Historic Heat Wave Grips Virginia with 110°F+ Heat Indices Through Saturday

This evening, the National Weather Service officially upgraded and expanded the weather alerts, placing our entire area under a Rare Extreme Heat Warning from Friday morning through Saturday evening.

This isn't just standard July heat. The NWS noted this afternoon that this prolonged event has the potential to be the most significant heat wave in both magnitude and duration since July 2012.

Here is everything you need to know about what's coming, how hot it will actually feel, and a looming weekend storm threat.

The Big Picture: Heat Index 110°F+ Expected

An anomalously strong upper-level ridge (a massive "heat dome") is parked squarely over the eastern half of the country. This afternoon, temperatures easily climbed into the mid-to-upper 90s.

More importantly, humidity is not dropping. Typically in peak summer heat, the air dries out slightly in the afternoon. That isn't happening. Dew points are staying dangerously high, which has already pushed afternoon heat indices between Richmond and Louisa past 110°F.

Friday looks to be the absolute peak of this stretch as the hot and humid airmass locks completely into place.

Current Heat Alerts

• Extreme Heat Warning: In effect Friday and Saturday for all of central Virginia and the Maryland Eastern Shore. Expect widespread heat indices of 110°F or greater.
• Heat Advisory: In effect Friday for Northeast North Carolina and the Maryland beaches (heat indices of 105°F+).
• Extreme Heat Watch: Issued for Northeast North Carolina (excluding eastern Currituck) for Saturday as the extreme heat expands southward.

Day-by-Day Breakdown

Friday: The Peak of the Heat

Expect blazing sunshine with actual air temperatures soaring between 97°F and 101°F. When combined with the heavy humidity, it will feel like 110°F+ in the afternoon.

Storm Risk: The Storm Prediction Center has a conditional "Marginal Risk" (Level 1 of 5) for a severe storm in northern parts of the area, but overall confidence in storm development Friday afternoon remains very low.

Saturday: Intense Heat + Severe Storm Threat

Actual high temperatures will once again push into the 96°F to 100°F+ range. However, the heat dome will slowly begin to stress and fracture, bringing a much higher threat of thunderstorms.

• Severe Risk: Most of the region (excluding southern VA and NC) has been upgraded to a Slight Risk (Level 2 of 5) for severe weather.
• The Threat: Because daytime heating will create extreme atmospheric instability, any storm that develops will have massive energy to work with. Damaging straight-line winds are the primary threat.
• Flash Flooding: Despite our current dry/drought conditions, these storms will be slow-moving and packed with tropical moisture, meaning localized flash flooding is a real risk in urban and poor-drainage areas.

Sunday: One Last Push

The heat dome continues to break down, but Sunday will squeeze out one final day of intense heat. Highs will still reach the upper 90s, with a few spots flirting with triple digits. Another round of scattered severe storms with damaging wind threats is expected in the afternoon and evening.

No Nighttime Relief

One of the most dangerous aspects of this specific heat wave is how warm the overnights will remain. Take a look at the historical data: the record high minimum temperature for Richmond on July 4th is 77°F (set back in 1900).

Over the next few nights, low temperatures will struggle to drop below the mid-70s. In urban centers, temperatures will likely bottom out between 75°F and 80°F. Without a basement or strong air conditioning, human bodies cannot properly cool down at night during these types of events, which dramatically increases the risk of cumulative heat exhaustion.

Record Highs in Jeopardy

To give you an idea of how close we are to historic territory, here are the standing record high temperatures for Richmond over the next few days. We will be cutting it incredibly close to these benchmarks:

Light at the End of the Tunnel

By Monday and Tuesday of next week, the upper-level wind pattern shifts to the northwest, finally dismantling the heat dome. This transition will likely bring a final round of unsettled showers and storms on Monday, but it will successfully drag a much more seasonable airmass into Virginia.

By Tuesday, we should finally see high temperatures return to the normal upper 80s and lower 90s.

Local Radar Note: The Wakefield NWS radar (KAKQ) is currently down due to a mechanical failure with no immediate return estimate. If storms firing up on Saturday or Sunday track near your neighborhood, rely on surrounding regional radars (like Richmond or Norfolk terminal radars) for tracking.

Please limit outdoor exposure during peak afternoon hours over the next 48 hours, keep your pets inside, and check in on elderly neighbors. Stay hydrated!