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Service
Assessments
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The Historic Tornadoes of April 2011
Tornado tracks and damage pictures from eastern Mississippi, central and
northern Alabama, and northern Georgia. Map: National Severe Storms Laboratory. Photos:
NWS Birmingham, AL; NWS Huntsville, AL; NWS Peachtree City, GA; Richard Okulski;
Kevin Scharfenberg; Gary Woodall
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NWS conducts Service Assessments to evaluate its performance after significant hydrometeorological, oceanographic, or geological events resulting in warning or other operational activities. Assessments may be initiated when one or more of the following criteria are met:
- Major economic impact on a large area or population
- Multiple fatalities or numerous serious injuries
- Extensive national public interest or media coverage
- Unusual level of attention to NWS performance
Assessment teams, composed of experts from within and outside the NWS, evaluate activities before, during, and after events to determine the usefulness of NWS products and services. Finally, the team generates a report, which serves as an evaluative tool to identify and share best practices in operations and procedures, and identify and address service deficiencies. The goal of the activity is for the NWS to continuously improve its services to the nation. |
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2005-2009
- South Pacific Basin Tsunami,
September 29-30, 2009
- Southeast United States Floods, September 18-23, 2009
- Mount Redoubt Volcanic Eruptions
March-April 2009
- Central United States Flooding of June 2008
- Mother’s Day Weekend Tornado in Oklahoma and Missouri, May 10, 2008
- Super Tuesday Tornadoes: February 5-6, 2008
- Pacific Northwest Storms of December 1-3,
2007
- Tornadoes in Southern Alabama and
Georgia, March 1, 2007
- Rogers,
MN, Tornado Assessment, September 16, 2006
- Hurricane Katrina, August 23-31, 2005
- West Coast Tsunami Warning:
June 14, 2005
2000-2004
- Hurricane Charley, August 9-15, 2004
- Baltimore Inner Harbor Thunderstorm Event: March 6, 2004
- Intense Space Weather Storms,
October 19 – November 07, 2003
- Hurricane Isabel:
September 18-19, 2003
- Southern California
Wildfires: October 20 to November 3, 2003
- Record
Tornado Outbreaks of May 4-10, 2003
- Super
Typhoon Pongsona: December 8, 2002
- Veterans
Day Weekend Tornado Outbreak
- La
Plata, MD, Tornado Outbreak: April
28, 2002
- Tropical
Storm Allison: Heavy Rains and Floods, Texas and
Louisiana: June 2001
- Northern
Idaho and Western Montana Summer 2000 Wildfires
1995-1999
- Hurricane
Floyd Floods of September 1999
- Oklahoma/Southern
Kansas Tornado Outbreak of May 3, 1999
- South
Texas Floods: October 17-22, 1998 (html)
- Spencer, SD, Tornado:
May 30, 1998 (html)
- Southeast
Tornadoes: April 8, 1998
- The
Ice Storm and Flood of January 1998
- Central
Florida Tornado Outbreak: February 22-23, 1998
- Super
Typhoon Paka: December 2-21, 1997 (html)
-
Central Texas Tornado Outbreak: May 27, 1997
- North
Central U.S. Flooding including the Red River of
the North Basin: April 1997
- Ohio
River Valley Flood: March 1997
- Arkansas Tornado Outbreak:
March 1, 1997
- Hurricane
Fran: August 28-September 8, 1996
- Hurricane
Bertha: July 5-14, 1996
- Ft. Smith
and Van Buren: Arkansas, Tornado of April 21, 1996
- Northeast
United States Flooding: January 1996
- Blizzard
of '96: January 6-8, 1996
- Hurricane
Marilyn: September 15-16, 1995
- Heat
Wave of July 1995
1989-1994
 Most
Assessments are PDFs. Download free PDF Reader.
Service Assessments are part
of the NWS Verification Program.
The NWS Office of the Administrator decides whether to perform an assessment. A report is released
when the Assistant
Administrator for Weather Services has approved it.
If an event does not warrant a
service assessment, but a need
exists to document the event's
data, NWS staff may issue a
Post-Storm
Data Acquisition
report. Single hard copies of older Service Assessments reports may be
available, email:
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| Last Updated:
December 19, 2011
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www.nws.noaa.gov 
