move closer to the 138th Annual Kentucky Derby.
The Louisville area remained in a zone of midsummer warmth much of this week with high temperatures well into the 80s to near 90.
However, it appears drenching downpours and locally gusty thunderstorms are about to make their move with the potential for muddy conditions at race time.
The warmth and humidity have made the atmosphere ripe and capable of unleashing torrential downpours.
**During the middle of the afternoon, severe thunderstorms were approaching Louisville, prior to the start of the Kentucky Oaks.**
This is the current radar, centered on Louisville, Ky.
Around Louisville, the greatest risk of repeating downpours and locally gusty thunderstorms with hail and frequent lightning will come late today into Saturday midday as one or more disturbances roll in from the Plains along a southward sagging front.
While rainfall with summer weather showers and thunderstorms is often chaotic, there is the potential for 1 to 3 inches of rain at the local level during this period.
Essentially, if the Louisville gets under the "sweet spot" of the storms, it can be clobbered with flooding downpours.
According to the Louisville National Weather Service, it has rained on 63 of the 137 Derby Days (46 percent). The wettest day was May 11, 1918, when 2.31 inches of rain fell.
Indications are that the core of the rainfall will tend to shift to the south of the area during the afternoon and evening Saturday. However, there can still be stray storms and downpours left behind the main mess.
Because of the extent of the clouds, showers and thunderstorms around during the first part of the day Saturday and breaks of sun later in the afternoon, we expect temperatures to rebound into the middle 80s for the run for the roses.
The position of the front and the zone of showers and thunderstorms will be critical for timing the rain in the Louisville area and throughout the Ohio Valley. Keep checking in at AccuWeather.com for the latest forecast and radar.
This story was originally published at 10:00 a.m. CDT Thursday, May 3, 2012, and has been updated.
A tornado touched down and wreaked havoc at Cherrystone Campground in Virginia on Thursday morning, causing two fatalities and leaving 36 injured.
Former Typhoon Matmo continues to wreak havoc across portions of China.
Stormy weather will be the theme for the weekend across the Midwest and Ohio Valley with several chances for severe thunderstorms.
After temperatures briefly climb to typical midsummer levels, another cooldown will roll into the Midwest and expand to the East for the last part of July.
Just when it was starting to feel like the dog days of summer again, Pittsburgh will get another early taste of September Friday.
An Air Algerie flight carrying 116 people disappeared from radar as it traveled from Burkina Faso to the Algerian capital, The Associated Press reported, as storms pushed south of the area of lost contact.
Southern California (1996)
7-10 foot swells on the beaches from a powerful storm south of Tahiti. Life guards had to make more than 500 rescues due to the rough surf.
Los Angeles, CA (1891)
Heat wave; 109 degrees.
Off New England (1956)
The Andrea Doria, weighing 29,000 tons was rammed by Swedish liner Stockholm, weighing 12,644 tons, near Nantucket Lightship, MA. Andrea Doria was moving westward through fog while the Stockholm moving eastward in clear weather. Andrea Doria emerged from the fog across bow of Stockholm. Andrea Doria sank 12 hours later; 51 killed by impact or drowned before or during rescue attempts.