Alert archive / Michigan / Severe Thunderstorm Warnings in 2010
Severe Thunderstorm Warning 69, NWS Detroit, MI
NWS Detroit, MI issued this severe thunderstorm warning at Jul 23, 2010, 7:44 PM EDT for Lenawee County, Michigan. It was in force for 35 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
- Jul 23, 2010, 7:44 PM EDT (23:44 UTC)
- Expired
- Jul 23, 2010, 8:19 PM EDT
- In force
- 35 min
- Issued by
- NWS Detroit, MI
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Lenawee County, MI
The radar
The Detroit radar (KDTX), 102 km from the middle of the area, began a volume at 23:46 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 23, 5:23 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Detroit, MI (KDTX), launched 12:00Z, 11.7 hours before the alert went out and 106 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
- 2736 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 470 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 202 m²/s²
- 0-3 km storm-relative helicity
- 168 m²/s²
- Significant tornado parameter
- 1.5
- Supercell composite
- 8.7
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 Detroit, MI wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 23, 7:17 PM EDT, 27 minutes earlier.
Area forecast discussion, Jul 23, 7:17 PM EDT, 27 minutes before
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</html>Hazardous weather outlook, Jul 23, 4:58 PM EDT, 2 hours 46 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 458 PM EDT FRI JUL 23 2010 MIZ047>049-053>055-060>063-242100- MIDLAND-BAY-HURON-SAGINAW-TUSCOLA-SANILAC-SHIAWASSEE-GENESEE-LAPEER- ST. CLAIR- 458 PM EDT FRI JUL 23 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST MICHIGAN. .DAY ONE...TONIGHT THERE IS A CHANCE OF THUNDERSTORMS ACROSS ALL OF SOUTHEAST MICHIGAN WITH A SLIGHT CHANCE OF SEVERE WEATHER. THE MOST LIKELY TIME FRAME FOR SEVERE STORMS WILL BE BETWEEN 3-11 PM WITH BETTER CHANCES FOR STRONG STORMS ALONG AND SOUTH OF THE I-69 CORRIDOR. SEVERE THUNDERSTORMS TODAY WILL BE CAPABLE OF PRODUCING WINDS TO 60 MPH AND HAIL TO ONE INCH IN DIAMETER AS THEY TRACK TO THE EAST AT 25 MPH. STORMS MAY HAVE A TENDENCY TO TRACK OVER THE SAME AREA WITH LOCALLY HEAVY RAIN AND MINOR FLOODING POSSIBLE. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY THE CHANCE OF SEVERE THUNDERSTORMS WILL CONTINUE THROUGH SATURDAY AS A COLD FRONT PUSHES SOUTH ACROSS THE REGION. A MOIST AND UNSTABLE AIR MASS OVER THE STATE COMBINED WITH A STRONG WIND FIELD ALOFT WILL ENHANCE THE RISK OF SEVERE STORMS. .SPOTTER INFORMATION STATEMENT... DISPATCHERS PLEASE NOTIFY YOUR EMERGENCY MANAGERS IMMEDIATELY. SPOTTER ACTIVATION MAY BE NEEDED TONIGHT. LCZ422-423-460-LEZ444-LHZ361>363-421-422-441>443-462>464-242100- ST. CLAIR RIVER-DETROIT RIVER-LAKE ST. CLAIR- MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI- LAKE HURON FROM 5NM EAST OF MACKINAC BRIDGE TO PRESQUE ISLE LT BEYOND 5 NM OFF SHORE- LAKE HURON FROM PRESQUE ISLE LIGHT TO STURGEON POINT MI BEYOND 5NM OFF SHORE- LAKE HURON FROM STURGEON POINT TO ALABASTER MI BEYOND 5NM OFF SHORE- OUTER SAGINAW BAY SW OF ALABASTER TO PORT AUSTIN MI TO INNER SAGINAW BAY-INNER SAGINAW BAY SW OF POINT AU GRES TO BAY PORT MI- PORT AUSTIN TO HARBOR BEACH MI-HARBOR BEACH TO PORT SANILAC MI- PORT SANILAC TO PORT HURON MI- LAKE HURON FROM PORT AUSTIN TO HARBOR BEACH BEYOND 5NM OFF SHORE- LAKE HURON FROM HARBOR BEACH TO PORT SANILAC BEYOND 5NM OFF SHORE- LAKE HURON FROM PORT SANILAC TO PORT HURON BEYOND 5NM OFF SHORE- 458 PM EDT FRI JUL 23 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF LAKE ERIE...LAKE HURON AND LAKE ST CLAIR. .DAY ONE...TONIGHT THERE IS A CHANCE OF THUNDERSTORMS FROM THE SOUTH HALF OF LAKE HURON SOUTH TO LAKE ERIE TODAY. THERE IS A SLIGHT CHANCE OF SEVERE WEATHER WITH THUNDERSTORMS TODAY...MAINLY BETWEEN 3-11 PM. SEVERE THUNDERSTORMS TODAY WILL BE CAPABLE OF PRODUCING WINDS TO 50 KNOTS AND HAIL TO ONE INCH IN DIAMETER AS THEY TRACK TO THE EAST AT 20 KNOTS. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY THE CHANCE OF SEVERE THUNDERSTORMS WILL CONTINUE THROUGH SATURDAY AS A COLD FRONT PUSHES SOUTH ACROSS THE REGION. A MOIST AND UNSTABLE AIR MASS OVER THE STATE COMBINED WITH A STRONG WIND FIELD ALOFT WILL ENHANCE THE RISK OF SEVERE STORMS. .SPOTTER INFORMATION STATEMENT... DISPATCHERS PLEASE NOTIFY YOUR EMERGENCY MANAGERS IMMEDIATELY. SPOTTER ACTIVATION MAY BE NEEDED TONIGHT. MIZ068>070-075-076-082-083-242100- LIVINGSTON-OAKLAND-MACOMB-WASHTENAW-WAYNE-LENAWEE-MONROE- 458 PM EDT FRI JUL 23 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST MICHIGAN. .DAY ONE...TONIGHT THERE IS A CHANCE OF THUNDERSTORMS ACROSS ALL OF SOUTHEAST MICHIGAN WITH A SLIGHT CHANCE OF SEVERE WEATHER. THE MOST LIKELY TIME FRAME FOR SEVERE STORMS WILL BE BETWEEN 3-11 PM WITH BETTER CHANCES FOR STRONG STORMS ALONG AND SOUTH OF THE I-69 CORRIDOR. SEVERE THUNDERSTORMS TODAY WILL BE CAPABLE OF PRODUCING WINDS TO 60 MPH AND HAIL TO ONE INCH IN DIAMETER AS THEY TRACK TO THE EAST AT 25 MPH. STORMS MAY HAVE A TENDENCY TO TRACK OVER THE SAME AREA WITH LOCALLY HEAVY RAIN AND MINOR FLOODING POSSIBLE. A HEAT ADVISORY IS IN EFFECT FOR PORTIONS OF SOUTHEASTERN MICHIGAN. PLEASE REFER TO THE LATEST FORECAST PRODUCT.../NPWDTX/ FOR GREATER DETAIL. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY THE CHANCE OF SEVERE THUNDERSTORMS WILL CONTINUE THROUGH SATURDAY AS A COLD FRONT PUSHES SOUTH ACROSS THE REGION. A MOIST AND UNSTABLE AIR MASS OVER THE STATE COMBINED WITH A STRONG WIND FIELD ALOFT WILL ENHANCE THE RISK OF SEVERE STORMS. .SPOTTER INFORMATION STATEMENT... DISPATCHERS PLEASE NOTIFY YOUR EMERGENCY MANAGERS IMMEDIATELY. SPOTTER ACTIVATION MAY BE NEEDED TONIGHT. CB YOU CAN OBTAIN YOUR LATEST NATIONAL WEATHER SERVICE FORECASTS ONLINE AT WWW.WEATHER.GOV/DETROIT (ALL LOWER CASE).
In the hours before
Local storm report, Jul 23, 7:10 PM EDT, 34 minutes before
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</html>Local storm report, Jul 23, 7:16 PM EDT, 28 minutes before
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</html>Local storm report, Jul 23, 7:33 PM EDT, 11 minutes before
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</html>Local storm report, Jul 23, 7:35 PM EDT, 9 minutes before
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</html>Local storm report, Jul 23, 7:39 PM EDT, 5 minutes before
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</html>Local storm report, Jul 23, 7:43 PM EDT, 1 minute before
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</html>The office that day
Everything else NWS Detroit, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 22, 8:10 PM EDT | Flash Flood Watch | DTX | Bay, Genesee, Huron, Lapeer, Lenawee, Livingston and 11 more | 7 hr |
| Jul 22, 9:04 PM EDT | Small Craft Advisory | DTX | 7 hr | |
| Jul 23, 1:10 PM EDT | Special Marine Warning | DTX | 103 min | |
| Jul 23, 1:48 PM EDT | Severe Thunderstorm Warning | DTX | Macomb, Washtenaw, Wayne | 31 min |
| Jul 23, 1:52 PM EDT | Areal Flood Advisory | DTX | Macomb, Oakland, Washtenaw, Wayne | 2 hr |
| Jul 23, 4:56 PM EDT | Heat Advisory | DTX | Lenawee, Livingston, Macomb, Monroe, Oakland, Washtenaw and 1 more | 3 hr |
| Jul 23, 5:32 PM EDT | Severe Thunderstorm Warning | DTX | Wayne | 31 min |
| Jul 23, 5:36 PM EDT | Special Marine Warning | DTX | 40 min | |
| Jul 23, 5:41 PM EDT | Severe Thunderstorm Warning | DTX | Livingston, Washtenaw | 48 min |
| Jul 23, 5:51 PM EDT | Flash Flood Warning | DTX | Livingston, Oakland, Washtenaw, Wayne | 4 hr |
| Jul 23, 6:08 PM EDT | Severe Thunderstorm Warning | DTX | Washtenaw | 39 min |
| Jul 23, 6:14 PM EDT | Severe Thunderstorm Warning | DTX | Wayne | 55 min |
| Jul 23, 6:26 PM EDT | Tornado Warning | DTX | Monroe, Washtenaw, Wayne | 40 min |
| Jul 23, 6:31 PM EDT | Severe Thunderstorm Warning | DTX | Lenawee, Washtenaw | 29 min |
| Jul 23, 6:38 PM EDT | Special Marine Warning | DTX | 36 min |
Nearby
Severe Thunderstorm Warnings in Michigan, 2010Every severe thunderstorm warning in 2010
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.