The Cheyenne Office of the National Weather Service has updated its forecast for possible severe weather in southeast Wyoming and the Nebraska Panhandle.

The update includes the following information:

Updated SPC guidance for Severe storm risk on Sunday, May 19

Key Points: ● Morning showers continue, followed by scattered to numerous strong to severe thunderstorms late this afternoon into the evening.

● Large hail greater than quarter-size and 60+ mph winds possible with the strongest storms.

● Heavy rainfall with localized flooding possible with any training storms over the southern Nebraska panhandle. Strongest Storm Timing: 4 PM to 11 PM.

Quarter to golf-ball-sized hail is possible, as are damaging winds of up to 60 miles per hour. A tornado or two is also possible, although a NWS map shows only about a two percent possibility of a twister each in both Cheyenne and Laramie.

Laramie could also see some snow on Tuesday, according to the latest forecast.

Forecasts For Cheyenne and Laramie

Cheyenne Forecast:

Today
A chance of rain before noon, then a chance of showers and thunderstorms between noon and 3pm, then showers and possibly a thunderstorm after 3pm. Some of the storms could be severe. High near 68. Breezy, with an east southeast wind 10 to 15 mph becoming east 20 to 25 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and possibly a thunderstorm. Some of the storms could be severe. Areas of dense fog between 2am and 3am. Low around 37. Breezy, with a north northeast wind 15 to 20 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
A chance of showers before 9am, then a chance of showers and thunderstorms between 9am and noon, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 54. North wind 10 to 15 mph. Chance of precipitation is 70%.
Tuesday Night
Showers likely and possibly a thunderstorm before midnight, then a slight chance of showers and thunderstorms between midnight and 3am, then a slight chance of showers after 3am. Mostly cloudy, then gradually becoming mostly clear, with a low around 33. West wind 5 to 15 mph. Chance of precipitation is 60%.
Wednesday
A slight chance of showers between noon and 3pm, then a slight chance of showers and thunderstorms after 3pm. Sunny, with a high near 64. West northwest wind 5 to 10 mph becoming south in the afternoon. Chance of precipitation is 20%.
Wednesday Night
Mostly clear, with a low around 38.
Thursday
A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 72. Breezy.
Thursday Night
A slight chance of showers before midnight. Partly cloudy, with a low around 38. Breezy.
Friday
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 65. Breezy.
Friday Night
A slight chance of showers before midnight. Partly cloudy, with a low around 40.
Saturday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 70.
Saturday Night
Partly cloudy, with a low around 43.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 70.
Laramie Forecast:
Today
A chance of rain before noon, then a chance of showers and thunderstorms between noon and 3pm, then showers and possibly a thunderstorm after 3pm. Some of the storms could be severe. High near 62. Windy, with a southeast wind 20 to 25 mph increasing to 25 to 30 mph in the afternoon. Winds could gust as high as 40 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and possibly a thunderstorm. Some of the storms could be severe. Low around 36. Windy, with an east wind 20 to 30 mph becoming northeast 5 to 10 mph after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
Rain and snow showers, mainly after noon. Some thunder is also possible. High near 47. West northwest wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Chance of precipitation is 80%. Little or no snow accumulation expected.
Tuesday Night
A chance of rain and snow showers before 10pm, then a chance of snow showers. Some thunder is also possible. Partly cloudy, with a low around 31. West wind 10 to 15 mph. Chance of precipitation is 50%.
Wednesday
A slight chance of showers between noon and 3pm, then a slight chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 59. West southwest wind 10 to 15 mph. Chance of precipitation is 20%.
Wednesday Night
Partly cloudy, with a low around 37.
Thursday
A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 65. Breezy.
Thursday Night
A chance of rain showers before midnight, then a slight chance of rain and snow showers between midnight and 5am, then a slight chance of snow showers after 5am. Partly cloudy, with a low around 33. Breezy.
Friday
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 59. Breezy.
Friday Night
A slight chance of showers before midnight. Partly cloudy, with a low around 36.
Saturday
A chance of showers. Mostly sunny, with a high near 64.
Saturday Night
A slight chance of showers. Partly cloudy, with a low around 40.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 64. Breezy.

Meet the Dinosaurs That Roamed Ancient Wyoming

Discover the mighty dinosaurs that roamed the Cowboy State, featuring information shared by the Geological Museum at the University of Wyoming. Learn about the types of dinosaurs that lived in pre-historic Wyoming, fun facts about them, and more.

Gallery Credit: Phylicia Peterson, Townsquare Media Laramie/Cheyenne

More From KGAB