Alert archive / Michigan / Severe Thunderstorm Watches in 2000
Severe Thunderstorm Watch 249
The Storm Prediction Center issued this severe thunderstorm watch at May 8, 2000, 10:30 PM EDT for 32 counties in Michigan. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- May 8, 2000, 10:30 PM EDT (02:30 UTC)
- Expired
- May 9, 2000, 4:00 AM EDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 32 counties
Allegan County, MI, Arenac County, MI, Barry County, MI, Bay County, MI, Clare County, MI, Clinton County, MI, Eaton County, MI, Genesee County, MI, Gladwin County, MI, Gratiot County, MI, Huron County, MI, Ingham County, MI, Ionia County, MI, Isabella County, MI, Kalamazoo County, MI, Kent County, MI, Lapeer County, MI, Livingston County, MI, Macomb County, MI, Mecosta County, MI, Midland County, MI, Montcalm County, MI, Muskegon County, MI, Newaygo County, MI, Oakland County, MI, Ottawa County, MI, Saginaw County, MI, Saint Clair County, MI, Sanilac County, MI, Shiawassee County, MI, Tuscola County, MI, Van Buren County, MI
The radar
The Grand Rapids radar (KGRR), 78 km from the middle of the area, began a volume at 02:30 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.
Warnings issued inside it
7 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 8, 10:40 PM EDT | Severe Thunderstorm Warning | GRR | Muskegon | 35 min |
| May 9, 12:05 AM EDT | Severe Thunderstorm Warning | DTX | Huron | 40 min |
| May 9, 12:44 AM EDT | Severe Thunderstorm Warning | DTX | Midland | 31 min |
| May 9, 1:34 AM EDT | Severe Thunderstorm Warning | DTX | Huron | 41 min |
| May 9, 2:19 AM EDT | Severe Thunderstorm Warning | GRR | Eaton | 26 min |
| May 9, 2:21 AM EDT | Severe Thunderstorm Warning | DTX | Genesee, Shiawassee | 39 min |
| May 9, 2:45 AM EDT | Severe Thunderstorm Warning | GRR | Ingham | 45 min |
The nearest sounding before it
Detroit, MI (KDTX), launched 00:00Z, 2.5 hours before the alert went out and 132 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
- 876 J/kg
- Mixed-layer CIN
- -60 J/kg
- Mixed-layer LCL
- 1484 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 71 m²/s²
- 0-3 km storm-relative helicity
- 127 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.0
The text
As transmitted, in the capitals the NWS used until 2016.
620 WWUS9 KMKC 090202 SEL9 SEL9 MKC WW 090202 MIZ000-LMZ000-LHZ000-090800- URGENT - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WATCH NUMBER 249 STORM PREDICTION CENTER NORMAN OK 1002 PM EDT MON MAY 8 2000 THE STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR PORTIONS OF LOWER MICHIGAN LAKE MICHIGAN LAKE HURON EFFECTIVE THIS MONDAY NIGHT AND TUESDAY MORNING FROM 1030 PM UNTIL 400 AM EDT. HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 60 STATUTE MILES NORTH AND SOUTH OF A LINE FROM 15 MILES SOUTHWEST OF MUSKEGON MICHIGAN TO 60 MILES NORTH NORTHEAST OF MOUNT CLEMENS MICHIGAN. REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. OTHER WATCH INFORMATION... CONTINUE...WW 246...WW 247...WW 248... DISCUSSION...LINE OF SEVERE THUNDERSTORMS MOVING EWD ACROSS SRN LM ASSOCIATED WITH WAVE ON SURFACE FRONT. CAPES TO 2500 J/KG AND FAVORABLE SHEAR PROFILES...WILL SUPPORT SEVERE THUNDERSTORMS CONTINUING TO MOVE EWD ACROSS LOWER MI. AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 26035. ...HALES 435,0862 441,0822 423,0822 420,0862
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 8, 9:15 PM EDT | Severe Thunderstorm Watch | SPC | Muskegon | 5 hr |
| May 8, 11:30 PM EDT | Severe Thunderstorm Watch | SPC | Berrien, Cass, Saint Joseph | 6 hr |
| May 9, 1:45 AM EDT | Severe Thunderstorm Watch | SPC | Branch, Calhoun, Hillsdale, Jackson, Lenawee, Monroe and 3 more | 5 hr |
| May 9, 6:30 PM EDT | Tornado Watch | SPC | Barry, Branch, Calhoun, Clinton, Eaton, Genesee and 14 more | 5 hr |
Nearby
Severe Thunderstorm Watches in Michigan, 2000Every severe thunderstorm watch in 2000
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.