Department of Geological and Atmospheric Sciences

Meteorology 111 - Miscellaneous




Interesting Articles


IEM Climodat Reports


  • IEM Climodat Reports
  • Use this as a guide for your first freeze forecast.
  • Select 'Ames' as your climate station of interest, and 'First Fall Freeze Probabilities' for your report.

Class Presentations



Class Images


Blocks



Class Facts

10+ inch daily snowfall events for Ames:

  • 11" | 1899-12-11
  • 18" | 1900-03-05
  • 11.2" | 1909-03-09
  • 12" | 1928-11-30
  • 12" | 1939-02-28
  • 12" | 1996-01-26
  • 10.2" | 1997-02-04
  • 12" | 1998-03-08

Top November snow events for Ames and Des Moines


Ames
  • 1928-11-30 | 12"
  • 1934-11-30 | 10"
  • 1957-11-18 | 9.5"
  • 1991-11-23 | 7"
  • 1918-11-28 | 6.5"
  • 1983-11-23 | 6"
  • 1932-11-08 | 5.8"

Des Moines
  • 1968-11-10 | 11.8"
  • 1992-11-25 | 9.3"
  • 1893-11-30 | 8"
  • 1972-11-13 | 7.5"
  • 1928-11-30 | 6.9"
  • 1918-11-28 | 6.5"
  • 1932-11-08 | 5.7"
  • 1985-11-30 | 5.6"
  • 1934-11-30 | 5.6"
  • 1991-11-23 | 5.2"
  • 1957-11-18 | 5.2"
  • 1971-11-28 | 5.2"

Class Definitions


  • Dendritic growth layer: Typically between -10 and -20 C. This layer is favorable for dendritic snowflake (large snow flakes) formation if there is sufficient vertical motion and moisture.
  • Omega - Vertical motion: dP/dt, or the how fast pressure changes with time. Sign is opposite of vertical velocity, w, which is dZ/dt.

Meteorological Software Links


Weather News

Daily Weather Story

Click the image to see the most recent NWS weather story for central Iowa.

Low on Ice

How does the current sea ice extent compare to the past?

5-Day QPF

Where is it going to rain or snow in the next week? See the five day QPF from HPC.

Drought Monitor

How this outlook impacts the current drought situation? See the latest drought monitor.

Fall 2015