1 / 11

Lab 9

Lab 9. November 13, 2013. Meteograms. A time display of weather information for a single observing site. Temperature 21Z? __ Dew Point 6Z? __ Wind Direction 8Z?__ Pressure 03Z? __. 23°F. 6°F. W. 1032mb. Laboratory Exercise 14.10 a & b (20 POINTS!).

yardan
Download Presentation

Lab 9

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Lab 9 November 13, 2013

  2. Meteograms A time display of weather information for a single observing site

  3. Temperature 21Z? __ • Dew Point 6Z? __ • Wind Direction 8Z?__ • Pressure 03Z? __ 23°F 6°F W 1032mb

  4. Laboratory Exercise 14.10 a & b (20 POINTS!) • Researching the frequency of large hail (>2” diameter) in each U.S. State • http://www.ems.psu.edu/~nese/hail.htm • Use Figure 15.40b for Part b. • Part a. • Maine: ___ occurrences • Part b. • Area of Maine: _____ 10,000 mi2 • Normalized Hail Occurrences = = 2.3 occurrences per 10,000 mi2 8 3.5 (Using Figure 15.40b)

  5. Map of U.S.

  6. Tornadoes – Suction Vortices Some of the most violent tornadoes contain smaller whirls that orbit around the center of the parent tornado, guided by the parent’s counterclockwise spin - Multi-Vortex Tornadoes. Suction Vortices – smaller, whirling offspring within a larger tornado Cycloid – looping damage path caused by a suction vortex

  7. Tornadoes – Suction Vortices Source: wxbrad

  8. Tornadoes – Suction Vortices • Calculating maximum wind speed of multi-vortex tornado • Rotational winds = 90 mph • Moving North at 10 mph • Suction Vortex wind speed = 35 mph • Maximum wind speed = (90 + 10 + 35) mph = 135 mph

  9. Enhanced Fujita Scale Source: weather.com

  10. Determining Wind Speed of Tornadoes Photogrammetry – frame-by-frame analyses of flying debris in a tornado yield the distances objects move over a specific period of time Wind speeds can be calculated from these distances and time Velocity = 23 mph

  11. Lab 9 Assignment 13.10 a, b, c 14.3 a, b 14.10 a, b (use fig. 15.40b for part b) (20 points!) 15.1 a, d (see p. 662) 15.5 a, b, c 15.6 Dillon’s OFFICE HOURS Thursday; 6ish-7:30; 6th floor Walker; e-mail too! Ask Paul or Matt if unsure of theirs!

More Related