Severe Weather Spotters


Reporting Procedures

WEATHER EVENTS TO REPORT

 

Hail Size Estimates
Pea (0.25")
Penny (0.75")
Quarter (1.00")
Half Dollar (1.25")
Golf Ball (1.75")
Tennis Ball (2.50")
Baseball (2.75")
Grapefruit (4.00")

Don't report hail as marble size...marbles come in too many different sizes.



Wind Speed Estimates

25-31 mph - Large branches in motion; whistling in telephone wires
32-38 mph - Whole trees in motion
39-54 mph - Twigs break off trees; wind impedes walking
55-72 mph - Damage to chimneys and TV antennas; shallow rooted trees pushed over
73-112 mph - Roofing peeled off; mobile homes overturned
>113 mph - Roofs torn off houses; weak buildings and mobile homes destroyed; large tees uprooted.

 


Hydrologic Events to Report

RISING WATER -Rapid rise to within a foot of bankfull

WATER OVER BANKFULL
-River over bankfull
-Water over road

 

Additional Hydro Reporting Procedures

-Name of stream or river and location of problem area.

-Water level relative to bankfull

-Trend (e.g., rising, falling, steady)

-Cause if known (e.g., ice jam, dam break)

-Degree of threat

 

REMINDERíS OF OTHER WEATHER TO REPORT

-HEAVY RAIN...1/2 INCH OR MORE

-ANY FREEZING RAIN

 

SNOWFALL REPORTING INTERVALS:
-FIRST 4 INCHES (APPROACHING ADVISORY CRITERIA)
-7 INCHES (WARNING CRITERIA)
-12 INCHES & EVERY 6 INCHES THERE AFTER

***WHEN EVENT IS OVER CALL UP WITH A TOTAL FOR AMOUNTS OF 4 INCHES OR GREATER***