Public Information Statement
Issued by NWS Medford, OR

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000
NOUS46 KMFR 011326
PNSMFR
ORZ026-011830-

Public Information Statement
National Weather Service Medford OR
625 AM PDT Wed May 1 2019

...MEDFORD OREGON WEATHER REVIEW: April 2019...

April started out wet and near to above normal for temperatures.
Periods of moderate to heavy rain occurred in the Medford area as
several frontal systems moved into the area from the west to
northwest during the first 9 days of April, then additional light to
moderate rain fell during the middle of the month. Also, with a
disturbance on April 4th, a thunderstorm developed in showers and
brought isolated lightning to the Medford area.

The most notable of the wet frontal systems in April was an
atmospheric river that moved into the area April 6 through April 9.
This front had a stream of moist tropical air associated with it.
Ahead of the front, southeast winds at the Medford airport reached
26 mph with gusts of 34 mph on April 6th. As the front moved into
the area, it brought heavy rain to the Medford area. Two daily
rainfall records were broken at Medford on the 7th and the 8th with
0.55 and 0.82 inches of daily rainfall reported, respectively.
Significant river rises occurred on area rivers. The Rogue River
reached bankfull at Eagle Point and reached minor flood stage at
Agness on April 8th and 9th. During this event, heavy rain fell in
southwest Oregon including 5 to 8 inches of rain at the coast during
the 3 day period and up to 15.5 inches in the coastal mountains of
Curry County. Moderate flooding occurred on coastal rivers and
streams, including the Coquille River at Coquille and the South Fork
of the  Coquille River at Myrtle Point as well as flooding on small
streams in the coastal areas. Landslides also occurred and impacted
coastal highways and roads. Minor flooding occurred in the Umpqua,
including at Elk Creek near Drain. East of the Cascades flooding was
caused due to rain and snow melt. This affected the Pit River,
Sprague River, Lakeview area and many small streams in Lake County.

After this very wet frontal system, some weaker weather systems
moved into the area with additional light to moderate rain falling in
the Medford area through the third week of April. Periods of warm
and dry weather occurred between active weather systems during the
middle of the month. During one of these periods of dry weather,
when high pressure set up over the region, Medford warmed up with a
high of 85 degrees observed on April 18th. Finally, in the last 10
days of the month a relatively warm and dry pattern set up over the
area bringing above normal temperatures. However, the combination of
a ridge offshore with a cold trough inland, resulted in some clear
and cold overnight conditions on the 28th and 29th with low
temperatures of 37 and 39 observed at the Medford airport,
respectively. During the last 3 days of April, frost and local
freeze conditions occurred in surrounding valley locations in Jackson
County.

The average temperature for the month was 55.9 degrees, which is 3.1
degrees above normal. The average maximum temperature was 66.9
degrees, which is 2.0 degrees above normal. The average minimum
temperature was 45.0 degrees, which is 4.2 degrees above normal. The
highest temperature for the month was 85 degrees which occurred on
the 18th. The lowest temperature for the month was 37 degrees which
occurred on the 28th.

There were 10 clear days, 11 partly cloudy days, and 9 cloudy days.

Total precipitation for the month was 3.01 inches which is 1.63
inches above normal. Total precipitation for the water year
(beginning October 1st) is 17.14 inches which is 1.97 inches above
normal. Calendar year precipitation is 11.94 inches which is 4.41
inches above normal. No snow was observed at Medford, which is the
normal value.

The average wind speed for the month was 4.3 mph. The fastest
recorded two-minute wind speed was 26 mph from the south which
occurred on the 6th. The peak wind was 34 mph from the south which
occurred on the 6th.

The highest pressure for the month was 30.51 inches on the 15th. The
lowest pressure for the month was 29.71 inches on the 10th.

Records:
-Two daily rainfall records were broken. The first was on the 7th
with 0.55 inches, breaking the old record of 0.36 inches set in
1935. The second was on the 8th with 0.82 inches, breaking the old
record of 0.41 inches set in 1995.

$$


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