What's New

Date	Change	Tags
2025-04-23	FourCastNetV2 (ECMWF-EPS, GEFS) and GraphCast (ECMWF-EPS) 16-30 day outlook data have been added for degree days and city max/min forecasts. Examples on SV are here: https://www.stormvistawxmodels.com/sv/weekly-dd-changes/fcnv2-ecmwf-eps/gw_hdd/2025042300z/ https://www.stormvistawxmodels.com/sv/weekly-dd-changes/compare-fcnv2-ecmwf-eps/gw_hdd/2025042300z API examples include: https://www.stormvistawxmodels.com/api#/paths/model-data-wkmodel---date---cycle-z-wdd-national.csv/get https://www.stormvistawxmodels.com/api#/paths/model-data-longmodel---date---cycle-z-city-extraction-max-min_-region-.csv/get
2025-04-22	Sun up hours file has been added for solar generation to the SV API: https://www.stormvistawxmodels.com/api#/paths/model-data-meta-region-_sunup_hours.csv/get
2025-04-22	Ontario solar generation has been added to Stormvista: https://www.stormvistawxmodels.com/sv/solargen/2025042200z/ieso Also available in API: https://www.stormvistawxmodels.com/api#/paths/model-data-model---date---cycle-z-renewables--region--solargen-forecast.csv/get
2025-04-15	Extended range (16-30 day) AI daily composites added for FourCastNetV2 and GraphCast. See example here: https://www.stormvistawxmodels.com/sv/weekly-composites-daily/ai-fourcastnetv2-ecmwf-eps (Find under Features -> Composite menu)
2025-03-28	GraphCast extended range subseasonal teleconnections added: https://www.stormvistawxmodels.com/sv/teleconnections-weekly
2025-03-18	0z Cycle GraphCast-EuroENS subseasonal forecast maps are now added to StormVista. See examples here: https://www.stormvistawxmodels.com/sv/weekly-composites/ai-graphcast-gdas-ecmwf-eps/na
2025-03-11	European weekly WDD verifications added to SV API: North America: https://www.stormvistawxmodels.com/api#/paths/model-data-model---date---cycle-z-wdd-bias_-avg-day.csv/get EIA/ISO: https://www.stormvistawxmodels.com/api#/paths/model-data-model---date---cycle-z-wdd--area--bias_-avg-day.csv/get International: https://www.stormvistawxmodels.com/api#/paths/model-data-model---date---cycle-z-wdd--type-_bias_-avg-day_reg-reg-.csv/get
2025-03-07	AIFS renewables (Solar/Wind) added to SV API. https://www.stormvistawxmodels.com/api
2025-03-06	European weekly WDD verifications now available on SV as part of the medium range metrics here: https://www.stormvistawxmodels.com/sv/model-verification/wdd-bias And on its own subseasonal page here: https://www.stormvistawxmodels.com/sv/model-verification/wdd-weekly-bias
2025-03-05	SV WDD verification page now includes aggregated periods (1-15, 1-5, 6-10, and 11-15 day). Scroll below line charts to see them. An example is seen here: https://www.stormvistawxmodels.com/sv/model-verification/wdd-bias/gw_hdd/mae/all/45
2025-03-04	SV's city forecast pages now include a line chart below the table that shows the max/min forecasts for all the models with clickable legend. The new history button now allows you to look at 30, 60, and 90-day history for the station, including climatology and records. See example here: https://www.stormvistawxmodels.com/sv/city-plots-max-min
2025-03-04	New Variables Added to AIFS Model on SV: 100-meter Winds: https://www.stormvistawxmodels.com/sv/model-maps/model-aifs/cycle-06/region-na/image-174-100-m-winds Wind Power Production: https://www.stormvistawxmodels.com/sv/model-maps/model-aifs/cycle-06/region-na/image-146-wind-power-production Cloud Cover: https://www.stormvistawxmodels.com/sv/model-maps/model-aifs/cycle-06/region-na/image-17-cloud-cover-total Reminder: You can change the default dark/white cloud cover on the SV Display Settings (upper left side) here: https://www.stormvistawxmodels.com/sv/settings (don't forget to hit Save at bottom if you make a change)
2025-03-03	Ensemble freeze-off pages on SV now include options to set your own temperature threshold (upper right of page) and number of hours below that threshold (bottom of page): https://www.stormvistawxmodels.com/sv/freeze-ensemble-stats
2025-03-03	SV API now has a Model Status endpoint available for tracking model cycles. https://www.stormvistawxmodels.com/api#/paths/model-data-meta-status.csv/get
2025-02-25	The ECMWF just issued first upgraded AIFS model version for its 6z cycle. https://www.stormvistawxmodels.com/sv/model/aifs We did not receive most recent runs in past 24 hours, so the change maps will be broken initially, unfortunately. Also, they have not specified a distribution schedule, but our understanding is that it should at least be 2-3 hours faster now that is operational and not experimental. You can read more about the upgrade here: https://confluence.ecmwf.int/display/FCST/Implementation+of+AIFS+Single+v1 New variables have been added for renewables (wind/solar), and we plan to add them to SV in the near future.
2025-02-24	New Model Cluster-Analogs are available on SV to take 11-15 day and day 15 clusters, find analogs for each, and then progress them into 16-20 and 16-30 day periods. See examples here: https://www.stormvistawxmodels.com/sv/model-cluster-analogs/ecmwf-eps/00z/usa/20250224/hanom?unit1=F&unit2=in&base-period=360&trel=No
2025-02-24	European Weekly Change HDD Comparison options now available to compare 24-hour, 48-hour, 72-hour, and 96-hour changes. See example here: https://www.stormvistawxmodels.com/sv/weekly-dd-changes/ecmwf-weekly/gw_hdd/2025022300z/p24
2025-02-14	PJM, ERCOT, CAISO, and MISO solar subregions added to SV website and API Examples here: https://www.stormvistawxmodels.com/sv/solargen/2025021406z/ercotgcentereast https://www.stormvistawxmodels.com/api#/paths/model-data-model---date---cycle-z-renewables--region--solargen-forecast.csv/get
2025-02-04	6z and 18z FourCastNetV2 ensemble cycles have been added for both initializations (GEFS, ECMWF).
2025-01-28	Starting Tuesday, February 4th, the PJM wind forecasts will be updated by removing PJM East and replacing it with South and Mid-Atlantic subregions instead. Sample API files will be sent to customers who pull these files.

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