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The medium range forecast products include surface pressure patterns, circulation centers and fronts, daily maximum and minimum temperatures and anomalies, probability of precipitation in 12-hour increments, total 5-day precipitation accumulation for the next five days, and 500 hPa (mb) height forecasts for days 3–7. In addition, a narrative ...
Downtown L.A. has received just 0.7 of an inch of rain since the water year began Oct. 1; the average for this time of year — a little more than four months into the water year — is 7.68 ...
(MAPS: 7-Day U.S. Rain/Snow Forecast) Tuesday's Forecast. These winter storm streaks aren’t unusual: You may be wondering how weird it is to have four separate winter storms in the span of a week.
Widespread rainfall amounts of 1-2 inches are expected for San Francisco and the Bay Area northward to northwestern Oregon, with over half a foot of rain in portions of Northern California.
A QPF will be created when precipitation amounts reaching a minimum threshold are expected during the forecast's valid period. Valid periods of precipitation forecasts are normally synoptic hours such as 00:00, 06:00, 12:00 and 18:00 GMT. Terrain is considered in QPFs by use of topography or based upon climatological precipitation patterns from ...
Example of a five-day rainfall forecast from the Hydrometeorological Prediction Center. The Quantitative Precipitation Forecast (abbreviated QPF) is the expected amount of liquid precipitation accumulated over a specified time over a specified area. [115]
The average for this time of year — a little more than four months into the water year — is 7.8 inches. The annual average is 14.25 inches. Downtown's driest water year on record ended Sept ...
Tornado outbreak of April 13–16, 2012 – This was day 2 of aforementioned outbreak; it was only the second high risk to be issued on Day 2 (the day before the event; first Day 2 high risk was for April 7, 2006) and the first/only to date ever issued on the initial (0600Z) Day 2 outlook. [278]