Overview
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A line of showers and thunderstorms rolled across southern Wisconsin during the late afternoon and evening hours Thursday, March 23, 2017. This was somewhat unusual as air temperatures were only in the upper 30s to mid 40s when the storms rolled through. Not only was it cold at ground level, there was plenty of cold air aloft and this helped to generate copious amounts of mostly small hail in a few of the stronger storms. Some storms did produce large hail, as much as 1 to 1 1/2" in diameter in a few locations. The hail was so prolific, it left many roads and sidewalks ice covered and slippery through the overnight hours. Plows were even called out in some instances.
Click tabs below to see photos and radar |
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Photos:
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Radar:
The radar loops below were broken down into two .gif animations. One runs from 4 pm to 7 pm, the other 7 pm through about 10 pm. The pair of images depict standard radar reflectivity, or precipitation intensity on the left and MESH on the right. MESH stands for Maximum Estimated Size of Hail. This is a radar estimate of hail size using multiple radars. MESH will highlight where we saw the largest and most accumulated hail.
4 PM through 7 PM
7 PM through about 10 PM
Storm Reports:
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON... ..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE.... ..REMARKS.. 0530 PM HAIL DARLINGTON 42.68N 90.12W 03/23/2017 M0.25 INCH LAFAYETTE WI LAW ENFORCEMENT PEA SIZE HAIL OBSERVED BY DEPUTY SHERIFF. 0556 PM HAIL 6 E MINERAL POINT 42.86N 90.07W 03/23/2017 M1.00 INCH IOWA WI AMATEUR RADIO QUARTER SIZE HAIL, 1 INCH DIAMETER. 0602 PM HAIL 6 WSW BLANCHARDVILLE 42.79N 89.97W 03/23/2017 M1.00 INCH LAFAYETTE WI PUBLIC QUARTER SIZE HAIL...1 INCH DIAMETER. 0615 PM HAIL 4 W ARGYLE 42.70N 89.94W 03/23/2017 M0.50 INCH LAFAYETTE WI LAW ENFORCEMENT DIME SIZE HAIL OBSERVED BY DEPUTY SHERIFF. 0615 PM HAIL 7 SSW SPRING GREEN 43.08N 90.13W 03/23/2017 M0.50 INCH IOWA WI PUBLIC DIME TO MARBLE SIZE HAIL. RELAYED BY IOWA CO. DISPATCH. 0635 PM HAIL BLUE MOUNDS 43.02N 89.83W 03/23/2017 M0.25 INCH DANE WI TRAINED SPOTTER 0.25 INCH - 0.50 INCH HAIL. 0648 PM HAIL MOUNT HOREB 43.01N 89.74W 03/23/2017 M0.75 INCH DANE WI PUBLIC DIME SIZE HAIL...THREE QUARTERS INCH DIAMETER. 0656 PM HAIL 1 SE VERONA 42.98N 89.52W 03/23/2017 M0.50 INCH DANE WI TRAINED SPOTTER 0700 PM HAIL 4 SSW MIDDLETON 43.05N 89.54W 03/23/2017 M0.25 INCH DANE WI TRAINED SPOTTER VIA TWITTER. 0705 PM HAIL VERONA 42.99N 89.54W 03/23/2017 M0.25 INCH DANE WI PUBLIC INTERSECTION OF HWYS 18 AND 151 COVERED IN PEA-DIME SIZE HAIL. RELAYED VIA SOCIAL MEDIA. 0715 PM HAIL STOUGHTON 42.92N 89.22W 03/23/2017 M0.25 INCH DANE WI TRAINED SPOTTER 0715 PM HAIL MADISON 43.08N 89.38W 03/23/2017 M0.25 INCH DANE WI TRAINED SPOTTER EXACT LOCATION UNKNOWN. 0.25 INCH-0.50 INCH HAIL MIXED WITH HEAVY RAIN. STARTED AT 715 PM AND LASTED 5-10 MINUTES. 0719 PM HAIL 3 ENE MONONA 43.08N 89.28W 03/23/2017 M0.25 INCH DANE WI PUBLIC 0.25 INCH - 0.50 INCH HAIL AT INTERSECTIONS OF HWYS 30 AND I-90. SOME HAIL ACCUMULATION. 0730 PM HAIL 3 SSE ROCKDALE 42.93N 89.00W 03/23/2017 M0.75 INCH JEFFERSON WI AMATEUR RADIO 7.5 MILES WEST OF FT. ATKINSON...PENNY TO THREE QUARTERS INCH HAIL. 0739 PM HAIL MIDDLETON 43.10N 89.51W 03/23/2017 M0.75 INCH DANE WI PUBLIC PENNY TO NICKLE SIZE HAIL IN DOWNTOWN MIDDLETON. SOCIAL MEDIA. 0742 PM HAIL DE FOREST 43.25N 89.35W 03/23/2017 M0.25 INCH DANE WI PUBLIC VIA TWITTER. 0745 PM HAIL 4 N DEERFIELD 43.11N 89.06W 03/23/2017 M0.50 INCH DANE WI PUBLIC 1/4 INCH TO 1/2 INCH DIAMETER HAIL ACCUMULATED ON GRASSY AND NON-GRASSY AREAS. 0755 PM HAIL 1 S FORT ATKINSON 42.91N 88.84W 03/23/2017 M0.25 INCH JEFFERSON WI LAW ENFORCEMENT PEA SIZE TO ONE-HALF INCH DIAMETER HAIL SOUTH OF FORT ATKINSON AT COUNTY ROAD N. 0800 PM HAIL PALMYRA 42.88N 88.59W 03/23/2017 M1.00 INCH JEFFERSON WI BROADCAST MEDIA VIA MEDIA CHAT. 0800 PM HAIL PALMYRA 42.88N 88.59W 03/23/2017 E1.50 INCH JEFFERSON WI STORM CHASER MIX OF 1 TO 1.5 INCH DIAMETER HAIL. 0801 PM HAIL WATERLOO 43.18N 88.99W 03/23/2017 E0.25 INCH JEFFERSON WI PUBLIC VIA TWITTER. 0802 PM HAIL FORT ATKINSON 42.93N 88.84W 03/23/2017 M0.25 INCH JEFFERSON WI PUBLIC PEA TO ONE-HALF INCH DIAMETER HAIL COVERING THE ROAD AT COUNTY ROAD S. VIA TWITTER. 0808 PM HAIL 2 N MONONA 43.08N 89.34W 03/23/2017 M0.25 INCH DANE WI TRAINED SPOTTER PEA TO ONE-HALF INCH HAIL THAT LASTED 1-2 MINUTES AT INTERSECTION OF HOEPKER ROAD AND AMERICAN PARKWAY ON MADISONS EAST SIDE. 0809 PM HAIL 1 WNW SUN PRAIRIE 43.19N 89.25W 03/23/2017 M1.00 INCH DANE WI AMATEUR RADIO 0815 PM HAIL 1 WNW FORT ATKINSON 42.93N 88.86W 03/23/2017 E0.25 INCH JEFFERSON WI NWS EMPLOYEE PEA TO ONE HALF INCH DIAMETER HAIL COVERING THE ROAD AT THE HWY 26 BYPASS. 0834 PM HAIL MUKWONAGO 42.87N 88.33W 03/23/2017 E0.75 INCH WAUKESHA WI TRAINED SPOTTER PENNY TO THREE QUARTER INCH DIAMETER HAIL FOR ABOUT 10 MINUTES. 0839 PM HAIL 1 S MUKWONAGO 42.85N 88.33W 03/23/2017 E0.88 INCH WAUKESHA WI PUBLIC NICKEL SIZE HAIL AT INTERSECTION OF I-43 AND HWY. 83. VIA TWITTER. 0839 PM HAIL 2 NW WIND POINT 42.80N 87.79W 03/23/2017 M0.25 INCH RACINE WI TRAINED SPOTTER PEA SIZE HAIL COVERING THE GROUND 0.5 MILES NORTH OF WIND POINT. VIA TWITTER. 0850 PM HAIL 1 WNW CALEDONIA 42.81N 87.95W 03/23/2017 E0.50 INCH RACINE WI PUBLIC LEFT TWO LANES OF I-41/94 NB CLOSED AT HIGHWAY G. ACCIDENT REPORTED. CARS EXITED TO SIDE OF ROADWAY DUE TO FALLING HAIL. 0850 PM HAIL 1 W CALEDONIA 42.81N 87.95W 03/23/2017 E0.50 INCH RACINE WI PUBLIC LEFT TWO LANES OF I-41/94 NB CLOSED AT HIGHWAY G. ACCIDENT REPORTED. CARS EXITED TO SIDE OF ROADWAY DUE TO FALLING HAIL. 0908 PM HAIL 1 E CALEDONIA 42.81N 87.91W 03/23/2017 E0.75 INCH RACINE WI PUBLIC DIME SIZE HAIL COVERING THE GROUND. RELAYED BY SKYWARN COORDINATOR.
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