Dangerous Heat in the Southwest; Severe Thunderstorms from the Central Plains into the Ohio Valley

Dangerous heat will build across the Southwest U.S. through the end of the week with daytime highs of 110-115°F. Isolated to widely scattered severe storms are expected across parts of the central and southern High Plains, Great Lakes into the Ohio Valley, and parts of the Ozarks to Lower Mississippi Valley today. Read More >

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National Weather Service Chicago, IL
Weather Impact Matrix for MDW Midway Airport
Valid: 09/24/2023 06 PM - 09/25/2023 04 AM CDT
Call 1-815-834-0651 for additional weather support

	Sun 09/24 6 PM	Sun 09/24 7 PM	Sun 09/24 8 PM	Sun 09/24 9 PM	Sun 09/24 10 PM	Sun 09/24 11 PM	Mon 09/25 12 AM	Mon 09/25 1 AM	Mon 09/25 2 AM	Mon 09/25 3 AM	Mon 09/25 4 AM
Temperature	71°F	71°F	70°F	69°F	69°F	68°F	67°F	66°F	66°F	65°F	64°F
Wind Chill	71°F	71°F	70°F	69°F	69°F	68°F	67°F	66°F	66°F	65°F	64°F
Wind Speed	8 mph	6 mph	5 mph	5 mph	5 mph	5 mph	6 mph	6 mph	6 mph	8 mph	8 mph
Wind Direction	80	80	80	90	100	100	120	130	130	130	130
Wind Gust	12 mph	11 mph	9 mph	8 mph	8 mph	8 mph	9 mph	9 mph	9 mph	10 mph	9 mph
Chance of Precipitation	2%	8%	11%	15%	20%	20%	20%	20%	20%	19%	19%
Weather	None	None	None	Rain	Rain	Rain	Rain	Rain	Rain	Rain	Rain
Sky Cover	71%	69%	66%	64%	65%	64%	59%	57%	55%	61%	62%
Lightning Activity Level	1	1	1	1	1	1	1	1	1	1	1

Issued: Sunday September 24, 2023 06:05 PM CDT

Threat Level	None	Limited	Elevated	Significant	Extreme
Temperature	≥100 °F	100 to 96 °F	95 to 91 °F	90 to 86 °F	≤85 °F
Wind Chill	≥105 °F	105 to 101 °F	100 to 96 °F	95 to 91 °F	≤90 °F
Wind Speed	≤20 mph	20 to 24 mph	25 to 29 mph	30 to 39 mph	≥40 mph
Wind Gust	≤30 mph	30 to 34 mph	35 to 44 mph	45 to 59 mph	≥60 mph
Chance of Precipitation	≤15 %	15 to 24 %	25 to 54 %	55 to 74 %	≥75 %
Sky Cover	≤20 %	20 to 39 %	40 to 59 %	60 to 79 %	≥80 %
Lightning Activity Level	≥5	5 to 5	4 to 4	3 to 3	≤2

Note -

Grey color indicates no thresholds assigned

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Dangerous Heat in the Southwest; Severe Thunderstorms from the Central Plains into the Ohio Valley

MDW NWS Chicago Forecast Matrix