Above Average Temperatures for Most Today; Winter Weather Returns to the Upper Midwest and Great Lakes

Well above average temperatures are forecast today into Wednesday over most of the lower 48 states away from the Gulf Coast. A storm system passing across southern Canada will bring a wintry mix to the upper Great Lakes today. A trailing cold front will then bring the wintry mix from the central Appalachians through the Northeast U.S. Wednesday and Thursday. Read More >

Overview | Maps | Storm Reports/Damage Survey | Discussions

General Overview

	What:	Isolated thunderstorms developed during the late afternoon and evening hours ahead of a storm system that was moving southeastward across eastern Iowa and Illinois. The strongest of these thunderstorms produced large hail and strong gusty winds.
	When:	late afternoon and evening hours on July 13, 2015
	Rainfall Amounts:	A few hundredths to three quarters of an inch
	Hail Sizes:	nickel to softball
	Wind Speeds:	50 to 60 MPH
	Hardest Hit Areas:	Calamus. Grand Mound, and LeClaire Iowa as well as Geneseo Illinois for hail. Memphis and Rutledge Missouri as well as Hennepin Illinois for wind gusts.

Overview | Maps | Storm Reports/Damage Survey | Discussions

Maps

Local Rainfall (Created by 11am. Click to enlarge.)	Regional Rainfall (Click to enlarge.)

Local Storm Reports (Click for interactive display.)	Radar (Click to enlarge and loop.)

Overview | Maps | Storm Reports/Damage Survey | Discussions

Preliminary Local Storm Reports - Courtesy of the Iowa Environmental Mesonet (IEM)

Pictures

Pictures of hail and hail damage in Calamus Iowa

Rainfall Reports (RTPDVN - LCODVN) - Courtesy of the Iowa Environmental Mesonet (IEM)

Max/Min Temperature and Precipitation Table - (available ~845 am 07/14)

CoCoRaHS Precipitation Summary - (available ~945 am 07/14)

Overview | Maps | Storm Reports/Damage Survey | Discussions

Pre-Event Discussions - Courtesy of the Iowa Environmental Mesonet (IEM)

Below are links to the most recent Hazardous Weather Outlook, Area Forecast Discussion, SPC Day 1 Outlook, and
SPC Mesoscale Discussion before the event began.

Hazardous Weather Outlook - 07/13 04:28 am

Area Forecast Discussion - 07/13 01:38 pm

Mesoscale Discussion 1394

Day 1 Convective Outlook

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Above Average Temperatures for Most Today; Winter Weather Returns to the Upper Midwest and Great Lakes

Severe Thunderstorms July 13, 2015 - Event Summary