Alert archive / Michigan / Tornado Watches in 2000
Tornado Watch 256
The Storm Prediction Center issued this tornado watch at May 9, 2000, 6:30 PM EDT for 20 counties in Michigan. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- May 9, 2000, 6:30 PM EDT (22:30 UTC)
- Expired
- May 9, 2000, 11:00 PM EDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
Counties Barry County, MI, Branch County, MI, Calhoun County, MI, Clinton County, MI, Eaton County, MI, Genesee County, MI, Hillsdale County, MI, Ingham County, MI, Ionia County, MI, Jackson County, MI, Kalamazoo County, MI, Kent County, MI, Lenawee County, MI, Livingston County, MI, Monroe County, MI, Oakland County, MI, Saint Joseph County, MI, Shiawassee County, MI, Washtenaw County, MI, Wayne County, MI
The radar
The Grand Rapids radar (KGRR), 81 km from the middle of the area, began a volume at 22:34 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
18 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 9, 6:34 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun | 41 min |
| May 9, 6:49 PM EDT | Severe Thunderstorm Warning | DTX | Lenawee | 41 min |
| May 9, 6:57 PM EDT | Severe Thunderstorm Warning | DTX | Monroe, Wayne | 63 min |
| May 9, 7:13 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun | 32 min |
| May 9, 7:17 PM EDT | Severe Thunderstorm Warning | IWX | Hillsdale | 58 min |
| May 9, 7:24 PM EDT | Severe Thunderstorm Warning | GRR | Jackson | 56 min |
| May 9, 7:25 PM EDT | Severe Thunderstorm Warning | DTX | Lenawee | 35 min |
| May 9, 7:39 PM EDT | Tornado Warning | DTX | Lenawee, Washtenaw | 66 min |
| May 9, 7:42 PM EDT | Severe Thunderstorm Warning | GRR | Ingham | 48 min |
| May 9, 7:49 PM EDT | Tornado Warning | IWX | Hillsdale | 31 min |
| May 9, 7:59 PM EDT | Severe Thunderstorm Warning | DTX | Macomb, Wayne | 46 min |
| May 9, 8:04 PM EDT | Severe Thunderstorm Warning | DTX | Livingston | 26 min |
| May 9, 8:10 PM EDT | Severe Thunderstorm Warning | DTX | Monroe | 35 min |
| May 9, 8:14 PM EDT | Tornado Warning | DTX | Livingston | 46 min |
| May 9, 8:22 PM EDT | Tornado Warning | DTX | Monroe, Wayne | 38 min |
| May 9, 8:37 PM EDT | Severe Thunderstorm Warning | DTX | Oakland | 53 min |
| May 9, 8:52 PM EDT | Tornado Warning | DTX | Oakland | 53 min |
| May 9, 8:59 PM EDT | Severe Thunderstorm Warning | DTX | Wayne | 16 min |
The nearest sounding before it
Detroit, MI (KDTX), launched 12:00Z, 10.5 hours before the alert went out and 105 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1010 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 224 m²/s²
- 0-3 km storm-relative helicity
- 194 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
196 WWUS9 KMKC 092205 SEL6 SEL6 MKC WW 092205 MIZ000-100300- URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 256 STORM PREDICTION CENTER NORMAN OK 605 PM EDT TUE MAY 9 2000 THE STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF SOUTHERN LOWER MICHIGAN EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 630 PM UNTIL 1100 PM EDT. TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE TORNADO WATCH AREA IS ALONG AND 45 STATUTE MILES NORTH AND SOUTH OF A LINE FROM 15 MILES NORTHWEST OF KALAMAZOO MICHIGAN TO 20 MILES NORTHEAST OF DETROIT MICHIGAN. REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND 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 253...WW 254...WW 255... DISCUSSION...DEEPENING SURFACE LOW MOVING INTO NRN IND WITH WARM FRONT ACROSS SRN LOWER MI. STRONG DEEP LAYER SHEAR COUPLED WITH WARM FRONTAL CONVERGENCE AND MODERATELY UNSTABLE AIRMASSS SUPPORTS ISOLATED TORNADIC SUPERCELLS AS WELL AS BOW ECHOES. AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 23035. ...HALES 430,0854 430,0830 414,0830 414,0854
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, 10:30 PM EDT | Severe Thunderstorm Watch | SPC | Allegan, Arenac, Barry, Bay, Clare, Clinton and 26 more | 6 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 |
Nearby
Tornado Watches in Michigan, 2000Every tornado 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.