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Archives for Chicago's hourly weather data updated 24-48 hours after end of each day. MOBILE CHGOWX.COM ...
Weather conditions on bar directly above are near Lakefront. Weather conditions with Moon are O'Hare (official).

Friday, May 21, 2021

SPC May 22, 2021 0100 UTC Day 1 Convective Outlook

SPC 0100Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0804 PM CDT Fri May 21 2021 Valid 220100Z - 221200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER PORTIONS OF THE CENTRAL HIGH PLAINS... ...SUMMARY... A few severe storms are expected across northeast Colorado and the Nebraska Panhandle tonight. Large hail and gusty winds are the primary risks. Upper-level low pressure centered over NV early this evening remains nearly stationary, with 40-50 kt southwesterly mid-level flow across the central/southern High Plains. Isolated strong/occasionally severe thunderstorms were in progress in the vicinity of a slow-moving front across the NE Panhandle, and southward along a surface trough/dryline extending southward into eastern NM. Refer to MCD 697 for the latest short-term details for Severe Thunderstorm Watch 192. Weak/pockets of moderate surface-based instability and convergence in the vicinity of the front/surface trough will contribute to a continued risk for isolated severe storms tonight across the central/southern High Plains with large hail and damaging gusts the primary hazards. Across southeast TX/southwest LA, some increase in showers/thunderstorms is possible late tonight as an area of low pressure over the western Gulf of Mexico moves inland. RAP forecast soundings towards 08-12z suggest weak instability along with curved low-level hodographs favorable for rotation and some risk for a tornado. Removed Marginal Risks across the upper Midwest and over portions of eastern ID/western WY as the severe risk in these areas appears minimal the remainder of tonight. ..Bunting.. 05/22/2021 Read more LIVE: spc.noaa.gov
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