GOES-16 1-min imagery captured some incredible views of severe storm over the northern High Plains on 6/28/2018, including a large tornado producing storm in southeast Montana crossing into northwest South Dakota (Figure 1).
Figure 2: 28 June 2018 GOES-16 1-min visible satellite imagery. Storm crossing from southeast Montana into Northwest South Dakota produced multiple tornados. Full res
A nearly stationary storm in North Dakota produced severe hail and heavy rainfall, prompting a Flash Flood Warning. Apparent are persistent overshooting tops and above anvil cirrus plumes, indicating strong and long-lived updrafts (Figure 2).
Figure 2: 28 June 2018 GOES-16 1-min visible imagery of severe/heavy rain producing storm in North Dakota. Full res
The Spring fire developed in northern Costilla County in south-central Colorado during the late afternoon of 6/27/2018. The fire quickly grew to over 1,000 acres by evening. GOES-16 captured the initial development of the wildfire hot spot (Figure 1) and associated smoke plume (Figure 2).
By the afternoon of the 28th, the fire had grown to over 4,000 acres with no containment, and destroyed an estimated 30 structures. Given the dry and breezy conditions, NWS Pueblo had issued a Red Flag Warning for much of the region. Although the lower levels were very dry, moisture aloft led to the development of clouds in the area, and pyrocumulus at times over the fire. GOES-16 1-min imagery was available over the region on the 28th, and visible imagery captured the convective bursts (Figure 3).
Figure 3: 28 June 2018 GOES-16 1-min VIS over south-central Colorado. Centered over Spring Fire, located in far northeast Costilla County. Full res
Despite the cloud cover, the hot spot associated with the fire was still apparent much of the day in the 3.9 um channel (Figure 4)
#SpringFire as seen from GOES 16 in the shortwave infrared band which is good at detecting & monitoring hot spots from wild fires. Please head all evacuation orders! This is a dangerous fire fueled by gusty winds and heat! #cowxpic.twitter.com/mzzfhYub4p
The hot spot was also detected by the Suomi-NPP Day Night Band (Fig 5).
Figure 5: 29 June 2018 overnight Suomi-NPP Day Night Band over eastern Colorado. Image credit: William Straka (UW/SSEC/CIMSS). Full res
By the evening of Friday the 29th, the fire had grown to nearly 34,000 acres. While cloud cover remained over the region, the hot spot was still apparent as it expanded. The hot spot remained apparent through the evening (Fig 6).
Figure 6: 30 June 2018 GOES-16 5-min 3.9 um shortwave IR imagery centered over Spring Fire. Full res
The fire grew to over 41,000 acres on June 30th. GOES-16 3.9 um channel imagery indicated two distinct hot spot areas become obvious during the day (Fig 7). The fire remains 0% contained.
Figure 7: 30 June 2018 GOES-16 5-min 3.9 um SWIR over Spring Fire. Full res
The Satellite Training and Operations Resources (STOR) VLAB page has recently been developed to serve as a “one-stop shop” for satellite-related resources for NWS AWIPS users. With GOES-R and JPSS recently coming online, the need to organize such resources was identified, so the page was developed and initially populated by the NWS/STOR team and satellite training community. In the future, NWS SOO’s will likely also be able to submit content.
The front page features recent and relevant news, a satellite training calendar, and a table of contents. The navigation bar and drop-down menus at the top of the VLAB can be used to access content from anywhere within the STOR. Examples of content include brief training material, relevant blog posts and sites, procedures, color tables, a forum for discussion, and more! Some of this material can be accessed directly from AWIPS/D2D via the AIR.
Visit the STOR here: https://vlab.ncep.noaa.gov/web/stor
GOES-16 imagery in AWIPS-II transitioned to Fixed Grid today at 1527. See below for information and examples.
GOES imagery in NWS AWIPS is now be on native geostationary grid (fixed grid)
Up until now, fixed grid data has been remapped to a different projection
Result is oversampling of native fixed grid data
Smaller pixels, appearance of more detail, smoothed data, different reflectance/BT
Result of using Fixed Grid Data
Increase accuracy and clarity of imagery
Reduce latency, bandwidth, disk storage
Decrease AWIPS load time
Daytime Convection RGB Composite
The example below (Figure 1) over eastern Kansas uses 1-min VIS and IR imagery at 1526 UTC (old) and 1527 UTC (new fixed grid) to exemplify the transition. When using the CONUS projection in AWIPS, the pixels now appear diagonal (away from position of the satellite sub point) and larger (with distance away from satellite sub point). Considering the data are no longer smoothed across pixels, the imagery and features within (cu, anvil edges, overshooting tops) appear crisper.
Figure 1: 19 June 2018 GOES-16 VIS and IR transition to Fixed Grid over eastern Kansas. Full res
A longer 1-min animation centered over the time of transition (Figure 2).
Figure 2: 19 June 2018 GOES-16 1-min VIS and IR imagery over eastern Kansas. Transition to fixed grid occurs at 1527 UTC, roughly midway through the animation. Full res
Here is a video from the OPG on the transition: https://www.youtube.com/watch?v=Dg8VacIUl38&feature=youtu.be
GOES-16 visible imagery observations of the Ute Park Fire smoke plume on June 2 yielded some interesting phenomenon (Fig 1). Early on in the loop and before the fire really gets going for the day, the plume is trapped under a stable layer. As the mountain slopes heats up to the west and north of the wildfire, flow under the inversion drives the smoke west/north toward the heated/lower pressure slopes. After the wildfire becomes more active and heats up substantially during the early afternoon, the smoke plume penetrates through the inversion and taps into the westerly flow aloft, accelerating east. Winds at the surface increase from the south, and smoke in the lower levels accelerates north. Toward the end of the loop, gravity wave “ripple” features are diagnosed emanating away from the fire within the smoke layer still trapped under the inversion.
Figure 1: 2 June 2018 GOES-16 5-min 0.64 um visible imagery centered over Ute Park Fire in northern New Mexico. Full res