『Chicago Storm Alert: Severe Thunderstorm Threat — July 2-4, 2026』のカバーアート

Chicago Storm Alert: Severe Thunderstorm Threat — July 2-4, 2026

Chicago Storm Alert: Severe Thunderstorm Threat — July 2-4, 2026

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Chicago Storm Alert: Severe Thunderstorm Threat July 2-4, 2026Weather With Enthusiasm — Special EpisodeA deep meteorological breakdown of the thunderstorm threat facing Chicago and northern Illinois over the next 48 hours — sourced directly from the NWS Chicago Area Forecast Discussion (3:15 PM CDT, July 2), the NWS Hazardous Weather Outlook (3:24 PM CDT, July 2), the SPC Day 1 Convective Outlook (3:00 PM CDT, July 2 — forecaster Squitieri), and the SPC Day 2 Convective Outlook (12:17 PM CDT, July 2 — forecaster Jewell).━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━TONIGHT — THURSDAY JULY 2 (after 8-9 PM CDT)━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━• SPC Day 1: MARGINAL Risk for Chicago | SLIGHT Risk for Milwaukee/WI corridor• HWO: Level 1 of 5 Damaging Wind Risk (up to 60 mph) | Level 1 of 5 Large Hail (up to quarter size) | Limited Flooding Risk• Storm type: MCS (Mesoscale Convective System) traversing WI/IL border• Key threats: Wet microbursts, DCAPE >1,000 J/kg, elevated PWATs• Flash flood scenario: Training convection possible if cold pools merge across far northern Illinois• Storm spotters activated• Activity wanes after ~4 AM Friday━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━FRIDAY JULY 3 — THE BIGGER EVENT (1 PM–7 PM CDT)━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━• SPC Day 2: SLIGHT Risk for Chicago — one category higher than tonight• HWO: Level 2 of 5 Severe Thunderstorm Risk (Elevated) | Limited Flooding Risk• Driver: More potent upper-level shortwave crossing northern Arizona Thursday → reaches northern IL/southern WI Friday afternoon• Environment: Dew points solidly mid to locally upper 70s°F | Uncapped air mass | Modest deep-layer shear• Storm mode: Potential line or multicell clusters traversing northern IL into NW Indiana• Primary threat: Damaging wind gusts• Extreme Heat Warning extended until 7 PM Friday for areas near/south of Kankakee River (Day 5 of heat wave)• Possible improvement Friday evening — watch 5 and 7 PM NWS updates for fireworks forecast━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━SATURDAY — INDEPENDENCE DAY (July 4)━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━• HWO: Level 1 of 5 Severe Thunderstorm Risk | Limited Flooding Risk• Storm location highly uncertain — range from southern Wisconsin to southern Illinois• Mid-level wave may slow/stall over western Great Lakes• Many dry hours expected between rounds• Heat index near 95-100°F near/south of I-80━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━SUNDAY JULY 5━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━• HWO: Limited Thunderstorm Risk — no elevated severe parameters• Drier, somewhat cooler conditions expected by mid-week━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━KEY TECHNICAL TERMS EXPLAINED━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━• PWAT (Precipitable Water): Total atmospheric moisture column — high values = heavy rain potential• DCAPE (Downward CAPE): Energy available for damaging downdrafts — >1,000 J/kg = significant• Wet Microburst: Downburst driven by precipitation weight + evaporation — 60+ mph surface gusts possible• MCS (Mesoscale Convective System): Large organized cluster of thunderstorms• Outflow Boundary: Gust front of cold air pushed ahead of storm clusters• Training Convection: Multiple cells repeatedly crossing same area — flash flood setup• HREF: High Resolution Ensemble Forecast — blended high-res model output• Shortwave: Ripple of energy rotating through the jet stream that triggers convection• Zonal Flow: Jet stream flowing straight west-to-east, embedding smaller shortwavesSources: NWS Chicago (weather.gov/chicago) | Storm Prediction Center (spc.noaa.gov)Morning forecasts at 7 AM every day on Spreaker. Historical weather deep-dives every Tuesday and Thursday.$5/month supports this broadcast — spreaker.com/podcast/weather-with-enthusiasm--4911017/support#Chicago #SevereWeather #Thunderstorms #NWS #SPC #WeatherWithEnthusiasm #July4th #StormAlertWeather with Enthusiasm is produced by Kol Simcha Productions.New episodes drop daily (B'N)— a morning forecast at 7 AM and historical deep dives Tuesdays and Thursdays. Contact: kolsimchaproductions@outlook.comHistorical content is thoroughly researched and factually verified. After it has been factually verified it often will say so in the description. Should you find any mistakes, please email kolsimchaproductions@outlook.com so we can look into it and correct it. Not affiliated with any government agency...
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