Sunday, April 06, 2014
Winter '13 / '14 - 13th Annual 'Season-total' Snowfall Forecast Contest: Forecaster STP
by
TQ
@
6:43 PM
Table ranks Forecasters by their expected cumulative season-total snowfall (STP) compared to the cumulative observed season-total snowfall only. It does not indicate how well the forecast verified.
Observed: 1412.7"
Period-or-Record normal (PORN): 934"
The cumulative season-total snowfall was 479" (51%) above normal.
GREEN - 75th percentile and above
RED - 25th percentile and below
Winter '13 / '14 - 13th Annual 'Season-total' Snowfall Forecast Contest: Season-total Snowfall
by
TQ
@
6:24 PM
GREEN - 75th percentile and above
RED - 25th percentile and below
Only one station (RDU) did not observe at least 100% of their period-of-record normal (PORN) snowfall.
Winter '13 / '14 was a Mid-Atlantic season hands-down.
Lollypop for the 68" at PHL (323% above PORN).
Wednesday, March 19, 2014
Winter '13 / '14 - Storm #8: FINAL Results
by
TQ
@
4:42 PM
SUMSQ: sum of square errors
STP: storm-total precipitation error
TAE: total absolute error
AAE: average absolute error
(number): category rank
---
Full forecast verification and summary for Storm #8 at the Contest/s web site here.
Tuesday, March 18, 2014
Winter '13 / '14 - Storm #8: Preliminary Verification
by
TQ
@
11:47 PM
UPDATE 2:
Delayed issuance of SBY climate bulletins carried 5" STP coinciding with local media report in PNSAKQ. CLI STP at odds with METAR data; however...it is what it is.
UPDATE @ 3:42 PM
Re-analysis of SBY 6-group and P-group data indicates 0.39" liquid and 3.9" STP at 10:1 SN:H2O.
---
Original post @ 10:01 AM
Preliminary storm-total snowfalls for Sunday and Monday from CDUS41 and CXUS51.
Good coverage and reporting.
SBY/s 1.8" STP estimated from the METAR 6-group at 10:1 SN:H2O.
Six new daily records
SUN...16-MAR-14
IAD - 6.6" (1.6"; 1978)
ACY - 2.2" (1.7"; 1978)
MON...17-MAR-14
PHL - 4.7" (3.5"; 1892)
IAD - 4.5" (1.9"; 1965)
DCA - 3.9" (1.9"; 1965)
ACY - 3.7" (1.6"; 1965)
---
Please report any errors in Comments along with a link to the correct data.
Final results Wednesday evening.
Delayed issuance of SBY climate bulletins carried 5" STP coinciding with local media report in PNSAKQ. CLI STP at odds with METAR data; however...it is what it is.
UPDATE @ 3:42 PM
Re-analysis of SBY 6-group and P-group data indicates 0.39" liquid and 3.9" STP at 10:1 SN:H2O.
---
Original post @ 10:01 AM
Preliminary storm-total snowfalls for Sunday and Monday from CDUS41 and CXUS51.
Good coverage and reporting.
Six new daily records
SUN...16-MAR-14
IAD - 6.6" (1.6"; 1978)
ACY - 2.2" (1.7"; 1978)
MON...17-MAR-14
PHL - 4.7" (3.5"; 1892)
IAD - 4.5" (1.9"; 1965)
DCA - 3.9" (1.9"; 1965)
ACY - 3.7" (1.6"; 1965)
---
Please report any errors in Comments along with a link to the correct data.
Final results Wednesday evening.
Sunday, March 16, 2014
Winter '13 / '14 - Storm #7: FINAL Results
by
TQ
@
7:40 PM
SUMSQ: sum of square errors
STP: storm-total precipitation error
TAE:
total absolute error
AAE: average absolute error
(number): category
rank
---
Full forecast verification and summary for Storm #7 at the Contest/s web site here.
Winter '13 / '14 - Storm #8: The Forecasts!
by
TQ
@
3:03 PM
Rookie 0
Intern 1
Journey 1
Senior 6
TOT 8
101 station forecasts.
Forecasts are ranked by their storm-total precipitation (STP).
BLUE ==> 25th percentile.
RED ==> 75th percentile.
STP cells without color are between the 25th and 75th percentile.
Heaviest snowfall (+4") consensus across DC-BATLO metro area extending onto the Delmarva with the lollypop expected at IAD. Another consensus about whether this was a contest-worthy event!
<still speechless>
Everyone/s station-by-station forecast at the Contest/s web site.
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