Supplemental Observer list of Meteorological and Hydrological Criteria (report to NWS Springfield):
For reports only call: 1-800-762-4363
- Identify yourself and your location (observer ID# ); what you have seen or are reporting; where you saw it (direction and distance from a known location, e.g., 3 miles south of Lamar); when you saw it (make sure you note the time of the observation ).
- Any type of severe weather:-tornadoes / hail (any size) / damaging winds
(a.)Tornadoes - A violent rotating column of air touching the ground. It forms a pendant, usually from a cumulonimbus cloud, nearly always starts as a funnel cloud, and is accompanied by a loud roaring noise
(b.)Hail - Precipitation in the form of small balls or other pieces of ice falling separately or frozen in irregular lumps. Estimating hail size : Pea size 1/4 inch; Dime size 3/4 inch; quarter size 1 inch; golfball size 1.75 inch; baseball size 2.75 inch.
(c.)Damaging Winds - Usually 50 mph or greater. Estimating wind speeds: 39-54 mph twigs break off trees and wind generally impedes progress; 55-72 mph damage to chimneys and TV antenna, pushes over shallow rooted trees; 73-112 mph peels surface off roofs, windows break, and light trailers houses pushed or overturned, and automobiles are pushed off roads; 113-157 mph roofs torn off houses, weak buildings and trailer houses destroyed, and large trees snapped and uprooted.
NOTE: Please do not report on nonsevere thunderstorms.
- Any fog reducing visibility to 100 yards or less ("pea soup" fog).
- For those with rain gages, please call, if possible, in any rainfall, 1/10 of an inch or more, that occurred in the past 24 hours (7 am previous day to 7 am present day). Please call in these amounts between 7-9 AM if possible.
Please report to us immediately whenever rainfall in excess of 3/4 inch per hour (torrential downpour) is occurring, or if you receive 2 inches of rain over a 6 hour period.
- If snow is occurring, please call in snowfall amounts that have fallen over the last 24 hours or since the last observation in Inches and Tenths of Inches, and when snowfall approaches: 1 inch per hour or when accumulating snowfall reaches 3, 6, and 8 inches.
Total snow depth is simply the amount of snow on the ground at the time of the observation and is reported in Whole Inches. Snow should be measured in an area of undisturbed accumulation, preferably on flat or smooth unpaved surfaces. To measure snow, use a standard ruler or yardstick. Measure the depth in several locations, preferably at points where the snow has fallen and is undisturbed by the wind. Take the average of the measurements - this will be the snowfall of newly fallen snow or snow depth of existing snow on ground.
- Report any freezing rain or freezing drizzle which freezes upon impact with the ground or other exposed objects, such as your car, walkway, driveway, metal objects, etc.
- Heavy rainfall, even for short periods, may quickly be followed by flash floods. Report any flooding, including ponding of water on roadways, water flowing over low water crossings, or rivers/creeks out of bank or approaching bankfull.
- Any weather related hazards you believe endangers you and your community.
- If you have a maximum / minimum thermometer, call in ( between the hours of 7 a.m. and 9 a.m. ) the previous day's high / current morning's low temperature.
- If you have a NOAA Weather Radio, please contact us if you have the following problems:
- excessive static or noise
- isruption in service/off the air
- lack of a tone alert on Wednesday's test between 11am and noon or during severe weather episodes when warnings are issued
- Enclosed in this package is a Supplemental Observer Log. Simply log the data that you can provide into their proper place. As a suggestion, please make copies of this log sheet so that you have a template for additional months. In addition, the log sheet will help organize your data into a format when calling in reports to us.
- (Note: If the forecaster in charge at the NWS suspects severe or hazardous weather in your area, he may call during the time specified on your volunteer survey letter.)
- The Internet contains many sources for weather and climatology information, and weather equipment. Just do a search on WEATHER, METEOROLOGY, or CLIMATOLOGY to access over 700 sites dealing with weather. A commercial source for inexpensive weather equipment is Wind and Weather. For a catalog call 1-800-922-9463.
- If you need further information or want to E-mail us, please visit our website: