1. CITIZEN WEATHER OBSERVER PROGRAM Russ Chadwick, NOAA Earth System Research Laboratory CWOP – 3300 citizen weather stations worldwide

2. Purpose of CWOP Private-public partnership with goals: 1. Collect weather data contributed by private citizens; 2. Make these data available for public and private weather services; 3. Provide feedback to the contributors so they have tools to improve data quality.

3. CWOP Data Flow Mobile station RF I-Gates RF RF Weather station RF APRS-IS APRS Servers Weather station findu.com database GSD Central Facility MADIS CWOP database MesoWest OtherUsers NCEP AWIPS WFOs UCAR

4. Private-Public Partnership • Data Collection (privately owned and operated) • WX stations operated by private citizens • Data transfer by APRS-IS (internet service) • Data management by findU.com • Data Distribution(provided by NOAA) • Data distribution by MADIS • Data quality checking by QCMS • NOAA GSD Central Computer Facility

6. Hurricane Charley over Orlando, FL August 14, 2004 at 0225UTC

7. David Riester’s KD4MRL CWOP weather station

8. Bill Bruno’s KB2RC CWOP weather station 6.6 miles to the ENE

9. Circulation associated with Charley near Orlando, Florida H0295 CW0927 CW2363 WA4LZC KC6TYC KD4WLI CW0587

10. Hurricane Jeanne hour 1

11. Hurricane Jeanne hour 2

12. Hurricane Jeanne hour 3 Emillo Sanseviero’s CW0262 CWOP Weather Station David Lane’s K4ZZR CWOP Weather Station

13. Hurricane Jeanne hour 4

14. Hurricane Jeanne hour 5

15. Tropical Storm “Gaston” August 30, 2004 o CW1481 Richmond Area CWOP Observations

16. CWOP Helps Measure Extreme Temperatures Over Northern New York and New England Combined Stations CWOP Only January 28, 2005

17. BALTIMORE HARBOR WATER TAXI ACCIDENT At about 4:00 PM EST on March 6, 2004, a sudden gust of wind overturned a water taxi carrying sightseers around Baltimore Harbor. There were five fatalities.

18. Location of Gus Campbell’s CW1550 CWOP Weather Station Five Miles WSW of the Water Taxi Accident Site Accident Site CW1550

19. Wind reported by Gus Campbell’s CW1550 CWOP weather station on UTC day March 6, 2004, showing 53 mph wind gust reported at 3:51 PM EST.

20. Main Take-Home Points • If you are in a sparsely populated area, then your station may give the only weather reports for many miles in any direction; there are many gaps of over 100 miles in US. • If you are in a densely populated area, then your station may be the only weather station that sees a small scale weather event (like the Baltimore Harbor gust). • In all cases, running a weather station is great way to “give back” to your local community.

21. How to join CWOP and send in weather data You need: computer with internet access, weather station hardware and weather station software for CWOP Enter www.cwop.net (or cwop.net) into your browser and click on “How to join CWOP” and follow the directions. If you have any questions, send them to: dave@cwop.info or russ@cwop.net

22. Southwest USA CWOP Stationsincl. Terrie Miller’s CW3724 CWOP Station CW3724

23. Terrie Miller’s CW3724 CWOP Weather Station Pressure Quality Checking

24. Terrie Miller’s CW3724 CWOP Weather StationDew Point Quality Checking

25. Terrie Miller’s CW3724 CWOP Weather Station Temperature Quality Checking

26. Terrie Miller’s CW3724 CWOP Weather Station Daytime Temperature Quality Checking

27. Terrie Miller’s CW3724 CWOP Weather Station Nighttime Temperature Quality Checking

28. Terrie Miller’s CW3724 CWOP Weather Station Wind Speed Quality Checking

30. Anemometer Housing and Internal Moving Parts

31. Anemometer Printed Circuit Board

32. Relative Humidity/Temperature Sensor

33. Radiation Shield and T238 Interface Board