CHEYENNE, Wyo. — The National Weather Service in Cheyenne issued a warning for severe thunderstorms this afternoon and evening, affecting the northern Nebraska Panhandle and parts of east-central Wyoming, including Converse and Niobrara counties. The storms are likely to bring large hail and damaging winds.
This morning, dense fog covered areas from Sidney to Pine Bluffs along Interstate 80, prompting a dense fog advisory until 8 a.m.. The advisory aims to caution drivers about reduced visibility.
A cold front from a surface low in southeast Montana will move east, reaching areas near Lusk and east of Cheyenne by early afternoon and bringing severe weather conditions. Meteorologists forecast that storms will start forming along the front around 1 p.m. and continue through the evening.
Dew points in the mid-60s indicate a moist atmosphere, with Cheyenne reporting 57 degrees, Wheatland 63 and Douglas 56. This moisture will fuel thunderstorms, leading to large hail and strong winds. The NWS in Cheyenne warns of potential flash flooding due to high atmospheric moisture levels.
By evening, the cold front will push the storms into the Nebraska Panhandle, ending severe weather for southeast Wyoming. However, any rain-soaked areas may experience fog tonight as winds shift northeast behind the front.
Tuesday’s weather will shift focus to northeastern Wyoming and southwestern South Dakota, with showers likely in Converse and Niobrara counties. The region can expect drier and warmer conditions on Wednesday, with increased fire weather risks.
Temperatures on Wednesday will be high, with low humidity levels across southeast Wyoming. Winds at 700 millibars will reach 30–40 knots, creating conditions favorable for wildfires. The NWS in Cheyenne may issue fire weather warnings within the next day.
Forecast for Independence Day
An upper-level trough will bring cooler temperatures and increased precipitation chances by Thursday. Highs will range from the mid-70s to low 80s. The weather will be breezy with northwesterly winds. Independence Day looks mostly dry and cooler, making for pleasant conditions across the region.
The weather pattern will remain consistent on Friday, with similar temperatures and low chances of showers. The northwest flow will persist through the weekend, bringing warmer temperatures into the 80s and 90s.
Detailed Forecast for Cheyenne
- Today: There is a 40% chance of showers and thunderstorms, mainly between 2 and 5 p.m. The day will be mostly cloudy, with a high near 86. It will be breezy, with a west wind between 10 and 20 mph.
- Tonight: There is a 20% chance of showers and thunderstorms after 10 p.m. The night will be mostly cloudy, with a low around 54. A west wind at 5–15 mph will shift to the north after midnight.
- Tuesday: There is a chance of showers, with thunderstorms also possible after noon. The day will be mostly sunny, with a high near 80. A west-northwest wind will blow at 10–15 mph. The chance of precipitation is 30%.
- Tuesday Night: The night will be mostly clear, with a low around 50. A west-southwest wind will be between 5 and 15 mph.
- Wednesday: There is a 20% chance of showers and thunderstorms after noon. The day will be sunny, with a high near 87. A south-southwest wind will blow at 5–15 mph.
- Wednesday Night: The night will be mostly clear, with a low around 50. It will be breezy.
- Independence Day: The day will be sunny, with a high near 78. It will be breezy.
- Thursday Night: The night will be mostly clear, with a low around 46. It will be breezy.
- Friday: The day will be sunny, with a high near 79.
- Friday Night: The night will be mostly clear, with a low around 50.
- Saturday: The day will be sunny, with a high near 87.
- Saturday Night: The night will be mostly clear, with a low around 52.
- Sunday: The day will be sunny, with a high near 85.
