Weather Alert Day: Triple digit heat arrives Monday

LINCOLN, Neb. (KOLN) - The Severe Weather Center has declared a Weather Alert Day for Monday as dangerously hot and humid conditions move across Nebraska. This will mark the first triple-digit temperatures of the year for most of the state, with feels-like temperatures potentially reaching dangerous levels across the eastern half of the state.

What to Expect This Weekend

Sunday will bring a taste of what’s coming, with highs mid 90s again across central and eastern Nebraska. Western parts of the state will see upper 90s to lower 100s. Skies will be mostly sunny to partly sunny.

A few afternoon showers with possible thunder are possible, mainly along and north of Highway 92 in the northern portions of the state, and in far southeastern areas. However, most of Nebraska should remain dry. Any storms that do develop will be brief and weak, fading around sunset.

By Sunday afternoon, feels-like temperatures will climb into the upper 90s to lower 100s. In eastern Nebraska, heat index values will reach 100 to 105 degrees. Even overnight, relief will be limited — nighttime feels-like temperatures will only drop to around 73 to 77 degrees, making it difficult for your body to cool down during sleep.

Monday: The Hottest Day of the Year So Far

Monday will be the most dangerous day of this stretch. Sunny to mostly sunny skies will dominate, with no rain expected. But the combination of heat and humidity will be oppressive and potentially life-threatening.

Afternoon feels-like temperatures could reach 105 to 110 degrees, particularly in eastern Nebraska. In some areas, actual temperatures will reach 100 to 102 degrees. The combination of hot air and moisture in the air will create wet-bulb temperatures in the 80s and 90s — a measure of how your body experiences heat that’s particularly important for outdoor workers and athletes.

The extreme heat will impact outdoor activities, work conditions, and vulnerable populations. The Severe Weather Center urges residents to:

• Stay hydrated throughout the day — drink water constantly, not just when thirsty
• Check on elderly neighbors and family members, especially those without air conditioning
• Limit outdoor activities during peak afternoon hours (11 a.m. to 6 p.m.)
• Never leave children or pets in vehicles, even with windows cracked
• Seek air-conditioned spaces when possible
• Take frequent breaks if working outdoors
• Watch for signs of heat exhaustion: dizziness, nausea, weakness, or excessive sweating

A Slight Chance of Storms Late Monday

As the day progresses, afternoon clouds and towering cumulus clouds will develop due to the extreme heat. A cold front will push into Nebraska late Monday evening into Tuesday. As this front moves through, there’s a small chance for isolated showers and thunderstorms, particularly in far eastern and northeastern parts of the state, and in the higher terrain of the Panhandle. Any storms that develop will likely be on the downtrend as they move into the area, but localized heavy rainfall and wind gusts up to 45 mph are possible if stronger storms do form.

Relief Arrives Tuesday

A backdoor cold front will push through Nebraska Monday evening into Tuesday, bringing significant relief from the dangerous heat. Temperatures will drop noticeably on Tuesday, with highs in the upper 80s to low 90s across the state — still warm, but much more manageable than Monday.

The Cooldown Continues

Wednesday will feel even more comfortable, with highs in the mid-80s to lower 90s depending on location. Dew points will also drop, making the air feel less oppressive and allowing your body to cool down more effectively, even at night.

Wednesday also brings the best chance for more widespread moisture, with scattered showers and thunderstorms expected, particularly Wednesday evening. Some areas could see light to moderate rainfall.

Thursday will stay cool with highs in the mid-80s to lower 90s. More showers and thunderstorms will continue through early Friday as a series of weather disturbances move across the region, though confidence in exactly where and when rain will fall remains lower at this range.

Heat Returns by Weekend

Don’t get too comfortable with the cooler weather. Temperatures will begin warming again heading into next weekend. Highs will climb back into the lower to middle 90s by next weekend as high pressure builds back into the region.

Long-range forecasts from the Climate Prediction Center suggest warmer-than-normal temperatures will persist through the end of July. The Weather Prediction Center’s 8 to 14-day hazard outlook has much of Nebraska highlighted for a slight to moderate risk of excessive heat.

Stay with the Severe Weather Center for updates as conditions develop. Download our weather app for real-time alerts and the latest forecast information.

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