A Moderate Risk of severe thunderstorms (level 4 of 5) is in the outlook across portions of the Midwest today. Damaging winds, a few tornadoes and frequent lightning with heavy rainfall are in the forecast. Meanwhile, dangerous heat across the southern Plains into the Great Lakes, mid-Atlantic and Northeast will expand into Friday. Risk for wildfires for the central Rockies and Sacramento Valley. Read More >
Overview
A long lived supercell moved southeast across eastern Kansas on July 11. This storm produced a 100 mile long swath of large hail in excess of 1 inch. Reports of four inch hail were received from both Wabaunsee and Coffey Counties.
Photos & Video
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| Hail up to 4.5" wide near Dover, KS. (Jayson Prentice) |
Car windshield destroyed by large hail near Dover. (Jayson Prentice) |
Softball size hail near Maple Hill, KS (Karen Kraus) |
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| 4.1" wide hail 3 miles north of Paxico. (Anna Lukert) |
4 inch hail in Waverly around 3:07 PM. (Courtney Moloney) |
4 inch hail in Waverly. (Courtney Moloney) |
Radar and Environment
Radar
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| Radar at 12:59 PM - Storm over Westmoreland | Radar at 1:38 PM - Storm over Maple Hill | Radar at 2:12 PM - Storm over Auburn | Radar at 3:04 PM - Storm over Waverly |
Environment
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| 18z (1PM CDT) Topeka Sounding. Weak low-level shear but strong deep-layer shear and steep lapse rates. | Storm Prediction Center 1630z convective outlook. The outlook highlighted the potential for significant (2"+) hail. | SPC mesoscale discussion graphic at 12:43 PM. Highlighted potential for very large hail across northeast Kansas, given 50 kts of effective shear and 2500-4000 J/kg of mixed-layer CAPE. |
Storm Reports
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| National view of severe weather reports on July 11. Note several long swaths of damaging winds and large hail. | Zoomed in view of hail reports across eastern Kansas on July 11. |
HAIL REPORT SUMMARY...
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0155 PM HAIL 3 NW DOVER 38.99N 95.98W
07/11/2020 E4.00 INCH WABAUNSEE KS PUBLIC
0150 PM HAIL 4 ESE PAXICO 39.06N 96.10W
07/11/2020 E1.75 INCH WABAUNSEE KS TRAINED SPOTTER
0157 PM HAIL 2 NW DOVER 38.99N 95.97W
07/11/2020 E3.00 INCH WABAUNSEE KS TRAINED SPOTTER
SPOTTER REPORTED UP TO 3.5 INCH HAIL.
0315 PM HAIL 2 SW TECUMSEH 39.03N 95.61W
07/11/2020 M1.00 INCH SHAWNEE KS PUBLIC
0221 PM HAIL 1 N AUBURN 38.91N 95.82W
07/11/2020 E1.00 INCH SHAWNEE KS NWS EMPLOYEE
0205 PM HAIL 4 S DOVER 38.91N 95.93W
07/11/2020 E2.00 INCH SHAWNEE KS PUBLIC
SOCIAL MEDIA POST SHOWING UP TO 2 INCH HAIL.
0127 PM HAIL WAMEGO 39.20N 96.30W
07/11/2020 E1.75 INCH POTTAWATOMIE KS STORM CHASER
0103 PM HAIL WESTMORELAND 39.39N 96.41W
07/11/2020 E1.75 INCH POTTAWATOMIE KS TRAINED SPOTTER
0100 PM HAIL WESTMORELAND 39.39N 96.42W
07/11/2020 E2.75 INCH POTTAWATOMIE KS PUBLIC
SEVERAL LARGE SIZE HAILSTONES FALLING WITH
SOME OF THE LARGEST BEING BASEBALL ALONG
WITH GOLF BALL SIZE HAIL.
0155 PM HAIL 4 W DOVER 38.96N 96.02W
07/11/2020 M4.50 INCH WABAUNSEE KS STORM CHASER
DELAYED REPORT OF 4.5 INCH. RECEIVED ON
SOCIAL MEDIA.
0220 PM HAIL 3 SW AUBURN 38.87N 95.85W
07/11/2020 E1.75 INCH OSAGE KS TRAINED SPOTTER
0218 PM HAIL 5 SW AUBURN 38.84N 95.87W
07/11/2020 E2.00 INCH OSAGE KS PUBLIC
SOCIAL MEDIA POST SHOWING UP TO 2 INCH HAIL.
0309 PM HAIL 1 S WAVERLY 38.38N 95.60W
07/11/2020 E2.00 INCH COFFEY KS PUBLIC
0307 PM HAIL WAVERLY 38.39N 95.60W
07/11/2020 E4.00 INCH COFFEY KS LAW ENFORCEMENT
TIME ESTIMATED BY RADAR.
0357 PM HAIL 4 NW LONE ELM 38.13N 95.30W
07/11/2020 E1.00 INCH ANDERSON KS TRAINED SPOTTER
0353 PM HAIL 5 SSW GARNETT 38.22N 95.28W
07/11/2020 E1.75 INCH ANDERSON KS EMERGENCY MNGR
0351 PM HAIL 4 NW LONE ELM 38.13N 95.30W
07/11/2020 E1.00 INCH ANDERSON KS EMERGENCY MNGR
0339 PM HAIL 5 W GARNETT 38.28N 95.33W
07/11/2020 E2.00 INCH ANDERSON KS PUBLIC
0337 PM HAIL 3 SSE HARRIS 38.28N 95.42W
07/11/2020 M3.00 INCH ANDERSON KS TRAINED SPOTTER
MEASURE 3.25 INCH HAIL.
0328 PM HAIL 5 N WESTPHALIA 38.25N 95.49W
07/11/2020 E1.00 INCH ANDERSON KS CO-OP OBSERVER
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