Tornadoes
Texas Hazard Mitigation Package (THMP)
SUMMARY DATA
Data Layer: |
Tornadoes (F3 – F5): 1950 - 2003 |
|---|---|
Content: |
Number of tornadoes (Major; F3 or greater - see Fujita scale below) from 1950 to 2003, summarized by county |
| Counties categorized into 5 classes using the natural breaks method | |
Use Notes: |
Identify the relative risk of this hazard, as expressed by historical occurrences by county |
Direct statewide download of this data layer.
User options for downloading this data layer or others by county (or statewide), use the Download Utility |
|
Source: |
Data layer was compiled internally, sourced from NOAA / NCDC -- see Tornado Events data layer below |
Data Layer: |
Tornadoes (F1 – F5): 1950 - 2003 |
|---|---|
Content: |
Number of tornadoes (All; F1 or greater - see Fujita scale below) from 1950 to 2003, summarized by county |
| Counties categorized into 5 classes using the natural breaks method | |
Use Notes: |
Identify the relative risk of this hazard, as expressed by historical occurrences by county |
Direct statewide download of this data layer.
User options for downloading this data layer or others by county (or statewide), use the Download Utility |
|
Source: |
Data layer was compiled internally, sourced from NOAA / NCDC -- see Tornado Events data layer below |
Data Layer: |
Tornado Risk Zones |
|---|---|
Content: |
Relative risk areas from tornadoes |
Zones represent number of recorded tornadoes per 1,000 sq. miles Zone 1 = < 1 |
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Use Notes: |
For purposes of determining home shelter needs, please use this map in conjunction with Wind Risk Zones and the associated risk chart. To do so, click source below and/or overlay both data layers on Map Viewer. |
Direct statewide download of this data layer.
User options for downloading this data layer or others by county (or statewide), use the Download Utility |
|
Source: |
FEMA / Storms & Tornado Shelters |
DETAILED DATA
Data Layer: |
Tornado Events (F3 – F5): 1950 - 2003 |
|---|---|
Content: |
Starting location of tornado occurrences (F3 or greater) since 1950 |
Tornado intensity classified by Fujita scale (F3-F5) Major Tornado categories: F3 – Severe; damage from estimated winds 158 – 206 mph |
|
Use Notes: |
Symbol color delineates intensity classification |
Direct statewide download of this data layer.
User options for downloading this data layer or others by county (or statewide), use the Download Utility |
|
Source: |
National Climatic Data Center / NOAA …Direct link to Storm Events: State = Texas, Event Type = Tornado |
Data Layer: |
Tornado Events (F1 – F5): 1950 - 2003 |
|---|---|
Content: |
Starting location of tornado occurrences (All; F1 or greater) from 1950 to 2003 |
Tornado intensity classified by Fujita scale (F1-F5) All Tornado categories: F0 – Gale; damage from estimated winds 40 – 72 mph |
|
Use Notes: |
Symbol color delineates intensity classification |
Direct statewide download of this data layer.
User options for downloading this data layer or others by county (or statewide), use the Download Utility |
|
Source: |
National Climatic Data Center / NOAA …Direct link to Storm Events: State = Texas, Event Type = Tornado |
OTHER MAPS AND DATA
Federal Emergency Management Agency (FEMA):
https://hazards.fema.gov/femaportal/wps/portal
Note: Launch Map Viewer and choose Basic or Advanced for tornado-related data/maps
United States Geological Survey (USGS)
Natural Hazards Support System
Note: Shows "current" hazards, including tornado warnings in the Weather Warnings layer
Climate Atlas of the United States: Tornado Tracks
(Select Lower 48 States, Other, Tornado Tracks)
gis.ncdc.noaa.gov/website/ims-climatls/index.html
OTHER HAZARD INFO
NOAA Tornadoes
www.noaa.gov/tornadoes.html
National Climatic Data Center: Tornadoes
www.ncdc.noaa.gov/oa/climate/severeweather/tornadoes.html
Tornado Damage Risk Assessment
www.nctcog.org/weather/study/index.asp
FEMA / Tornadoes
http://www.fema.gov/business/guide/section3e.shtm
http://www.disastercenter.com/texas/tornado.html
Texas Disaster Center / Tornadoes
http://www.disastercenter.com/tornado.htm
National Severe Storms Laboratory
Warning Systems Research / Tornadoes
http://www.nssl.noaa.gov/researchitems/tornadoes.shtml
Tornado Background and Research
http://www.fema.gov/pdf/mit/saferoom/netc_pdfs/netc_research.pdf
FEMA / Windstorms/Tornadoes
http://www.fema.gov/pdf/library/ism2_s1.pdf
FEMA / Residential Safe Rooms
http://www.fema.gov/pdf/plan/prevent/bestpractices/resshelter_bkgrdr.pdf
Disaster Help / Tornadoes
https://disasterhelp.gov/portal/jhtml/community.jhtml?community=Tornado&index=0&id=21