• Local Station Perspective
• Regional Climate Perspectives
• Streaks and Threshold Perspectives
• Most Similar Cities:
  The list of cities that can be used for the 'Most Similar City':

A publication for the American Meteorological Society's 2011 Annual Meeting will soon be available:
Climate Perspectives: A New Tool for Real-Time Monitoring of the Climate across the Southeastern U.S
Chip Konrad, Ryan Boyles, John McGuire, and William Schmitz

Description
Ranks a period of observations against:

• Climate normals (1981-2010) at cities along the U.S. East Coast and Southeast.
• Historical observations for the same periods at the same station (or closest station with a period of record).

How to Use

1. Choose your date.
2. Select a predefined city to automatically load. Or, choose another location using the map (double-click) or address bar.
3. Select the station closest to the location provided.
4. Update the display

Station Calculations
Station data is recorded for every day according to its observation time. An exception to this is the following:
COOP Stations with observation times between 12:30a and 11:30a:

• The minimum temperature used is from that day's observation
• The maximum temperature and precipitation used is from the NEXT day's observation

Station Data
Station results are returned in °F for temperature, and inches for precipitation.
Data percentage is the total number of daily observations that existed in the time period. Any codes that follow this percentage reflect:

• O: Number of daily observations
• H: Number of days of using hourly observations
• F: Number of days of using NDFD forecasts
  

Station Requirements

• 20+ years of parameter data for each station
• 90% of data existing for each period

Advanced Usage
The following additions to the URL string are advanced options. Please note that usage of these may result in a significant increase of page load time.

• Custom Period Search:
  http://www.sercc.com/perspectives?user=true
• Default COOP or ThreadEx station:(More on ThreadEx)
  http://www.sercc.com/perspectives?station=317069

Description
Map display of individual 'Local Station Perspectives' historical perspectives. Displays include displaying raw values, historical rankings, and historical percentiles

How to Use

1. Choose your variable.
2. Select a date.
3. Select a period.
4. Choose a display type.
5. Update the display

Station Calculations
See Local Station Perspective above.

Station Requirements
See Local Station Perspective above.

Advanced Usage
The following additions to the URL string are advanced options. Please note that usage of these may result in a significant increase of page load time.

• Older Prepopulated dates (since Jul 13th, 2019):
  http://www.sercc.com/perspectivesmap?date=YYYY-MM-DD
• Printing The Map:
  Use your computer's 'Print Screen' function to paste into an image editor or document editor of your choice.

Description
Threshold Perspectives:
The number of days that meet a given threshold for a period are displayed. These values are also ranked versus the same station's history for each period. The difference in the period and historical averages for the threshold is also shown.
Streak Perspectives:
The number of consecutive days that meet a given threshold for a period are displayed. These values are also ranked versus the same station's history for each period. The difference in the period and historical averages for the threshold is also shown.

How to Use

1. Choose your date.
2. Select a predefined city to automatically load. Or, choose another location using the map (double-click) or address bar.
3. Select the station closest to the location provided.
4. Determine the variable to use.
5. Update the display

Station Calculations
Station data is recorded for every day according to its observation time. An exception to this is the following:
COOP Stations with observation times between 12:30a and 11:30a:

• The minimum temperature used is from that day's observation
• The maximum temperature and precipitation used is from the NEXT day's observation

As of May 13, 2015 the threshold 85F was added. This will not be available for dates before this time period.

http://www.sercc.com/thresholds

Station Requirements

• 20+ years of parameter data for each station
• 75% of each year's data for each period must exist for ranking

Advanced Usage
The following additions to the URL string are advanced options. Please note that usage of these may result in a significant increase of page load time.

• Custom Period Search:
  http://www.sercc.com/thresholds?user=true
• Default COOP or ThreadEx station:(More on ThreadEx)
  http://www.sercc.com/thresholds?station=317069
• Default Variable:
  Select between the following: maxtemp,mintemp,precip,
  To default to a variable, you can add one of the following:
  http://www.sercc.com/thresholds?var=maxtemp
• Custom Thresholds:You can add your own custom thresholds. You must also specify the variable, as well as the units.
  Units must be one of the following: in for precipitation, F or C for temperature
  Thresholds must one of the following:
  • >= (Greater than or equal to)
  • > (Greater than)
  • < (Less than)
  • <= (Less than or equal to)
  • != (Not equal to)
  • = (Equal to)
  Examples:
  http://www.sercc.com/thresholds?var=mintemp&thresh=>=70F,>=60F
  http://www.sercc.com/thresholds?var=precip&thresh==0.333in

City, State (COOP ID)

• Anchorage,AK (500280)


• Fairbanks,AK (502968)


• Juneau,AK (504100)


• Birmingham,AL (010831)


• Phoenix,AZ (026481)


• Tucson,AZ (028820)


• Eureka,CA (042910)


• Los Angeles,CA (045114)


• Oakland,CA (046335)


• Palm Springs,CA (048892)


• Sacramento,CA (047630)


• San Diego,CA (047740)


• San Francisco,CA (047769)


• Denver,CO (052211)


• Hartford,CT (069704)


• Washington (Dulles),DC (448903)


• Washington (Dulles),DC (448903)


• Washington (Reagan),DC (448906)


• Washington (Reagan),DC (448906)


• Fort Myers,FL (083186)


• Jacksonville,FL (084358)


• Key West,FL (084570)


• Miami,FL (085663)


• Orlando,FL (086628)


• Tampa,FL (088788)


• Atlanta,GA (090451)


• Savannah,GA (097847)


• Honolulu,HI (511919)


• Louisville,KY (154954)


• New Orleans,LA (166295)


• Boston,MA (190770)


• Baltimore,MD (180465)


• Houlton,ME (173892)


• Portland,ME (176905)


• Detroit,MI (202103)


• Minneapolis,MN (215435)


• Kansas City,MO (234358)


• St Louis,MO (237455)


• Billings,MT (240807)


• Helena,MT (244055)


• Charlotte,NC (311690)


• Raleigh,NC (317069)


• Wilmington,NC (319457)


• Bismarck,ND (320819)


• Albuquerque,NM (290234)


• Las Vegas,NV (264436)


• Buffalo,NY (301012)


• New York City,NY (305801)


• Cincinnati,OH (151855)


• Cleveland,OH (331657)


• Oklahoma City,OK (346661)


• Portland,OR (356751)


• Philadelphia,PA (366889)


• Pittsburgh,PA (366993)


• San Juan,PR (668812)


• Providence,RI (376698)


• Charleston,SC (381544)


• Memphis,TN (405954)


• Dallas,TX (412244)


• El Paso,TX (412797)


• Houston,TX (414300)


• San Antonio,TX (417945)


• Salt Lake City,UT (427598)


• Norfolk,VA (446139)


• Richmond,VA (447201)


• Roanoke,VA (447285)


• Seattle,WA (457473)


• Milwaukee,WI (475479)


• Charleston,WV (461570)


• Yellowstone,WY (486845)