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  • Convective Initiation « CIMSS Satellite Blog
    afternoon hours New convection was then seen to develop in Oklahoma and Texas along the old outflow boundary after about 20 UTC In addition new thunderstorms that had developed in the Texas Panhandle around 19 UTC appeared to intensify once they moved eastward and encountered the aforementioned outflow boundary that was left behind from the earlier storms According to the SPC Storm Reports the large thunderstorms in the Texas Panhandle produced hail up to 4 00 inches in diameter with surface wind gusts up to 75 mph Posted in Convective Initiation GOES 13 Severe convection No Comments Forecasting Isolated Convection July 17th 2010 How can satellite data be used to focus one s attention to the relevant portion of an airmass when isolated convection is developing That was a salient question late in the day on 16 July when a few convective cells developed over the upper midwest Visible imagery above shows the development of a strong cell that produced 1 75 inch hail southwest of Rochester in Waltham MN Several satellite products from earlier in the day suggested convection could be sustained in this region For example the CIMSS Nearcasting product which product uses a Lagrangian transport model of upper and lower level moisture observations from the GOES Sounder to make short term predictions of convective instability that is the change in equivalent potential temperature with height shows a ribbon of lower stability air arcing from Nebraska to southern Minnesota to central Wisconsin Consider the forecast for 2000 UTC on 16 July made from observations at 1400 UTC 1500 UTC 1600 UTC and 1700 UTC A loop of the four forecasts valid at 2000 UTC is here The forecast for lower level around 800 mb equivalent potential temperature to be 7 12 K warmer than the upper level around 500 mb equivalent potential temperature is very consistent from run to run Sounder Derived Product Imagery also shows destabilization ongoing in the region highlighted by the Nearcasting technique The Lifted Index above derived from the Sounder Retrievals shows a ribbon of progressively more unstable air over the course of the day Once the region of interest is identified UW Convective Initiation can be used to identify the specific cumulus cell that will grow For example consider the visible image at 2000 UTC 2015 UTC 2032 UTC and 2045 UTC A convective cell develops over southern Minnesota out of a line of towering cumulus By 2045 UTC lightning is being produced The UW Convective Initiation product which uses both cloud top cooling and cloud phase changes both derived from GOES 13 imagery to infer strong convective growth that leads to clouds with supercooled water and then ice shows convective initiation likely over south central Minnesota at 2032 UTC and ongoing at 2045 UTC A more complete visible loop that includes lightning plots is here The complete visible loop with convective initiation values overlain is below Strong convective cells from Nebraska to Wisconsin are recognized by the UWCI algorithm Note that convective

    Original URL path: http://cimss.ssec.wisc.edu/goes/blog/archives/category/convective-initiation/page/2 (2012-11-14)
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  • Wildfires in North Dakota, Minnesota, and Manitoba « CIMSS Satellite Blog
    3 7 µm shortwave IR images During the subsequent overnight hours the fire located north of Upper Red Lake and Lower Red Lake in northwestern Minnesota continued to grow very rapidly and produced an unusually long smoke plume that was quite evident on Suomi NPP VIIRS 0 7 µm Day Night Band DNB images at 07 33 UTC 2 33 AM local time and 09 14 UTC 4 14 AM local time as it drifted northeastward over southern Ontario below Illumination from the nearly full waning gibbous phase 87 full Harvest Moon allowed the smoke plume and surrounding cloud features to be easily seen at night Suomi NPP VIIRS 0 7 µm Day Night Band images Comparisons of the Suomi NPPP VIIRS 0 7 µm Day Night Band images with their corresponding 3 74 µm shortwave IR images at those two times below showed the large fire hot spots yellow to red to black color enhancement on the shortwave IR imagery along with the brightly glowing signature of the fire on the DNB imagery Suomi NPP VIIRS 0 7 µm Day Night Band and 3 74 µm shortwave IR images Suomi NPP VIIRS 0 7 µm Day Night Band and 3 74 µm shortwave IR images Since smoke is essentially transparent to longwave InfraRed IR thermal radiation comparisons of the Suomi NPP VIIRS 0 7 µm Day Night Band images with their corresponding 11 45 µm IR images below showed that there was no discernable signature of the smoke plume on the IR imagery Suomi NPP VIIRS 0 7 µm Day Night Band and 11 45 µm IR images Suomi NPP VIIRS 0 7 µm Day Night Band and 11 45 µm IR images Posted in Fire detection GOES 14 MODIS Suomi NPP VIIRS No Comments Leave a Reply Click here to cancel reply Name required Mail will not be published required Website Webmaster Follow us on Search for Pages About this site CIMSS Satellite Proving Ground Contact us Mobile users POES AVHRR in AWIPS SatePedia Suomi NPP JPSS Proving Ground VISIT SHyMet Training Topics November 2012 M T W T F S S Oct 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Categories Air quality Antarctic Arctic AVHRR Aviation AWIPS II Calibration Anomalies Cloud Top Cooling Convective Initiation Fire detection Fog detection General interpretation GOES sounder GOES 10 GOES 11 GOES 12 GOES 13 GOES 14 GOES 15 GOES R Google Earth Heavy rain flooding Historical Hydrology Lightning Marine weather McIDAS V Meteosat MODIS MTSAT Other Satellites POES Red Green Blue RGB images Satellite winds Severe convection Suomi NPP Synthetic satellite imagery Training Tropical cyclones VIIRS Volcanic activity Web Map Server What the heck is this Winter weather Other blogs of interest AccuWeather Blogs CIMSS GOES Gallery CIMSS TPARC Support CIRA GOES R Proving Ground Blog EUMETSAT Image Gallery Geographic Information Network of Alaska GOES R and

    Original URL path: http://cimss.ssec.wisc.edu/goes/blog/archives/11496 (2012-11-14)
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  • Pyrocumulus clouds associated with wildfires in Wyoming « CIMSS Satellite Blog
    temperature roughly corresponded to an altitude just over 31 000 feet or 9 6 km below Riverton Wyoming rawinsonde data at 12 UTC Posted in Fire detection GOES 13 GOES 15 Suomi NPP VIIRS No Comments Leave a Reply Click here to cancel reply Name required Mail will not be published required Website Webmaster Follow us on Search for Pages About this site CIMSS Satellite Proving Ground Contact us Mobile users POES AVHRR in AWIPS SatePedia Suomi NPP JPSS Proving Ground VISIT SHyMet Training Topics November 2012 M T W T F S S Oct 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Categories Air quality Antarctic Arctic AVHRR Aviation AWIPS II Calibration Anomalies Cloud Top Cooling Convective Initiation Fire detection Fog detection General interpretation GOES sounder GOES 10 GOES 11 GOES 12 GOES 13 GOES 14 GOES 15 GOES R Google Earth Heavy rain flooding Historical Hydrology Lightning Marine weather McIDAS V Meteosat MODIS MTSAT Other Satellites POES Red Green Blue RGB images Satellite winds Severe convection Suomi NPP Synthetic satellite imagery Training Tropical cyclones VIIRS Volcanic activity Web Map Server What the heck is this Winter weather Other blogs of interest AccuWeather Blogs CIMSS GOES Gallery CIMSS TPARC Support CIRA GOES R Proving Ground Blog EUMETSAT Image Gallery Geographic Information Network of Alaska GOES R and JPSS National Centers Perspective GOES R Fog Product Examples GOES R Hazardous Weather Testbed METSUL blog NOAA NESDIS Operational Significant Event Imagery NSSTC Collaborative Weather Blog PREDICT Field Experiment Blog The GOES R Proving Ground at the Aviation Weather Testbed The Wide World of SPoRT UMBC U S Air Quality The Smog Blog US Severe Weather Blog VIIRS Imagery and

    Original URL path: http://cimss.ssec.wisc.edu/goes/blog/archives/11346 (2012-11-14)
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  • Fire detection « CIMSS Satellite Blog
    night time hours a comparison of AWIPS images of Suomi NPP VIIRS 3 74 µm shortwave IR and 0 8 µm Day Night Band DNB data above demonstrated how the DNB imagery can detect the glow of the actively burning fires co located with the black to yellow to red color enhanced hot spots on the shortwave IR image in addition to the city lights across the region Stray light contamination was affecting the far northeastern portion of the DNB image Posted in Air quality Fire detection GOES 13 Google Earth MODIS Suomi NPP VIIRS No Comments GOES 14 SRSOR Fires in northern California August 21st 2012 GOES 14 3 9 µm shortwave IR left and 0 63 µm visible right images click image to play animation McIDAS images of GOES 14 1 minute interval Super Rapid Scan Operations for GOES R SRSOR 4 km resolution 3 9 µm shortwave IR channel data and 1 km resolution 0 63 µm visible channel data above click image to play animation showed a number of significant wildfires burning across parts of northern California on 21 August 2012 The largest and most intense fires exhibited pronounced hot spots black to yellow to red color enhancement on the shortwave IR imagery with optically thick smoke plumes on the corresponding visible imagery The GOES 14 satellite has been brought out of on orbit storage to be tested in SRSOR mode through the end of October 2012 allowing it to provide images at 1 minute intervals for an extended period of time over special regions of interest similar to the future GOES R satellite which will be capable of producing imagery at 30 second intervals over special sectors of interest During the previous night time hours a comparison of AWIPS images of 1 km resolution MODIS 3 7 µm data with the corresponding 4 km resolution GOES 15 3 9 µm shortwave IR data below demonstrated the value of improved spatial resolution for identifying the location of smaller fires as well as more accurately assessing the location and shape of the more intense portions of larger actively burning fires MODIS 3 7 µm vs GOES 15 3 9 µm shortwave IR images Posted in Fire detection GOES 14 MODIS No Comments Older Entries Newer Entries Webmaster Follow us on Search for Pages About this site CIMSS Satellite Proving Ground Contact us Mobile users POES AVHRR in AWIPS SatePedia Suomi NPP JPSS Proving Ground VISIT SHyMet Training Topics November 2012 M T W T F S S Oct 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Categories Air quality Antarctic Arctic AVHRR Aviation AWIPS II Calibration Anomalies Cloud Top Cooling Convective Initiation Fire detection Fog detection General interpretation GOES sounder GOES 10 GOES 11 GOES 12 GOES 13 GOES 14 GOES 15 GOES R Google Earth Heavy rain flooding Historical Hydrology Lightning Marine weather McIDAS

    Original URL path: http://cimss.ssec.wisc.edu/goes/blog/archives/category/fire-detection/page/2 (2012-11-14)
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  • Ship tracks in the East Pacific Ocean, and valley fog in British Columbia « CIMSS Satellite Blog
    here to cancel reply Name required Mail will not be published required Website Webmaster Follow us on Search for Pages About this site CIMSS Satellite Proving Ground Contact us Mobile users POES AVHRR in AWIPS SatePedia Suomi NPP JPSS Proving Ground VISIT SHyMet Training Topics November 2012 M T W T F S S Oct 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Categories Air quality Antarctic Arctic AVHRR Aviation AWIPS II Calibration Anomalies Cloud Top Cooling Convective Initiation Fire detection Fog detection General interpretation GOES sounder GOES 10 GOES 11 GOES 12 GOES 13 GOES 14 GOES 15 GOES R Google Earth Heavy rain flooding Historical Hydrology Lightning Marine weather McIDAS V Meteosat MODIS MTSAT Other Satellites POES Red Green Blue RGB images Satellite winds Severe convection Suomi NPP Synthetic satellite imagery Training Tropical cyclones VIIRS Volcanic activity Web Map Server What the heck is this Winter weather Other blogs of interest AccuWeather Blogs CIMSS GOES Gallery CIMSS TPARC Support CIRA GOES R Proving Ground Blog EUMETSAT Image Gallery Geographic Information Network of Alaska GOES R and JPSS National Centers Perspective GOES R Fog Product Examples GOES R Hazardous Weather Testbed METSUL blog NOAA NESDIS Operational Significant Event Imagery NSSTC Collaborative Weather Blog PREDICT Field Experiment Blog The GOES R Proving Ground at the Aviation Weather Testbed The Wide World of SPoRT UMBC U S Air Quality The Smog Blog US Severe Weather Blog VIIRS Imagery and Visualization Team Blog VISIT Meteorological Interpretation Weather Channel Blogs Weather Underground Blogs WGN Weather Center Blog Satellite imagery sources CIMSS GOES Derived Product Imagery CIMSS Tropical Cyclones Environmental Remote Sensing Center SSEC GINA University of Alaska Fairbanks NWS WFO scale

    Original URL path: http://cimss.ssec.wisc.edu/goes/blog/archives/11538 (2012-11-14)
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  • Fog detection « CIMSS Satellite Blog
    that these products are available in WFOs From the 0958 UTC AFD in State College PA NEAR TERM UNTIL 6 PM THIS EVENING EARLY AM MODIS 11 3 7UM IMAGERY SHOWING DENDRITIC PATTERN OF FOG IN THE VALLEYS THE RESULT OF A COOL CALM MORNING AND RELATIVELY WARM RIVER STREAM WATERS LATEST 3KM HRRR SFC RH FIELDS SUGGEST THE MOST PERSISTENT FOG WILL BE UNDER SFC RIDGE AXIS ACROSS THE SUSQ VALLEY WHERE PATCHES COULD LINGER UNTIL 14Z 15Z Posted in Fog detection General interpretation GOES 13 GOES R MODIS Suomi NPP VIIRS No Comments River valley fog features on VIIRS Day Night Band imagery September 4th 2012 Suomi NPP VIIRS 0 8 µm Day Night Band image with surface observations An AWIPS image of Suomi NPP VIIRS 0 8 µm Day Night Band data with overlays of surface observations above revealed the dendritic fingers signature of river valley fog across parts of southwestern Wisconsin and the adjacent Mississippi River Valley region at 08 17 UTC 3 17 AM local time on 04 September 2012 The moon was in the waning gibbous phase with 83 of the Moon s visible disk illuminated providing ample illumination of the night time river valley fog features in the middle portion of the image Additional cloud features could also be seen in other parts of the satellite scene as well as the brighter signatures of city light across the region Posted in Fog detection Suomi NPP VIIRS No Comments Wildfires in the northwestern US August 29th 2012 GOES 13 0 63 µm visible channel 3 9 µm shortwave IR channel data click image to play animation McIDAS images of GOES 13 0 63 µm visible channel data during the day and 3 9 µm shortwave IR data at night above click image to play animation revealed a number of very large and dense smoke plumes from wildfires that were burning in parts of the northwestern US primarily in Idaho on 28 August 29 August 2012 The GOES 13 satellite had been placed into Rapid Scan Operations RSO mode providing images as frequently as very 5 10 minutes During the following overnight hours AWIPS images of Suomi NPP VIIRS 0 8 µm Day Night Band DNB 3 74 µm shortwave IR and 11 45 µm IR data below demonstrated the value of the DNB providing a visible channel at night under ideal conditions of illumination by ample moonlight While the 11 45 µm IR image verified that there were some patches of meteorological cloud in the region the majority of the bright features seen on the DNB image were thick airborne smoke Suomi NPP VIIRS 0 8 µm Day night Band 3 74 µm shortwave IR and 11 45 µm IR window images An even closer view using McIDAS V images of VIIRS 0 8 µm DNB and 4 05 µm shortwave IR data below images courtesy of William Straka CIMSS highlighted the Mustang Fire Complex smoke plume and fire hot spots black to yellow

    Original URL path: http://cimss.ssec.wisc.edu/goes/blog/archives/category/fog-detection/page/2 (2012-11-14)
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  • General interpretation « CIMSS Satellite Blog
    occurs This link from the Washington Post Capital Weather Gang blog gives additional information See also this memo from NOAA SSD Real time sounder imagery is available here Posted in Calibration Anomalies General interpretation GOES 13 GOES 14 No Comments Autumn tree colors seen in MODIS true color imagery September 30th 2012 MODIS true color Red Green Blue RGB image A spectacular display of autumn tree colors can be seen on 30 September 2012 across parts of northeastern Minnesota northern Wisconsin and the Upper Peninsula of Michigan in this 250 meter resolution Aqua MODIS true color Red Green Blue RGB image from the SSEC MODIS Today site above 02 October Update Two days later another view of the autumn tree foliage colors was provided by a Terra MODIS true color RGB image from the SSEC MODIS Direct Broadcast site below MODIS true color Red Green Blue RGB image Posted in General interpretation MODIS Red Green Blue RGB images 1 Comment VIIRS Day Night Band nocturnal detection of wildfire smoke aloft September 26th 2012 Suomi NPP VIIRS 0 7 µm Day Night Band 11 45 µm IR and IR difference fog stratus product images A comparison of AWIPS images of Suomi NPP VIIRS 0 7 µm Day Night Band 11 45 µm IR and IR difference fog stratus product data above revealed that the Day Night Band DNB can be used for nocturnal detection of dense layers of wildfire smoke aloft in this case over parts of Montana Wyoming North Dakota South Dakota and Nebraska The brighter DNB signal of the elevated smoke layer was not correlated with any features seen on either the IR image or the fog stratus product image at 08 04 UTC 2 04 AM local time on 26 September 2012 The MODIS aerosol optical depth AOD product below showed that high ADO values were found over that region during the afternoon hours 20 UTC on 25 September Forward trajectories from the IDEA I site indicated that the majority of this smoke would be drifting slowly eastward MODIS aerosol optical depth AOD product The hazy signal of this veil of smoke aloft could also be seen on GOES 14 0 63 µm visible channel images late in the day on 25 September and again early in the day on 26 September below when the sun angle was low to help highlight the presence of the smoke GOES 14 0 63 µm visible channel images Posted in Air quality General interpretation GOES 14 MODIS Suomi NPP VIIRS No Comments Older Entries Newer Entries Webmaster Follow us on Search for Pages About this site CIMSS Satellite Proving Ground Contact us Mobile users POES AVHRR in AWIPS SatePedia Suomi NPP JPSS Proving Ground VISIT SHyMet Training Topics November 2012 M T W T F S S Oct 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Categories Air quality

    Original URL path: http://cimss.ssec.wisc.edu/goes/blog/archives/category/general-interpretation/page/2 (2012-11-14)
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  • Heavy rainfall and flooding in Las Vegas, Nevada « CIMSS Satellite Blog
    enhancement Blended Total Precipitable Water Percent of Normal product With afternoon heating GOES Sounder Convective Available Potential Energy CAPE values below exceeded 2600 J kg 1 darker yellow color enhancement in the pre convective environment GOES Sounder Convective Available Potential Energy CAPE product Posted in AVHRR GOES sounder GOES 13 Heavy rain flooding POES No Comments Leave a Reply Click here to cancel reply Name required Mail will not be published required Website Webmaster Follow us on Search for Pages About this site CIMSS Satellite Proving Ground Contact us Mobile users POES AVHRR in AWIPS SatePedia Suomi NPP JPSS Proving Ground VISIT SHyMet Training Topics November 2012 M T W T F S S Oct 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Categories Air quality Antarctic Arctic AVHRR Aviation AWIPS II Calibration Anomalies Cloud Top Cooling Convective Initiation Fire detection Fog detection General interpretation GOES sounder GOES 10 GOES 11 GOES 12 GOES 13 GOES 14 GOES 15 GOES R Google Earth Heavy rain flooding Historical Hydrology Lightning Marine weather McIDAS V Meteosat MODIS MTSAT Other Satellites POES Red Green Blue RGB images Satellite winds Severe convection Suomi NPP Synthetic satellite imagery Training Tropical cyclones VIIRS Volcanic activity Web Map Server What the heck is this Winter weather Other blogs of interest AccuWeather Blogs CIMSS GOES Gallery CIMSS TPARC Support CIRA GOES R Proving Ground Blog EUMETSAT Image Gallery Geographic Information Network of Alaska GOES R and JPSS National Centers Perspective GOES R Fog Product Examples GOES R Hazardous Weather Testbed METSUL blog NOAA NESDIS Operational Significant Event Imagery NSSTC Collaborative Weather Blog PREDICT Field Experiment Blog The GOES R Proving Ground at the Aviation Weather Testbed

    Original URL path: http://cimss.ssec.wisc.edu/goes/blog/archives/11311 (2012-11-14)
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