As the Pittsburgh region braces for yet another day of tumultuous weather, officials at the National Weather Service in Pittsburgh have issued forecasts anticipating storm chances to persist throughout the Ohio River Valley until a Wednesday cold front brings drier, more seasonable temperatures. According to the latest release from the National Weather Service, the main concern until then is the potential for damaging winds, although "isolated tornadoes and large hail can note ruled out."
Uncertainty in the specific timing and development of these storms remains high, as weak forcing and storm development add a variable into the mix. However, the NWS notes that "if storms remain cold pool-balanced, the tornado threat may be a bit higher, otherwise, winds will remain the primary threat in downbursts with sufficient dry air in the mid levels." Keeping an eye on the evolving conditions, meteorologists are also wary of the heat, with the potential for heat index values to surpass 100 degrees on Tuesday, depending on "convective extent and timing."
Residents looking forward to a reprieve from the muggy heat can expect some relief later in the week. "Drier and cooler pattern will ensue on Thursday and continue into next weekend," assures the NWS. Indeed, with high pressure moving in over the Great Lakes and Northeast CONUS, locals can expect substantially lower humidity levels and a comfortable return to dewpoints in the 50s.
Looking ahead to the weekend, there's a slight chance that showers and storms could reappear. Increased moisture creeping in from the south may cause diurnal shower/storm chances to increase slightly with increased moisture, especially southeast of Pittsburgh. Additionally, a minor warming trend is on the cards through the weekend, coinciding with a rise in area heights in response to troughing over the Central Plains.
For travelers and aviators, the NWS projects that VFR conditions will largely prevail during the day on Tuesday, with some expected SW wind gusts reaching up to 20 knots by mid-morning. Though there's a potential for convective development through the day, Convection should wane Tuesday evening as instability wanes, and with a lack of forcing. Post-Wednesday, with the cold front's passage, VFR will make a consistent appearance through to Saturday under the burgeoning high pressure.
