FLOOD WATCH NATIONAL WEATHER SERVICE RAPID CITY SD 210 PM MDT THU JUL 2 2009 ...HEAVY RAIN POSSIBLE THIS AFTERNOON INTO TONIGHT... SDZ024>026-028>031-072>074-030415- /O.CON.KUNR.FF.A.0002.000000T0000Z-090703T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ NORTHERN BLACK HILLS-NORTHERN FOOT HILLS-RAPID CITY- CENTRAL BLACK HILLS-SOUTHERN BLACK HILLS-CUSTER CO PLAINS- PENNINGTON CO PLAINS-STURGIS/PIEDMONT FOOT HILLS- SOUTHERN MEADE CO PLAINS-HERMOSA FOOT HILLS- INCLUDING THE CITIES OF...LEAD...DEADWOOD...SPEARFISH... RAPID CITY...HILL CITY...MT RUSHMORE...CUSTER...FOLSOM...WALL... STURGIS...UNION CENTER...HERMOSA 210 PM MDT THU JUL 2 2009 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH LATE TONIGHT... THE FLASH FLOOD WATCH CONTINUES FOR * PORTIONS OF NORTHWEST SOUTH DAKOTA...SOUTHWEST SOUTH DAKOTA AND WEST CENTRAL SOUTH DAKOTA...INCLUDING THE FOLLOWING AREAS...IN NORTHWEST SOUTH DAKOTA...NORTHERN FOOT HILLS. IN SOUTHWEST SOUTH DAKOTA...CUSTER CO PLAINS...HERMOSA FOOT HILLS AND SOUTHERN BLACK HILLS. IN WEST CENTRAL SOUTH DAKOTA... CENTRAL BLACK HILLS...NORTHERN BLACK HILLS...PENNINGTON CO PLAINS...RAPID CITY...SOUTHERN MEADE CO PLAINS AND STURGIS/PIEDMONT FOOT HILLS. * THROUGH LATE TONIGHT * SHOWERS AND THUNDERSTORMS WILL CONTINUE TO DEVELOP ACROSS THE AREA THIS AFTERNOON AND EVENING. HEAVY RAINFALL IS LIKELY WITH SOME OF THE STORMS AS THEY MOVE SLOWLY ACROSS THE AREA. THE HEAVY RAINFALL COULD CAUSE FLASH FLOODING AND LEAD TO RAPID RISES ON CREEKS AND STREAMS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS ARE FAVORABLE FOR HEAVY RAIN OVER THE WATCH AREA...WHICH MAY CAUSE FLASH FLOODING ALONG STREAMS...CREEKS...CANYONS...AND DRAWS. IF YOU ARE IN THE WATCH AREA...MONITOR NOAA WEATHER RADIO AND LOCAL MEDIA FOR UPDATED FORECASTS. BE READY TO QUICKLY MOVE TO HIGHER GROUND...IF HEAVY RAIN OCCURS...RISING WATER LEVELS ARE OBSERVED...OR A WARNING IS ISSUED.

| Tmax Weather Center Spearfish, SD 57783 | |||
|---|---|---|---|
| LAST READING AT TIME: 20:17 DATE: 02 July 2009 | |||
| Current Weather | clear_ | Current Temperature | 61.2°F (16.2°C), Apparent temp 63.6°F |
| Maximum Temperature (since midnight) | 78.1°F at: 15:41 | Minimum Temperature (since midnight) | 59.9°F at: 03:38 |
| Average windspeed (ten minute) | 0.2 mph | Wind Direction (ten minute) | ESE (112°) |
| Windchill Temperature | 61.2°F | Maximum Gust (last hour) | 4.0 mph at: 19:56 |
| Maximum Gust (since midnight) | 11.8 mph at: 16:57 | Maximum 1 minute average (since midnight) | 7.6 mph at: 16:58 |
| Rainfall (last hour) | 0.000 in. (0.0 mm) | Rainfall (since midnight) | 0.079 in. (2.0 mm) at 18:41 |
| Rainfall This month | 0.08 in. (2.0 mm) | Rainfall To date this year | 8.583 in. (218.0 mm) |
| Maximum rain per minute (last hour) | 0.000 in/min | Maximum rain per hour (last 6 hours) | 0.079 in/hour |
| Yesterdays rainfall | 0.000 in | DewPoint | 59.1°F (Wet Bulb :60.0°F ) |
| Humidity | 93 %, Humidex 68.4°F | Barometer corrected to msl | 30.129 in. (1020.3 hPa) (QNH 0.000 in.) |
| Pressure change | 0.00 in. (last hour) | Trend (last hour) | STEADY |
| Pressure change (last 12 hours) | +0.00 in | Pressure change (last 6 hours) | +0.03 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 27Dec2002













CURRENT CONDITIONS AROUND SOUTH DAKOTA CLICK HERE
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Tmax Weather Center has no control over maintenance, downtime, personnel or complaints, so I can do nothing if the system goes down for any length of time.
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Tmax Weather Center has no control over maintenance, downtime, personnel or complaints, so I can do nothing if the system goes down for any length of time.
300 Mile Radar Provided Courtesy of Weather Underground(Ground Clutter Removed On All Radar Images)
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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)
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The data is logged at 1 second intervals. 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
Earthquake Image Map Provided By the USGS (United States Geological Survey)
Current Geological Activity Data from station RSSD (Black Hills, South Dakota, USA)
Current Time/Date: (This is local to where you are)
Subtract 6 Hrs to get Local Standard Time, and 7 hrs to get Daylight Savings time Corrections

If you would like to see if there is a seismic station near you goto the following address and search for one close to you then click its seismorgram.
USGS Live Seismic Server Data Server
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.World Wide Earthquake Information
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
United States/Canada Pandemic Outlook
World Wide Pandemic Alert Level is Currently: 6
World Wide Pandemic Data can be located at this World Look Address at anytime.
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 once. 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. With recent outbreaks of disease, a pandemic map has also been added for your convenience. Simply click the markers on the map to learn about that incident.The World Health Organisation has a numbered alert level scale, by which it measures the spread of diseases such as swine flu.
Level 1: No animal influenza viruses circulating among animals have been reported to cause infection in animals.
Level 2: An animal influenza virus circulating in domesticated or wild animals is known to have caused infection in humans and is therefore considered a specific potential pandemic threat.
Level 3: An animal or human-animal influenza virus has caused sporadic cases or small clusters of disease in people, but has not resulted in human-to-human transmission sufficient to sustain community-level outbreaks.
During the first three Levels, the World Health Organization “WHO” advises countries to "prepare the health system to scale up".
Level 4: Human-to-human transmission of an animal or human-animal influenza virus able to sustain community-level outbreaks has been verified. Countries are advised to "activate contingency plans".
Level 5: The same identified virus has caused sustained community-level outbreaks in two or more countries in one WHO region. A pandemic is officially under way.
Level 6: In addition to the criteria defined in Level 5, the same virus has caused sustained community level outbreaks in at least one other country in another WHO region.
During Levels five and six, countries are advised to "implement contingency plans for health systems at all levels".
DO NOT PANIC:
This information is being brought to you as a courtesy, this does not mean there is necessarily an emergency, this does not mean your sick, or will become sick, and this does not mean the illness will even be present in your area. The above levels are for informational purposes only. If you feel sick, it’s always best to seek your doctor’s advice, if you are sick stay home, if your child is sick keep them home from school. Please pay attention to local news sources and other medial outlets for more information.Direct Station Information
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 during storms, severe weather, please login, look at what you want then log out, it would be greatly appreciated due to the immediate user level load factor. 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.****Server Information****
Computer Model: eRacks/EFFECTS 2U Rackmount Server® MainframeNOTE: 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, there isn’t 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 got to 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.Mission Statement :
"To provide 24 hour meteorological, oceanographic, geological, and space environmental information, products, and services that are relevant to the City, State and Federal Agencies indicated throughout this website, to assist their operations and any other operation as may be directed by Local, State, or Federal agencies. We strive to be an accurate resource for South Dakota Climate & Weather, providing data to Private, Agriculture, Industry, Education, and the General Public as it relates to our local Community and the State. As soon as we receive new information, we pass it along to you so that you are always informed of what's going on in the world of weather, 24 hours a day, 365 days a year. This site contains detailed weather forecasts provided by our staff and other meteorological source. In addition, we have links to many weather products from various weather forecasting agencies."****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****Oregon Scientific WMR-968 Weather Station Fix****
I have decided to put up the fixes for the weather stations I use, at Oregon Scientific WMR-968 Please read carefully if implementing any of these fixes.Barometric Pressure
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.DISCLAIMER:
Never use information provided on this or any other web site for the protection of life or property. When severe storms are occurring in, or threaten your location, tune to your local NOAA NWS weather station or a local radio or TV broadcaster in your area for immediate weather information. 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.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 :NOAA Live Weather Radio WXL-23 NOAA/NWS Rapid City/Lead, South Dakota & The Tmax Weather Center Opertions Center KSDSPEAR1 Spearfish, South Dakota
NOAA Live Weather Radio WXL-23 NOAA/NWS Rapid City/Lead, South Dakota is provided by the National Weather Service in Rapid City, South Dakota, and is only re-broadcast by The Tmax Weather Center Station. Tmax Weather Center has no control over maintenance, downtime, personnel or complaints towards NOAA or NWS, if you have a complaint to file please follow this address related to the weather radio. NWR Transmitter Problems and file your complaint there. The automated contact number is just that automated. If you contact Tmax Weather Center we will do our best to forward those emails but no guarantees.
If you have general complaints, or would like to contact them goto NOAA/NWS Contact
If you would like to write NOAA/NWS and you can even write them for non-complaints or just to ask a question.
Local NOAA/NWS Offices
NOAA's National Weather Service
Rapid City, SD Weather Forecast Office
300 East Signal Drive
Rapid City, SD 57701-3800
Forecast Line 605-341-7531
NOAA's National Weather Service
Aberdeen, SD Weather Forecast Office
824 Brown County 14 South
Aberdeen, SD 57401-9311
605-225-0519
NOAA's National Weather Service
Sioux Falls, SD Weather Forecast Office
26 Weather Lane
Sioux Falls, SD 57104-0198
605-330-4247
National NOAA/NWS Offices
US Dept of Commerce
Only You Can Prevent Forest Fires
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
The Fire Weather Index as Generated by The Tmax Weather Center is in the live applet near the top of this page! This Station produces this image from the raw data it collects it is not representative of the images above provided by the Northern Great Plains Interagency Dispatch Center.
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)//Skywarn//
Monthly Reports
United States Amber Alert System:
National Homeland Security Knowledgebase
Other Links
Federal Organizations and Resources
Department of Homeland Security // Ready.gov// FBI Tips and Leads//Click here for a daily update of the averages/extremes to date for the month
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