Alert archive / Michigan / Severe Thunderstorm Warnings in 2015
Severe Thunderstorm Warning 11, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this severe thunderstorm warning at Jun 22, 2015, 12:51 PM EDT for Allegan County, Barry County, Kalamazoo County, Michigan. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jun 22, 2015, 12:51 PM EDT (16:51 UTC)
- Expired
- Jun 22, 2015, 1:30 PM EDT
- In force
- 39 min
- Issued by
- NWS Grand Rapids, MI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Allegan County, MI, Barry County, MI, Kalamazoo County, MI
The radar
The Grand Rapids radar (KGRR), 49 km from the middle of the area, began a volume at 16:52 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Detroit, MI (KDTX), launched 12:00Z, 4.9 hours before the alert went out and 179 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 20 J/kg
- Mixed-layer CIN
- -55 J/kg
- Mixed-layer LCL
- 1195 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 89 m²/s²
- 0-3 km storm-relative helicity
- 157 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Grand Rapids, MI wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 22, 12:47 PM EDT, 4 minutes earlier.
Area forecast discussion, Jun 22, 12:47 PM EDT, 4 minutes before
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</html>Hazardous weather outlook, Jun 22, 5:53 AM EDT, 6 hours 58 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND RAPIDS MI 553 AM EDT MON JUN 22 2015 MIZ037>040-043>046-050>052-056>059-064>067-071>074-231000- MASON-LAKE-OSCEOLA-CLARE-OCEANA-NEWAYGO-MECOSTA-ISABELLA-MUSKEGON- MONTCALM-GRATIOT-OTTAWA-KENT-IONIA-CLINTON-ALLEGAN-BARRY-EATON- INGHAM-VAN BUREN-KALAMAZOO-CALHOUN-JACKSON- 553 AM EDT MON JUN 22 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST LOWER MICHIGAN. .DAY ONE...TODAY AND TONIGHT AN ENHANCED RISK FOR SEVERE THUNDERSTORMS EXISTS THIS AFTERNOON THROUGH THE EVENING FOR SOUTHWEST LOWER MICHIGAN. THERE IS AN INCREASED RISK FOR SIGNIFICANT SEVERE THUNDERSTORMS WHICH WOULD LEAD TO HIGHER IMPACTS. SEVERAL ROUNDS OF THUNDERSTORMS LOOK LIKELY. THIS FIRST ARRIVES DURING THE EARLY TO MIDDLE PART OF THE AFTERNOON WITH THE SECOND ROUND OF STORMS EXPECTED IN THE EVENING. THE PRIMARY RISKS WILL BE DAMAGING WINDS...LARGE HAIL WITH AN ISOLATED TORNADO POSSIBLE. AN INCREASED POTENTIAL FOR WIDESPREAD DAMAGING WINDS IS FORECASTED. FREQUENT LIGHTNING AND LOCALLY HEAVY RAIN ARE EXPECTED. THE PRIMARY STORM MOTION WILL BE EAST WITH SPEEDS OVER 50 MPH POSSIBLE. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY THUNDERSTORMS ARE POSSIBLE WEDNESDAY INTO FRIDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED THIS AFTERNOON INTO TONIGHT. LMZ844>849-231000- ST JOSEPH TO SOUTH HAVEN MI-SOUTH HAVEN TO HOLLAND MI- HOLLAND TO GRAND HAVEN MI-GRAND HAVEN TO WHITEHALL MI- WHITEHALL TO PENTWATER MI-PENTWATER TO MANISTEE MI- 553 AM EDT MON JUN 22 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST LOWER MICHIGAN. .DAY ONE...TODAY AND TONIGHT HAZARDOUS CONDITIONS FOR SWIMMING AND SMALL CRAFT WILL EXIST THIS AFTERNOON INTO TONIGHT DUE TO THE LARGE WAVES. FAST MOVING THUNDERSTORMS WILL POSE A RISK FOR MARINERS THIS AFTERNOON INTO TONIGHT. WIND GUSTS OVER 35 KNOTS...FREQUENT LIGHTNING ALONG WITH LARGE HAIL COULD OCCUR. PATCHY DENSE FOG MAY EXISTS AS WELL. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY THUNDERSTORMS ARE POSSIBLE WEDNESDAY INTO FRIDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED THIS AFTERNOON INTO TONIGHT.
The office that day
Everything else NWS Grand Rapids, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 10:32 PM EDT | Beach Hazards Statement | GRR | Allegan, Mason, Muskegon, Oceana, Ottawa, Van Buren | 33 hr |
| Jun 22, 11:16 AM EDT | Special Marine Warning | GRR | 119 min | |
| Jun 22, 12:10 PM EDT | Severe Thunderstorm Warning | GRR | Allegan | 50 min |
| Jun 22, 1:40 PM EDT | Special Weather Statement | GRR | Allegan, Barry, Kalamazoo, Kent, Muskegon, Newaygo and 3 more | 50 min |
| Jun 22, 2:41 PM EDT | Severe Thunderstorm Warning | GRR | Clinton, Ionia | 38 min |
| Jun 22, 2:59 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun, Kalamazoo | 46 min |
| Jun 22, 3:04 PM EDT | Severe Thunderstorm Warning | GRR | Eaton, Ingham | 41 min |
| Jun 22, 3:15 PM EDT | Severe Thunderstorm Warning | GRR | Jackson | 60 min |
| Jun 22, 5:40 PM EDT | Gale Warning | GRR | 4 hr |
Nearby
Severe Thunderstorm Warnings in Michigan, 2015Every severe thunderstorm warning in 2015
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.