Straight line winds hail crop damage
Download
1 / 15

Straight Line Winds, Hail, & Crop Damage - PowerPoint PPT Presentation


  • 99 Views
  • Uploaded on

Straight Line Winds, Hail, & Crop Damage. Nathan Schnur 02/15/2008. Yearly Damage Statistics for Iowa. 2007 Hail - $2,768,390.12 Wind - 6, 163, 356.44 2006 Hail - $1,082,100.54 Wind - $1,483,016.11 2005 Hail - $897,598.88 Wind - $143, 879.78.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Straight Line Winds, Hail, & Crop Damage' - hollis


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.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Straight line winds hail crop damage
Straight Line Winds, Hail, & Crop Damage

Nathan Schnur

02/15/2008


Yearly damage statistics for iowa
Yearly Damage Statistics for Iowa

  • 2007

    • Hail - $2,768,390.12

    • Wind - 6, 163, 356.44

  • 2006

    • Hail - $1,082,100.54

    • Wind - $1,483,016.11

  • 2005

    • Hail - $897,598.88

    • Wind - $143, 879.78

Data taken from the USDA Risk Management Agency @ http://www.rma.usda.gov/


Criteria for severe weather
Criteria for Severe Weather

  • National Weather Service Criteria

    • Hail

      • Dime size or larger

    • Wind

      • 58mph or greater


Hail

  • Comes in many shapes & sizes

    • Pea  Softball

    • Rarely larger than softball

  • Can cause substantial damage to crops

  • Largest hail usually generated in supercell thunderstorms


Right: Record setting hailstone which was 6.5 inches long and 17.3 inches around. It fell June 23, 2003 near Hastings, NE.


Hail damage
Hail Damage and 17.3 inches around. It fell June 23, 2003 near Hastings, NE.

  • Often looks worse than it really is

  • Plants can usually grow back

  • Highest potential for severe

    damage is during flowering

  • Secondary Problems

    • Fungal Infections


Straight line winds
Straight Line Winds and 17.3 inches around. It fell June 23, 2003 near Hastings, NE.

  • Caused by Bow Echo’s, Squall Lines, or Derecho’s

  • Winds which cause most damage are >58mph

    • Derecho winds can be >100mph

  • Damage to crops can be extensive

  • Macro and Microbursts also cause damage

    • Winds often >70mph


Straight line wind damage
Straight Line Wind Damage and 17.3 inches around. It fell June 23, 2003 near Hastings, NE.

  • Damage looks worse than it is in most cases

  • Yield losses vary depending on time of damage

  • Can lead to secondary problems

    • Goose-necking

    • Increased risk for fungal infection

    • Decreased nutrient and water uptake

    • Causes harvest problems


Day after storm July 10th and 17.3 inches around. It fell June 23, 2003 near Hastings, NE.

Same field July 16th


References
References and 17.3 inches around. It fell June 23, 2003 near Hastings, NE.

Photos Courtesy of:

  • http://www.flickr.com/photos/wayneklick/133958153/

  • http://www.uvm.edu/~sbraaten/MarbleheadMAhailstones.jpg

  • www.hprcc.unl.edu

  • http://www.agry.purdue.edu/ext/corn/news/articles.00/HailDamage-0522-Gallery.html

  • http://cropwatch.unl.edu/archives/2001/crop01-14.htm

  • http://www.flickr.com/photos/carquestguy/1207484104/

  • http://www.extension.iastate.edu/nwcrops/storm-damage-02.htm

    References:

  • http://www.weather.gov/

  • http://www.spc.noaa.gov/


ad