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This is a Public Service Message Brought to you by the Tmax Weather Center KRGH-Spearfish, SD, and its associates. This is a volunteer station! Thank you for visiting our fine weather page today, some of the data collected by this station is not exclusively from this station, some data, radar, and geography reports come from their respective agencies, which are listed below in the links section! Thanks and have a great weather day!
Record high temperature 110.1°F Record low temperature -18.4°F Record high gust 48.5 mph Record high average 42.3 mph Record daily rain 3.03 in. Record low windchill -31.4°F Record high barometer 30.623 in. Record low barometer 25.632 in.
Daily high pressure 30.083 in. Daily low pressure 29.995 in. Daily low windchill 57.0°F Daily high heat index 77.1°F Daily high gust speed 9.2 mph E Daily high average speed 7.2 mph ESE
Tmax Weather Center Spearfish, SD 57783
LAST READING AT TIME: 22:13 PM DATE: July 03 2008
Current WeatherNight time/Dry Current Temperature 62.2°F (16.8°C), Apparent temp 63.0°F
Maximum Temperature (since midnight)73.9°F at: 3:21 PM Minimum Temperature (since midnight)57.0°F at: 3:57 AM
Average windspeed (ten minute)2.3 mph Wind Direction (ten minute)SSW (198°)
Windchill Temperature 62.2°F Maximum Gust (last hour)8.0 mph at: 9:44PM
Maximum Gust (since midnight)9.2 mph at: 2:37 PM Maximum 1 minute average (since midnight)7.2 mph at: 2:58 PM
Rainfall (last hour)0.00 in. (0.0 mm) Rainfall (since midnight)0.28 in. (7.0 mm) at 5:35 AM
Rainfall This month 0.31 in. (8.0 mm) Rainfall To date this year 15.49 in. (393.4 mm)
Maximum rain per minute (last hour)0.00 in/min Maximum rain per hour (last 6 hours)0.00 in/hour
Yesterdays rainfall 0.04 in DewPoint 57.3°F (Wet Bulb :59.4°F )
Humidity 84 %, Humidex 68.4°F Barometer corrected to msl29.995 in. (1015.7 hPa) (QNH 0.000 in.)
Pressure change 0.00 in. (last hour) Trend (last hour)STEADY
Pressure change (last 12 hours)-0.06 in Pressure change (last 6 hours)+0.00 in

Serving Spearfish, and Surrounding Communities, With Fast, Accurate and Up To Date Weather Data.

Current LIVE Conditions

During the year the Heat Index & Wind Chill will change automatically based on current conditions.

This page is updated from recent data collected by a WMR968 weather station Use the Reload or Refresh facility on your browser to retrieve the latest data.

Status report of weather station: Active 24/7 Since 19:45hrs 01Jan2002

United States Amber Alert System:

National Homeland Security Knowledgebase



smokeybear.gif (11105 bytes) smokeybear.gif (11105 bytes)




ONLY YOU CAN PREVENT FOREST FIRES
The Current Fire Danger Index for Today:

COOPERATING AGENCIES

Northern Great Plains Interagency Dispatch Center
4250 Fire Station Rd. Suite 2
Rapid City, SD 57703-8714
605-393-8017
Fax 605-393-8030

Dispatch Hours 0730-1730

Fire Weather Index As Generated By This Station


This Station produces this image from the raw data it collects; it is not representative of the images above

Want to know what your barometric pressure is corrected for your elevation above sea level, well we got it for you, go to Barometric Pressure Adjust page and check it out.


 

CURRENT CONDITIONS AROUND SOUTH DAKOTA

Click for Aberdeen, South Dakota Forecast Click for Brookings, South Dakota Forecast Click for Buffalo, South Dakota Forecast
Click for Custer, South Dakota Forecast Click for Ellsworth Air Force Base, South Dakota Forecast Click for Huron, South Dakota Forecast
Click for Philip, South Dakota Forecast Click for Mitchell, South Dakota Forecast Click for Mobridge, South Dakota Forecast
Click for Pierre, South Dakota Forecast Click for Rapid City, South Dakota Forecast Click for Sioux Falls, South Dakota Forecast
Click for Sisseton, South Dakota Forecast Click for Spearfish, South Dakota Forecast Click for Spencer, South Dakota Forecast
Click for Watertown, South Dakota Forecast Click for Winner, South Dakota Forecast Click for Yankton, South Dakota Forecast

Current Video Image of Spearfish, SD


Brought to you By the South Dakota Department of Transportation, South Dakota 511 Road Condition Hotline, and Safe Travel USA, a Meridian Environmental Technology Inc.

Click for Spearfish, South Dakota Forecast

300 Mile Radar Provided Courtesy of Weather Underground, (Ground Clutter Removed)



Storm Tracking System




Tornadic Thunderstorm (Tornadic Vortex Signature) Mesocyclone (Possible Tornado) Hail Producing Thunderstorm

If a triangle is shown in this field, it indicates NEXRAD detection of a possible tornadic cell this tornado may or may not be on the ground, (this "detection" is called the tornado vortex signature).

Define Mesocyclone: A mesocyclone is a vortex of air, approximately 2 to 10 km in diameter (the mesoscale of meteorology), within a convective storm. That is, it is air that rises and rotates around a vertical axis, usually in the same direction as low pressure systems in a given hemisphere. They are most often cyclonic, that is, associated with a localized low-pressure region within a severe thunderstorm. Such storms can feature strong surface winds and severe hail. Mesocyclones often occur together with updrafts in supercells, where tornadoes may form. Mesocyclones are believed to form when strong changes of wind speed and/or direction with height ("wind shear") sets parts of the lower part of the atmosphere spinning in invisible tube-like rolls. The convective updraft of a thunderstorm is then thought to draw up this spinning air, tilting the rolls' orientation upward (from parallel to the ground to perpendicular) and causing the entire updraft to rotate as a vertical column. Mesocyclones are normally relatively localized: they lie between the synoptic scale (hundreds of kilometers) and small scale (hundreds of meters). Radar imagery is used to identify these features. An area of vertical atmospheric rotation in supercell thunderstorms, which signals the threat of a possible tornado.

If a yellow-filled square appears, the storm has a good chance of containing large hail. Click the above map to find out.

WARNING:

IF ANY OF THESE SIGNATURES APPEARS ON THE ABOVE RADAR, SEEK SHELTER IMEDIATLY, INSIDE A STUDEY STRUCTURE, STAY AWAY FROM WINDOWS, AND DO NOT GO OUT IN THE STORM. IF A TORNADIC OR MESOCYCLONIC ICON APPEARS NEAR YOUR LOCATION SEEK SHELTER WITHIN A BASEMENT, IF A BASEMENT IS NOT AVAILABLE SEEK SHELTER IN THE INNER MOST PART OF THE STRUCTURE (AN INTERIOR BATHROOM OR BEDROOM WITH THE LEAST AMOUNT OF WINDOWS AND PUTS THE MOST WALL BETWEEN YOU AND THE STORM), IF YOU ARE IN A MOBILE HOME, OR AUTOMOBILE ABANDON THEM AND SEEK SHELTER IN A STURDY STRUCTURE (TYPICALLY A STORM SHELTER), DO NOT SEEK SHELTER UNDER HIGHWAY OVERPASSES THIS OFFERS NO PROTECTION WHATSOEVER; YOUR CAR ALSO DOESN’T PROVIDE PROTECTION. IF A STRUCTURE IS NOT AVAILABLE LYE FLAT IN A RAVINE OR LOW DITCH, COVERING YOUR HEAD AND NECK. AS WITH ANY STORM STAY AWAY FROM WINDOWS AND TREE'S AVOID GOING OUTSIDE TILL THE DANGER HAS PAST. FLASH FLOODING CAN OCCUR WITHOUT WARNING FROM A HEAVY THUNDERSTORM, AND THE THUNDERSTORM DOESN'T HAVE TO BE OVER YOU TO CAUSE FLASH FLOODING DOWNSTREAM. DO NOT WALK THRU MOVING WATER. SIX INCHES OF MOVING WATER CAN MAKE YOU FALL. IF YOU HAVE TO WALK IN WATER, WALK WHERE THE WATER IS NOT MOVING. USE A STICK TO CHECK THE FIRMNESS OF THE GROUND IN FRONT OF YOU. DO NOT DRIVE INTO FLOODED AREAS. IF FLOODWATERS RISE AROUND YOUR CAR, ABANDON YOUR CAR AND MOVE TO HIGHER GROUND IF YOU CAN DO SO SAFELY. YOU AND YOUR VEHICLE CAN BE QUICKLY SWEPT AWAY. DO NOT COME OUT OF YOUR SAFE PLACE UNTILL THE ALL CLEAR HAS SOUNDED OR SUFFICIENT TIME HAS PASSED FOR THE STORM TO COMPLETELY HAVE PASSED, ALWAYS KEEP A NOAA RADIO WITH FRESH BATTERIES, AND OR A RADIO TUNED TO LOCAL CHANNELS HANDY TO LISTEN IN ON NEWS REPORTS INCASE THE ALL CLEAR SIRENS WERE TAKEN DOWN OR DAMAGED IN THE STORM. THOSE WHO HEED THESE WARNINGS WILL TELL YOU IT WILL SAVE YOUR LIFE. THERE IS NO SUCH THING AS BEING TOO PREPARED.

For Further Information and Definitions goto Tmax Weather Center Definitions Page


Spearfish Weather Up Close (Ground Clutter Removed)


Regional Radar


Current U.S. Weather
Current Surface Map

Current U.S. Weather Temprature Map
Current Surface Tempratures

Current U.S. Weather Heat Index
Current Heat Index Factors

Current U.S. Weather Humidity
Current Humidity

Current U.S. Weather Dewpoint
Current Dewpoint

Current U.S. Weather Wind Report
Current Wind and Gust Report

Current U.S. Weather Sat Image
Current U.S. Visable Satellite Image

Current U.S. Weather Sat Image
Current U.S. UV Index

Current U.S. Weather Sat Image
Flu Information

Current U.S. Air Quality
Air Quality Information


Check your Area with this Map
US Severe Weather Map

Click on a colored region of the map for details.






The data is logged at two-minute intervals, but there is data recorded every minute. Best viewed in 800 x 600 and True color.

Use the RELOAD facility on your browser to retrieve the latest data.

Space Weather Provided by NOAA / Space Weather Prediction Center


Realtime Solar Winds

Current Auroral Map

Current Imgage of the Sun

Earthquake Image Map Provided By the USGS (United States Geological Survey)

US Recent Earthquake Map
10-degree map centered at lon=-95 lat=27 10-degree map centered at lon=-100 lat=27 10-degree map centered at lon=-105 lat=27 10-degree map centered at lon=-110 lat=27 10-degree map centered at lon=-115 lat=27 10-degree map centered at lon=-120 lat=27 10-degree map centered at lon=-125 lat=27 10-degree map centered at lon=-70 lat=27 10-degree map centered at lon=-75 lat=27 10-degree map centered at lon=-80 lat=27 10-degree map centered at lon=-85 lat=27 10-degree map centered at lon=-90 lat=27 10-degree map centered at lon=-95 lat=32 10-degree map centered at lon=-100 lat=32 10-degree map centered at lon=-105 lat=32 10-degree map centered at lon=-110 lat=32 10-degree map centered at lon=-115 lat=32 10-degree map centered at lon=-120 lat=32 10-degree map centered at lon=-125 lat=32 10-degree map centered at lon=-70 lat=32 10-degree map centered at lon=-75 lat=32 10-degree map centered at lon=-80 lat=32 10-degree map centered at lon=-85 lat=32 10-degree map centered at lon=-90 lat=32 10-degree map centered at lon=-95 lat=37 10-degree map centered at lon=-100 lat=37 10-degree map centered at lon=-105 lat=37 10-degree map centered at lon=-110 lat=37 10-degree map centered at lon=-115 lat=37 10-degree map centered at lon=-120 lat=37 10-degree map centered at lon=-125 lat=37 10-degree map centered at lon=-70 lat=37 10-degree map centered at lon=-75 lat=37 10-degree map centered at lon=-80 lat=37 10-degree map centered at lon=-85 lat=37 10-degree map centered at lon=-90 lat=37 10-degree map centered at lon=-95 lat=42 10-degree map centered at lon=-100 lat=42 10-degree map centered at lon=-105 lat=42 10-degree map centered at lon=-110 lat=42 10-degree map centered at lon=-115 lat=42 10-degree map centered at lon=-120 lat=42 10-degree map centered at lon=-125 lat=42 10-degree map centered at lon=-70 lat=42 10-degree map centered at lon=-75 lat=42 10-degree map centered at lon=-80 lat=42 10-degree map centered at lon=-85 lat=42 10-degree map centered at lon=-90 lat=42 10-degree map centered at lon=-95 lat=47 10-degree map centered at lon=-100 lat=47 10-degree map centered at lon=-105 lat=47 10-degree map centered at lon=-110 lat=47 10-degree map centered at lon=-115 lat=47 10-degree map centered at lon=-120 lat=47 10-degree map centered at lon=-125 lat=47 10-degree map centered at lon=-70 lat=47 10-degree map centered at lon=-75 lat=47 10-degree map centered at lon=-80 lat=47 10-degree map centered at lon=-85 lat=47 10-degree map centered at lon=-90 lat=47 10-degree map centered at lon=-130 lat=55 10-degree map centered at lon=-140 lat=55 10-degree map centered at lon=-150 lat=55 10-degree map centered at lon=-160 lat=55 10-degree map centered at lon=-170 lat=55 10-degree map centered at lon=-180 lat=55 10-degree map centered at lon=-130 lat=60 10-degree map centered at lon=-140 lat=60 10-degree map centered at lon=-150 lat=60 10-degree map centered at lon=-160 lat=60 10-degree map centered at lon=-170 lat=60 10-degree map centered at lon=-180 lat=60 10-degree map centered at lon=-130 lat=65 10-degree map centered at lon=-140 lat=65 10-degree map centered at lon=-150 lat=65 10-degree map centered at lon=-160 lat=65 10-degree map centered at lon=-170 lat=65 10-degree map centered at lon=-180 lat=65 10-degree map centered at lon=-130 lat=70 10-degree map centered at lon=-140 lat=70 10-degree map centered at lon=-150 lat=70 10-degree map centered at lon=-160 lat=70 10-degree map centered at lon=-170 lat=70 10-degree map centered at lon=-180 lat=70 10-degree map centered at lon=-157 lat=20 10-degree map centered at lon=-66 lat=18 Advanced National Seismic System Homepage Local Timezone Times

Current Geological Activity Data from station RSSD (Black Hills, South Dakota, USA)

Subtract 6 Hrs to get Local Standard Time, and 7 hrs to get Daylight Savings time Corrections

Please note: When you see a ground shaker on this data map, it does not necessarily indicate a seismic event has occurred here, this graph picks up events from great distances away, this is how they confirm a seismic events magnitude, by gathering information from many stations that pick it up, this tells them how far the event traveled, was felt, or was recorded. You can follow this address for a history of South Dakota Earthquakes Here There have been 80 recorded earthquakes with epicenters in South Dakota. The most recent was Wednesday February, 07 2007 at 03:36AM 6 Miles South East of New Underwood South Dakota in Pennington County. It registered 3.1 on the Richter scale.



Spearfish Creek Advanced Hydrologic Prediction Service Provided by The USGS

Current Disaster Information World Wide View

National Association of Radio-Distress Signalling and Infocommunications

Emergency and Disaster Information Services (EDIS)

United States/Canada

World

Please note: When you see information on the above disaster map it doesn’t mean it is occurring at present or in real time, it can sometimes takes days for a disaster to take place, therefore you will see the disaster over several days and not just at one. This information is provided as is without any warranty to accuracy or timeliness, and does not constitute a general contract with Tmax Weather Center or its Affiliates. TMWC was asked to carry this site to keep you informed of world wide disasters in progress, and makes no claims otherwise.

WEATHER UPDATE SCHEDULE:

This weather station is connected directly to the internet, updates occur every 3 seconds for the live applets, and every 1 minute for the rest of the page. Please check the web page often or press refresh on your browser for the latest conditions, also you may leave this page open it is equipped with an auto-refresh, which occurs every few minutes from the time of load, however I have had to start limiting how many people can stay logged in as we have a few that have ultra high speed connections that are over-running the little guys needing to get in and get their information. So during storms, severe weather, please login, look at what ya want then log out, it would be greatly appreciated. During nice weather days I don't mind you leaving the page open constantly, when "the do not leave page open" images are flashing please close your browser, thanks. I will ban users for staying connected for longer then 24hrs, there is no sense in being logged in non-stop for over 24hrs. This station is operational 24 Hrs a day, sometimes updates are missed due to programming changes, but no changes shall take place during an active warning or severe weather event (unless emergency steps are required). Updates to the programming shall occur on non-event weather days. Maintenance on this server occurs between 1am and 2am Monday Mornings, except during active weather events.



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Known Compatibility Issues: None, Thanks and enjoy the site.

Direct Station Information

  • CITY: Spearfish
  • COUNTY: Lawrence
  • STATE: SOUTH DAKOTA
  • COUNTRY: US
  • TIMEZONE: Mountain
  • CWA: UNR
  • NWS ZONE: SD025 Northern Foot Hills
  • NWS FIRE ZONE: UNR260
  • GACC: RMCC Rocky Mountain
  • SUBGACC: 260
  • MESOWEST INSERT DATE: 2004-07-20
  • LAST CHANGED: 2008-02-04
  • WMO or other ID: 9999999
  • CWOP or other ID: CW2295
  • WUND or other ID: KSDSPEAR1
  • HAMWX or other ID: KRGHSPEARF
  • ANYWX or other ID: SD-Spearfish

    NOTE: PRECIPITATION OFFSET

    During the Winter Months, precipitation amounts may be off due to freezing conditions, and or the rain gauge fills with snow and it doesn't melt till a later time. So be patient eventually all rain information will correct itself. Also the humidity and dew point may be off due to the extreme temperature changes we experience in this location, the sensor gets covered with frost due to high humidity and extreme low temps and stops reading totally. The temperature/humidity sensor since it is 90% exposed, is vulnerable to these conditions. The temperature reads accurately. As the temperatures approaches up to the freezing point the sensors become operational. Sorry for this, but there is not much I can do about mother nature when she decides to freeze something. Also Mother Nature in her cruel irony, has decided to give us lots of ice from time to time, so I have found out the anemometer (wind gauge/wind direction) can get ice covered/snow covered and also stops reading, argh gotta love it? NOT!

    NOTE: MEASURE SNOWFALL PROPERLY

    Measuring snowfall by "inches" is very dependent on the density of the snow, and the freeze thaw cycle compounds the uncertainty, and of course drifting has a big effect. The rough rule of thumb is that the ratio of snow to water is a 10 to 1 Ratio. Simply 10 inches of snow = 1 inch of liquid precipitation. You can use a ruler to measure snowfall as it comes down, but the complication behind that is simple, snow melts on impact with warmer ground till the ground cools down, therefore the total will be off. This station uses a liquid measuring system, as the snow falls into the rain gauge it is melted by a low-level heat source, and it measured as liquid precipitation. Also certain times the temperature is so cold that even the low level heat source does not melt it right away. Since snow is of different densities, and different moisture contents when it falls, liquid measurements are the only truly accurate representation of total true amount of snow that has fallen, even though there may seem to be much more on the ground then the rain gauge says there is. For example, a storm in late February 2004 dropped 24.1 inches of ruler measured snowfall on us, but once liquefied it measured just a little over an inch of liquid precipitation. Does that mean we only got 10 inches, no, but one thing it does prove, measuring with a stick, and measuring with a rain gauge are to very different means by which to do it. Doesn't make shoveling it any less of a headache, nor driving in it any less hazardous. Just remember perceptions of snow, and actualities of snowfall are very different. Just because it looks like a lot, doesn't mean there is a lot. Also of note: This varies with different kinds of snow, and some snows are characterized as "wet snows," and some as "dry snows." The water equivalent of wet snows may be as low as 6 or 8 to 1. This means 6 inches of snow equals one inch of liquid. A dry snow may have a ratio of 20 to 1, or even as high as 50 to 1 in very cold arctic regions. This means it would take 50 inches of snow to equal one inch of liquid. So you decide, it's all a matter of perception, and precipitation.

    ****WEATHER IMAGE OF THE DAY****

    I have decided to put up a Weather Picture Gallery for you at Image of the day Enjoy some of the weather pictures I have up. Thanks

    ATTENTION: WEATHER WATCHERS

    Lawrence County Residents, would you like weather alert email sent directly to your inbox, contact us at Tmax Weather Center Keep up to date on the latest information, alerts, and warnings for your area. Please include your name and general geographic location so I know I am downloading the proper reports for your area. Please make sure to allow this thru any spam filter, and or firewall, if you are a returning member, please make sure you have no blocks against this address, or you will not receive the emails. You can also get weather from NOAA Weather Radio on Station:

    TERRY PEAK near Lead, SD: WXL-23 on 162.525 MHz serves the northern Black Hills:

    Butte County, SD
    Lawrence County, SD
    Western Pennington County, SD
    Crook County, WY
    Northeastern Weston County, WY

    NOAA Live Weather Radio WXL-23 NOAA/NWS Rapid City/Lead, South Dakota & Station KSDSPEAR1 Spearfish, South Dakota



    DISCLAIMER:

    Weather information is provided without warranty of any kind as to accuracy or timeliness, and should never be used to make decisions during a weather emergency.

    COOPERATING AGENCIES LINKS

    National Oceanographic & Atmospheric Administration // National Weather Service // NOAA / Space Weather Prediction Center//
    Weather Display // Weather For You // Ham Weather Radio //
    Citizen Weather Observer Program(CWOP)// Anything Weather // United States Geological Survey//
    South Dakota School of Mines & Technology, Institute of Atmospheric Sciences // Blackhills.Com Internet Services // National Geographic //
    National Association of Radio-Distress Signalling and Infocommunications // AWS Weather and Dept. of Homaland Security // AWS Weather Inc. //
    Rocky Mountain Weather Network(RMWN)//Plains Weather Network(PWN)//Weather Underground//
    National Aeronautics and Space Administration (NASA)//

    Click here for a daily update of the averages/extremes to date for the month

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