Weather Blog

Down goes Frazier?

Down goes Frazier?
It's been the king for a long time, but it is king no more…

With the rain early Friday morning, August 1st is no longer among the trio of driest days in Seattle.  It's just the 10th time in the past 116 years it has rained on this date. That leaves August 4th and July 30th -- which just barely survived -- as the only dates with just 9 instances of rain throughout Seattle history. (See the full chart here).

But how much rain fell was quite variable. Using data from NOAA's new CoCoRahs "Citizen rainfall tracking" project (If you can, please sign up!) you can see the rain was heavier over the Kitsap Peninsula, with a sliding scale downward as you go southeast:



(Thanks again to Mark Alrbight at UW for pointing this out and for being a treasure trove of cool weather information.)

As more people sign up for this project, we expect even better data during rain.

Also, I'm going to try something new and recurring -- at the end of each month, I'll give you the monthly recap. Here is the one for this July:

The average high temperature was 74.9 degrees. That is just about spot -on normal, which is officially 75.1 degrees. We were a bit drier than usual, with only 0.48" of rain received. Normal is 0.79".  The 0.48" is tied for 19th driest since 1948, which really isn't that impressive since we're only talking 60 years.

Even the sunshine was pretty close to normal. We average 10 sunny days, 10 partly cloudy days and 11 cloudy days. This year, the scoreboard went 9, 18 and 4 -- hey it was a bit less cloudy than usual. Surely making up for the gloomy spring, right?

As to where we go from here, the 90 day forecast for August, September and October calls for below normal temperatures overall but average rainfall.

Here is the statistical chart for July from the National Weather Service:

STATION: SEATTLE-TACOMA AIRPORT
MONTH: JULY
YEAR: 2008
LATITUDE: 47 27 N
LONGITUDE: 122 18 W

TEMPERATURE IN F: :PCPN: SNOW: WIND :SUNSHINE: SKY :PK WND
================================================================================
1 2 3 4 5 6A 6B 7 8 9 10 11 12 13 14 15 16 17 18
AVG MX 2MIN
DY MAX MIN AVG DEP HDD CDD WTR SNW DPTH SPD SPD DIR MIN PSBL S-S WX SPD DR
================================================================================

1 76 55 66 3 0 1 0.00 0.0 0 5.1 12 210 M M 5 8 14 210
2 82 55 69 5 0 4 T 0.0 0 4.6 13 310 M M 6 18 10
3 72 56 64 0 1 0 0.25 0.0 0 5.2 13 210 M M 8 13 17 230
4 71 59 65 1 0 0 0.00 0.0 0 7.7 20 210 M M 8 8 23 210
5 70 58 64 0 1 0 T 0.0 0 6.6 16 210 M M 9 18 20 230
6 69 56 63 -1 2 0 0.00 0.0 0 6.6 13 30 M M 8 16 320
7 76 54 65 1 0 0 0.00 0.0 0 8.1 15 350 M M 1 18 340
8 84 54 69 4 0 4 0.00 0.0 0 7.6 17 40 M M 2 22 40
9 82 62 72 7 0 7 0.00 0.0 0 10.4 21 20 M M 1 25 30
10 73 54 64 -1 1 0 0.00 0.0 0 5.9 14 40 M M 5 17 40
11 81 52 67 2 0 2 0.00 0.0 0 6.9 15 340 M M 1 17 360
12 87 58 73 8 0 8 0.00 0.0 0 7.3 14 40 M M 1 20 360
13 85 61 73 8 0 8 0.00 0.0 0 4.7 14 30 M M 2 15 20
14 81 56 69 4 0 4 0.00 0.0 0 7.2 18 30 M M 3 23 20
15 84 59 72 6 0 7 0.00 0.0 0 7.1 18 30 M M 3 23 40
16 75 53 64 -2 1 0 0.00 0.0 0 5.9 12 200 M M 1 20 240
17 71 52 62 -4 3 0 0.00 0.0 0 6.2 10 200 M M 6 18 13 210
18 66 54 60 -6 5 0 0.00 0.0 0 6.5 14 240 M M 7 17 240
19 73 53 63 -3 2 0 0.00 0.0 0 5.4 14 290 M M 5 128 20 290
20 80 51 66 0 0 1 0.00 0.0 0 5.3 13 10 M M 0 15 20
21 74 54 64 -2 1 0 0.00 0.0 0 4.8 9 10 M M 3 18 13 250
22 65 54 60 -6 5 0 0.00 0.0 0 9.2 16 220 M M 9 18 220
23 65 53 59 -7 6 0 0.00 0.0 0 5.6 13 190 M M 7 16 210
24 76 53 65 -1 0 0 0.00 0.0 0 6.2 14 350 M M 4 8 21 360
25 76 54 65 -1 0 0 0.00 0.0 0 5.9 13 260 M M 5 17 210
26 74 53 64 -2 1 0 0.00 0.0 0 6.2 13 240 M M 7 16 240
27 73 57 65 -1 0 0 T 0.0 0 9.9 17 210 M M 9 1 21 200
28 78 54 66 0 0 1 0.00 0.0 0 6.0 15 200 M M 7 17 200
29 64 55 60 -6 5 0 0.11 0.0 0 9.0 18 210 M M 9 1 25 200
30 67 53 60 -6 5 0 0.00 0.0 0 5.6 14 200 M M 7 17 190
31 72 51 62 -4 3 0 0.12 0.0 0 4.9 13 320 M M 7 1 17 140
================================================================================
SM 2322 1703 42 47 0.48 0.0 203.6 M 156
================================================================================
AV 74.9 54.9 6.6 FASTST M M 5 MAX(MPH)
MISC ----> # 21 20 # 25 30
================================================================================
NOTES:
# LAST OF SEVERAL OCCURRENCES

COLUMN 17 PEAK WIND IN M.P.H.

PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) , PAGE 2

STATION: SEATTLE-TACOMA AIRPORT
MONTH: JULY
YEAR: 2008
LATITUDE: 47 27 N
LONGITUDE: 122 18 W

[TEMPERATURE DATA] [PRECIPITATION DATA] SYMBOLS USED IN COLUMN 16

AVERAGE MONTHLY: 64.9 TOTAL FOR MONTH: 0.48 1 = FOG OR MIST
DPTR FM NORMAL: -0.4 DPTR FM NORMAL: -0.31 2 = FOG REDUCING VISIBILITY
HIGHEST: 87 ON 12 GRTST 24HR 0.25 ON 3- 3 TO 1/4 MILE OR LESS
LOWEST: 51 ON 31,20 3 = THUNDER
SNOW, ICE PELLETS, HAIL 4 = ICE PELLETS
TOTAL MONTH: 0.0 INCH 5 = HAIL
GRTST 24HR 0.0 6 = FREEZING RAIN OR DRIZZLE
GRTST DEPTH: 0 7 = DUSTSTORM OR SANDSTORM:
VSBY 1/2 MILE OR LESS
8 = SMOKE OR HAZE
[NO. OF DAYS WITH] [WEATHER - DAYS WITH] 9 = BLOWING SNOW
X = TORNADO
MAX 32 OR BELOW: 0 0.01 INCH OR MORE: 3
MAX 90 OR ABOVE: 0 0.10 INCH OR MORE: 3
MIN 32 OR BELOW: 0 0.50 INCH OR MORE: 0
MIN 0 OR BELOW: 0 1.00 INCH OR MORE: 0

[HDD (BASE 65) ]
TOTAL THIS MO. 42 CLEAR (SCALE 0-3) 9
DPTR FM NORMAL -13 PTCLDY (SCALE 4-7) 18
TOTAL FM JUL 1 42 CLOUDY (SCALE 8-10) 4
DPTR FM NORMAL -13

[CDD (BASE 65) ]
TOTAL THIS MO. 47
DPTR FM NORMAL -18 [PRESSURE DATA]
TOTAL FM JAN 1 97 HIGHEST SLP M ON M
DPTR FM NORMAL 8 LOWEST SLP 29.82 ON 2