courtesy of the Parks College Parachute Research Group, www.pcprg.com
written by Gary Peek, peek@pcprg.com
Based on data from 2018Z, valid from 2100Z, for use from 2000-0300Z (UTC)
Winds aloft data changes only four times per day.
There is no need to check winds aloft more often than that.
See http://aviationweather.gov/products/nws/winds/info.php
Currently 04/21/2014 at 0159Z (UTC), 04/20/2014 at 2059 EST
| . | Reporting Station BOS | Reporting Station BDL | Reporting Station BML | ||||||
| Altitude | Direction | Speed | Temp. | Direction | Speed | Temp. | Direction | Speed | Temp. |
| 30000 |  | 48 Knots 55.2 MPH | -43 C -45.4 F | | 44 Knots 50.6 MPH | -43 C -45.4 F | | 59 Knots 67.8 MPH | -45 C -49.0 F |
| 24000 | | 31 Knots 35.6 MPH | -28 C -18.4 F | | 33 Knots 37.9 MPH | -28 C -18.4 F | | 50 Knots 57.5 MPH | -29 C -20.2 F |
| 18000 |  | 29 Knots 33.3 MPH | -16 C 3.2 F | | 26 Knots 29.9 MPH | -16 C 3.2 F | | 44 Knots 50.6 MPH | -17 C 1.4 F |
| 12000 |  | 16 Knots 18.4 MPH | -4 C 24.8 F | | 15 Knots 17.2 MPH | -3 C 26.6 F | | 31 Knots 35.6 MPH | -7 C 19.4 F |
| 9000 |  | 13 Knots 14.9 MPH | 1 C 33.8 F | | 10 Knots 11.5 MPH | 2 C 35.6 F | | 19 Knots 21.8 MPH | -2 C 28.4 F |
| 6000 | | 7 Knots 8.0 MPH | 4 C 39.2 F |  | 5 Knots 5.8 MPH | 5 C 41.0 F |  | 16 Knots 18.4 MPH | 1 C 33.8 F |
| 3000 |  | <5 Knots <6 MPH | N/R |  | 5 Knots 5.8 MPH | N/R |  | 18 Knots 20.7 MPH | N/R |