Alert archive / Michigan / Tornado Watches in 2000
Tornado Watch 273
The Storm Prediction Center issued this tornado watch at May 12, 2000, 4:45 PM EDT for 41 counties in Michigan. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- May 12, 2000, 4:45 PM EDT (20:45 UTC)
- Expired
- May 12, 2000, 10:00 PM EDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 41 counties
Alcona County, MI, Alpena County, MI, Antrim County, MI, Arenac County, MI, Bay County, MI, Benzie County, MI, Charlevoix County, MI, Cheboygan County, MI, Clare County, MI, Crawford County, MI, Genesee County, MI, Gladwin County, MI, Grand Traverse County, MI, Gratiot County, MI, Huron County, MI, Iosco County, MI, Isabella County, MI, Kalkaska County, MI, Lake County, MI, Lapeer County, MI, Leelanau County, MI, Manistee County, MI, Mason County, MI, Mecosta County, MI, Midland County, MI, Missaukee County, MI, Montcalm County, MI, Montmorency County, MI, Muskegon County, MI, Newaygo County, MI, Oceana County, MI, Ogemaw County, MI, Osceola County, MI, Oscoda County, MI, Otsego County, MI, Presque Isle County, MI, Roscommon County, MI, Saginaw County, MI, Sanilac County, MI, Tuscola County, MI, Wexford County, MI
The radar
The NCL Michigan radar (KAPX), 37 km from the middle of the area, began a volume at 20:45 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
13 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 12, 4:46 PM EDT | Flash Flood Warning | APX | Manistee, Wexford | 5 hr |
| May 12, 4:58 PM EDT | Severe Thunderstorm Warning | DTX | Bay, Midland | 47 min |
| May 12, 5:10 PM EDT | Severe Thunderstorm Warning | APX | Missaukee, Roscommon | 50 min |
| May 12, 5:44 PM EDT | Severe Thunderstorm Warning | DTX | Bay | 31 min |
| May 12, 5:59 PM EDT | Severe Thunderstorm Warning | DTX | Tuscola | 31 min |
| May 12, 6:08 PM EDT | Tornado Warning | DTX | Tuscola | 37 min |
| May 12, 6:11 PM EDT | Severe Thunderstorm Warning | APX | Antrim | 49 min |
| May 12, 6:11 PM EDT | Severe Thunderstorm Warning | APX | Leelanau | 49 min |
| May 12, 6:16 PM EDT | Tornado Warning | DTX | Huron | 59 min |
| May 12, 6:29 PM EDT | Severe Thunderstorm Warning | APX | Charlevoix, Emmet | 46 min |
| May 12, 7:06 PM EDT | Severe Thunderstorm Warning | APX | Alcona | 24 min |
| May 12, 7:08 PM EDT | Severe Thunderstorm Warning | GRR | Newaygo | 37 min |
| May 12, 7:14 PM EDT | Tornado Warning | DTX | Huron | 46 min |
The nearest sounding before it
Alpena, MI (KAPX), launched 12:00Z, 8.8 hours before the alert went out and 202 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
- 1301 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 124 m²/s²
- 0-3 km storm-relative helicity
- 105 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
221 WWUS9 KMKC 122024 SEL3 SEL3 MKC WW 122019 MIZ000-LMZ000-LHZ000-130200- URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 273 STORM PREDICTION CENTER NORMAN OK 419 PM EDT FRI MAY 12 2000 THE STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF CENTRAL AND NORTHERN LOWER MICHIGAN EASTERN LAKE MICHIGAN WESTERN LAKE HURON EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 445 PM UNTIL 1000 PM EDT. TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE TORNADO WATCH AREA IS ALONG AND 85 STATUTE MILES NORTH AND SOUTH OF A LINE FROM 20 MILES NORTHWEST OF MANISTEE MICHIGAN TO 55 MILES EAST SOUTHEAST OF OSCODA 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...THIS TORNADO WATCH REPLACES TORNADO WATCH NUMBER 270. WATCH NUMBER 270 WILL NOT BE IN EFFECT AFTER 445 PM EDT. CONTINUE...WW 271...WW 272... DISCUSSION...CONVECTIVE CLUSTER INCREASING ALONG WARM FRONT AND AHEAD OF UPPER TROUGH AXIS. AIR MASS BECOMING HIGHLY UNSTABLE WITH MUCAPES AOA 4000 J/KG MOVING INTO WATCH AREA. A FEW TORNADOES POSSIBLE ALONG SURFACE BOUNDARIES WITH LARGE HAIL AND DAMAGING WINDS THE MAIN THREATS ELSEWHERE. AVIATION...TORNADOES AND 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 24035. ...ROGASH 454,0863 452,0822 425,0822 431,0863
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 12, 2:30 AM EDT | Severe Thunderstorm Watch | SPC | Allegan, Arenac, Barry, Bay, Calhoun, Clare and 39 more | 6 hr |
| May 12, 1:00 PM EDT | Tornado Watch | SPC | Arenac, Bay, Benzie, Clare, Crawford, Gladwin and 24 more | 5 hr |
| May 12, 3:00 PM EDT | Tornado Watch | SPC | Allegan, Barry, Berrien, Calhoun, Cass, Clinton and 8 more | 6 hr |
| May 12, 3:30 PM EDT | Severe Thunderstorm Watch | SPC | Menominee | 6 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.