textproduct: Springfield

KEY MESSAGES

- Heat Advisory in effect through Friday as daily heat indices climb to around 100 degrees. Little nighttime relief with lows in the middle to upper 70s. These conditions may linger through the Independence Day weekend, so those with outdoor plans to celebrate the holiday should make efforts to have cooling and hydration options readily available.

- Isolated thunderstorms will be possible each afternoon/evening starting Thursday. Currently, coverage/probability is less than 30 percent and confined to locations east of Highway 65. There is potential for localized storms with microburst winds, but confidence is low at this time.

SHORT TERM /THROUGH TONIGHT/

Issued at 245 AM CDT Tue Jun 30 2026

Current Conditions and Synoptic Overview: Water vapor and upper air analysis shows the area on the western periphery of a high pressure cell/mid level ridge located over Kentucky and Tennessee. A warm and humid airmass remains in place across the area as 850mb temps were measured at 23C. While a 60kt low level jet was located over central Kansas, we were on the eastern edge of this with wind gusts around 20mph at times. Surface temps remained in the upper 70s with dews in the low 70s, creating a warm and humid night.

Heat Advisory: The mid level ridge will largely remain in the same place today before a slight eastward movement Wednesday. Mostly clear skies will allow for strong heating and given the warm start and mean 850mb temps around 23C across the region, highs will most likely be similar to previous days with most areas around 90. There will likely be a few areas that again reach the lower 90s. Like previous days, surface dews will most likely stay at least in the 70-75 degree range, even with day time mixing. This will create heat indicies in the upper 90s to low 100s today and Wednesday. A Heat Advisory remains in effect. Wind gusts of 20 to 30 mph will likely be attained again today for locations west of Highway 65 as the low level jet gets mixed down during the morning and afternoon hours.

LONG TERM /WEDNESDAY THROUGH MONDAY/

Issued at 245 AM CDT Tue Jun 30 2026

Heat Advisory: Ensemble guidance continues to suggest that this blocking ridge will remain in place just east of the area through Friday with some potential through Saturday. The Heat Advisory remains in effect through Friday. We will continue to evaluate for any additional extensions into Saturday. We will likely see dews in the 70s through the week which will help keep heat indicies around 100 degrees. The NWS Heat Risk tool has the entire area remaining in the Major category through this week and even Saturday which generally equates to heat related impacts affecting anyone without cooling/hydration as well as health systems and industries. This will be a prolonged period of excessive heat heading into the holiday weekend therefore those spending time outdoors will need to take proper precautions.

Low Rain/Storm Chances: There continues to be a signal that enough moisture may be present for some pulse/isolated afternoon storms Thursday into the weekend however confidence in coverage of any precip is still low. An inspection of ensemble mean soundings suggest increasing moisture aloft which would favor an environment for updrafts/storm potential in the afternoons if convective temps can be reached. These pulse storms most likely would not be widespread however localized microburst winds are common in these setups. Will continue to monitor this potential, especially with numerous outdoor activities this weekend. Precip chances generally remain less than 30 percent at this time.

AVIATION /12Z TAFS THROUGH 12Z WEDNESDAY/

Issued at 533 AM CDT Tue Jun 30 2026

Confidence is high that VFR conditions will prevail through the period with mostly clear skies. Surface winds will be out of the south with increasing gusts this morning and afternoon, especially at JLN where gusts of at least 25kts are likely. Low level wind shear is likely to start and end the TAF period as well at JLN with lesser wind shear further east.

SGF WATCHES/WARNINGS/ADVISORIES

KS...Heat Advisory until 9 PM CDT Friday for KSZ073-097-101. MO...Heat Advisory until 9 PM CDT Friday for MOZ055>058-066>071- 077>083-088>098-101>106.