The heat continues along and east of the Mississippi River. The most significant cumulative heat impacts are expected across the Mid-Atlantic through today and eastern Ohio Valley through Friday. Severe weather and heavy rainfall potential from the Southwest, Plains, upper Midwest, Great Lakes, mid-Atlantic and Northeast the next couple of days. A disturbance near the Marianas may bring flooding. Read More >
Overview
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Scattered showers and thunderstorms developed across much of eastern IA, northwest IL and northeast MO on the afternoon and evening of October 9th. This was due to a strong cold front and associated low pressure system advancing eastward across west central IA. Several supercells developed, with one producing a confirmed tornado near Blairstown, IA in Benton county. Other storms produced hail up to penny size, locally heavy rainfall, and brief funnel clouds.
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 Radar Image: Tuesday 10/9 5:00 pm |
Tornado:
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1 SE Blairstown, Iowa
Track Map
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The Enhanced Fujita (EF) Scale classifies tornadoes into the following categories:
| EF0 Weak 65-85 mph |
EF1 Moderate 86-110 mph |
EF2 Significant 111-135 mph |
EF3 Severe 136-165 mph |
EF4 Extreme 166-200 mph |
EF5 Catastrophic 200+ mph |
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Rain Reports
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Local Rainfall Map
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Regional Estimated Rainfall
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Environment
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| Figure 1: SPC Day 1 Outlook (200z) | Figure 2: SPC Day 1 Tornado Outlook (200z) | Figure 3: SPC Day 1 Wind Outlook (2000z) | Figure 4: SPC Day 1 Hail Outlook (2000z) |
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| Figure 5: DVN Sounding 10/9/18 12z | Figure 6: DVN Sounding 10/10/18 00z |
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| Figure 7: SPC Mesoscale Discussion #1550 (see link for details) | Figure 8: SPC Mesoscale Discussion #1553 (see link for details) | Figure 9: SPC Mesoscale Discussion #1555 (see link for details) |
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