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ALT A bar chart showing the chance of El Niño (red bars), ENSO-Neutral (grey bars), and La Niña (blue bars) provided for 9 upcoming, overlapping 3-month seasons (each letter represents a month, for example, F = February). The color shading within the bars indicates the chances of different categories of El Niño or La Niña strength (weak, moderate, strong, and very strong). Alternatively, the table at the internet address below presents the percent chances of each strength category in numerical form. https://cpc.ncep.noaa.gov/products/analysis_monitoring/enso/roni/strengths/
ALT The Sierra Nevada mountain ranges will see some heavy snow Friday into Saturday with 6-12 inches forecast above 6000 ft. and as high as 2 feet in the highest peaks. Winter Storm Severity Index is showing Major impacts as heavy, wet snow will make travel difficult in the passes.
ALT A weather graphic from the National Weather Service Caribou, ME, forecasts a rain and snow mix for Downeast Maine from tonight into Friday morning. Up to a half inch of snow is possible in Downeast areas, while northern Maine will remain dry. Two maps show forecast high temperatures across Northern and Eastern Maine for today and Friday. High temperatures today will range from the upper 30s to around 40 north...to the mid 40s Downeast. Slightly cooler temperatures will occur Friday ranging from the mid to upper 30s north...to around 40 to the lower 40s Downeast.
ALT Ocean surface temperature time series from the Farallon Islands, showing current water temperatures are exceeding 66F and are over 10F warmer than average--shattering all records for so late in the calendar season and also matching the warmest temperatures ever observed at *any* time of year.
ALT 13th wave
ALT Confidence is high that a low pressure system will develop across the Ohio Valley Wednesday and then shift off the Mid-Atlantic coast while strengthening Friday. Trends in the model guidance suggest a slightly faster system with less overall precipitation. The threat for at least some impactful high elevation snow remains, but the risk has decreased in lower elevations. The exact placement of the storm — small shifts in the track will greatly change impacts. The amount of snow that may occur, and what impacts will result from this snow. The impacts to coastal regions due to gusty winds and onshore flow. Confidence in storm development remains high, but details will continue to adjust. The threat for low elevation snow has decreased, but high elevation snow and coastal impacts are likely. Keep up to date with the latest at weather.gov
ALT Map of the U.S. showing temperature percentiles for October 2026 with warmer areas in gradients of red and cooler areas in gradients of blue.
ALT Map of the U.S. showing precipitation percentiles for October 2026 with wetter areas in gradients of green and drier areas in gradients of brown.
ALT Slide includes images of flooding and a map of observed rainfall (4 to 8+ inches) that occurred on November 3-4, 1927. http://www.weather.gov/media/btv/events/1927Flood.pdf
ALT Monthly climate information for our 6 climate sites.