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Upper Peninsula Skywarn



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Join our free, private, U.P. wide weather spotters' email group by entering your email address and pressing the Yahoo button below.


What should I report?

The National Weather Service would like to know about these as soon as possible:

TORNADO    
WATERSPOUT    
FUNNEL CLOUD  

Organized, persistent, sustained rotation

WALL CLOUD  

Organized, persistent, sustained rotation

HAIL

Dime size or larger

Report the largest size hailstone

WIND GUSTS

50 mph or higher

Specify estimate or measurement

FLOODING  

Flooding that impacts roads, homes or businesses.

STORM DAMAGE  

Damage to structures (roof, siding, windows, etc)
Damage to vehicles (from hail or wind)
Trees or large limbs down
Power/telephone poles or lines down
Damage to farm equipment, machinery, etc

HEAVY SNOW  

1" or more per hour, accumulations of 2" or more

ICE JAMS  

Ice jams on rivers or streams

Again, reports should provide as much detail as possible to describe the where, when, how, etc of the event.


Some commonly used hail sizes
Pea .25 inch Golf Ball 1.75 inch
Half-inch .50 inch Hen Egg 2.00 inch
Dime .75 inch Tennis Ball 2.50 inch
Nickel .88 inch Baseball 2.75 inch
Quarter 1.00 inch Tea Cup 3.00 inch
Half Dollar 1.25 inch Grapefruit 4.00 inch
Ping Pong Ball 1.50 inch Softball 4.50 inch


General Guidelines for Estimating Wind Speeds
30-44 mph (26-39 kt) Whole trees in motion. Inconvenient walking into the wind. Light-weight loose objects (e.g., lawn furniture) tossed or toppled.
45-57 mph (39-49 kt) Large trees bend; twigs, small limbs break and a few larger dead or weak branches may break. Old/weak structures (e.g., sheds, barns) may sustain minor damage (roof, doors). Buildings partially under construction may be damaged. A few loose shingles removed from houses.
58-74 mph (50-64 kt) Large limbs break; shallow rooted trees pushed over. Semi-trucks overturned. More significant damage to old/weak structures. Shingles, awnings removed from houses; damage to chimneys and antennas.
75-89 mph (65-77 kt) Widespread damage to trees with large limbs down or trees broken/uprooted. Mobile homes may be pushed off foundation or overturned. Roof may be partially peeled off industrial/commercial/ warehouse buildings. Some minor roof damage to homes. Weak structures (e.g., farm buildings, airplane hangars) may be severely damaged.
90+ mph (78+ kt) Many large trees broken and uprooted. Mobile homes damaged. Roofs partially peeled off homes and buildings. Moving automobiles pushed off the road. Barns, sheds demolished.





How Should I Report an Obervation?

On your local Skywarn Amateur Radio Repeater, if you have one.

All U.P. Counties except Chippwewa and Mackinac (NWS Marquette)
Online Form
Toll Free Telephone: 1-800-828-8002


Chippewa and Mackinac Counties only (NWS Gaylord)
eSpotter
Toll Free telephone: 1-800-647-6876


-OR- informally... by using WX Spots Software



ALL reports should include the following information:

WHO are you? Report your ham callsign or spotter ID (or phone number, or any other means of identification) so the NWS can contact you to verify the report. Without this information, the NWS cannot use your report.
WHAT did you see?
WHERE did you see it? Report the location/approximate location of the event. Be sure to distinguish clearly between where you are and where the event is thought to be happening (.I.m 5 miles north of Mayberry. The tornado looks to be about 5 miles to my northwest.).
WHEN did you see it? Be sure that reports that are relayed through multiple sources carry the time of the event, NOT the report time.
Any other details that are important - How long did it last? Direction of travel? Was there damage? etc.

Daily Spotter and Co-Op Station Reports


Snowfall Totals using Google Earth or Static Graphics





Climatology from Weather Underground


Escanaba
Houghton
Iron Mountain
Ironwood
Marquette
Menominee
Sault Ste. Marie