Genesis WX

The Storm Prediction Center has issued a Level 3 (Enhanced Risk) for severe weather across parts of Illinois on Wednesday, June 17.

While the exact placement of the risk area may change over the next several days, confidence is increasing that a highly favorable environment for severe thunderstorms will develop across much of the state. A frontal boundary is expected to stall over Illinois before gradually lifting northward on Wednesday. South of this boundary, a combination of unusually strong wind shear and abundant instability will create conditions supportive of organized severe storms.

Current indications suggest an all-hazards severe weather event, including the potential for damaging winds, large hail, and tornadoes. Storm modes may include both discrete supercells and bowing segments/lines of storms as activity moves across the region.

The exact position of the frontal boundary will play a key role in determining where the most significant severe weather occurs. As a result, additional adjustments to the highest-risk area are likely in the coming days. Residents across Illinois should continue to monitor forecasts and be prepared for updates as confidence in storm placement increases.

Multiple rounds of thunderstorms with heavy rainfall may pose a flash flooding risk across parts of our area through tonight. Most areas stand a good chance at receiving at least 1/2 inch, but some areas may receive over 2" in a short period of time which may lead to flooding issues.

Today's forecast remains a difficult one, with uncertainty continuing around thunderstorm development later this afternoon. Scattered storms are expected to redevelop across portions of the area, and a few could become severe. Damaging wind gusts remain the primary concern, although large hail and localized flooding cannot be ruled out. While the tornado threat appears low at this time, it is not completely off the table.

Forecast guidance continues to show significant differences regarding the exact timing and location of storm initiation, making today's forecast especially challenging. We'll be closely monitoring radar and observational trends throughout the day and will provide updates as conditions evolve.

There is some encouraging news regarding the overnight period. Recent model guidance has shifted the anticipated overnight storm complex farther west, suggesting the highest threat may remain outside of our immediate area. However, this does not completely eliminate the possibility of additional storms overnight, and we'll continue to watch trends closely.

Stay weather aware through the day and have multiple ways to receive warnings if they become necessary. We'll keep you updated with the latest information as it becomes available.

Below is our latest radar scan showing storms advancing eastward from the west this morning.

Models are continuing to hint at some sneaky tornado potential tomorrow afternoon (1 PM–7 PM) across the shaded area below.

While this remains a conditional threat, the ingredients for a few tornadoes may come together if storms can develop and mature within the forecast environment. Given current trends, I wouldn't be surprised to see the Storm Prediction Center increase the tornado risk in a later outlook tonight.
The image below shows the latest HRRR simulated reflectivity, which depicts supercell structures developing within an atmosphere that could become supportive of tornadoes.

For now, confidence is not high enough to sound the alarm, but it is definitely a situation worth monitoring closely. Stay weather aware tomorrow afternoon and be prepared to act if storms become more organized than currently expected.

GENESIS WX EARLY OUTLOOK — WEDNESDAY, JUNE 17

Wednesday, June 17th has our attention based on the latest forecast trends.
Current guidance suggests a synoptic pattern that resembles a classic northwest flow/warm frontal severe weather setup across portions of Illinois, including the possibility of southern Illinois. While there is still considerable uncertainty at this lead time and many details remain to be worked out, the overall pattern bears watching as it has similarities to early June environments that can support tornadic supercells.

It's far too early to determine specific timing, storm modes, or exact areas of greatest concern, but we wanted to provide an early heads-up that this period is on our radar. Forecast details will likely evolve over the coming days, and confidence in impacts may increase or decrease as new data becomes available.
As always, now is a good time to review your severe weather safety plan, ensure multiple methods of receiving warnings are available, and check that your preparedness kits are up to date.

Stay with Genesis WX for continuing forecast updates as we monitor this developing setup.

Thunderstorms are expected on Saturday, some of which could be severe especially during the evening across Missouri. There is still uncertainty in the forecast, so monitor the latest forecast but have ways to receive warnings.

SEVERE WEATHER POSSIBLE TOMORROW (SATURDAY 6/13)

Multiple rounds of strong to severe thunderstorms are possible Saturday afternoon through the overnight hours. While there is still some uncertainty regarding the exact timing and evolution of the storms, current indications suggest an initial round of more isolated storms could develop during the early afternoon, followed by a more organized and widespread line of storms between roughly 9 PM and 3 AM.

Forecast details remain somewhat uncertain and will likely continue to change as new data becomes available. We will provide updates as confidence increases. Damaging winds, large hail, and a few brief spin-up tornadoes are all possible with this system.

Stay weather aware and stay tuned for further updates.

Good morning, everyone. Today will bring a welcome break from the recent heat, humidity, and severe weather. The quieter conditions will provide an opportunity for cleanup efforts to continue and allow utility crews to restore power to residents still dealing with storm impacts.

Looking ahead, our next chance for strong to severe thunderstorms arrives Saturday evening and overnight. The primary concern across Illinois will be damaging wind gusts, with some hail also possible. At this time, the tornado threat appears very low, but we'll continue to monitor the latest trends and provide updates as needed. Stay weather-aware and enjoy today's much-needed stretch of calmer weather.

A broken line of showers and storms will sink southeastward across the region overnight. The overall environment doesn't support widespread severe storms, but we certainly may have a few that intensify and producing damaging winds in excess of 60 mph. Storms should clear our west Kentucky counties by 7 AM or shortly thereafter.

A line of strong thunderstorms is expected to move into the area around midnight tonight. These storms may produce wind gusts up to 45 mph and small hail. While widespread severe weather is not expected at this time, brief periods of heavy rain, gusty winds, and hail could create hazardous travel conditions overnight.

Residents are encouraged to secure loose outdoor items and remain weather-aware tonight.