Storm Station
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At a river or reservoir gauge

DCP network, identified by the register

Identifier
GFLV2
Latitude
38.97580 N
Longitude
77.24610 W
Elevation
-
Listed
Automatically, on 167 reports in 168 hours over the last seven days
Observed
8:15 PMEDT, 22 minutes ago

Ranking Statistics

At a river or reservoir gauge

Drawn as the kind of place it stands at. 98 instruments in Virginia stand at one.

Station charts

Difficult Run 1 SE Great Falls Report

Rank 688 of 1,554 in Virginia, Oct 17. The 247 rank orders a state's stations by their 247 score out of 100: how reliably they report, how accurate their readings are against a reference station, how their readings pass their checks, and how they stand against the forecast.

Ranking Statistics

247 score96.6of 100

Virginia median
95.9the median score of 1,554 stations
Scoring higher
684stations in Virginia
Sharing its score
10ranks 685 to 694
Points deducted
3.42.8 arrival, 0.4 forecast check, 0.2 reports received
Counted at the median
Accuracy, instrument checks, forecast checknot measured at this station; Virginia median 100.0, 100.0, 95.7
Next above
WAYV2rank 685; ahead on median arrival 23 min 59 s against 24 min
Next below
DMLV2rank 691; behind on reports received 99.4% against 99.2%
Sharing its rank
2other stations, equal on every measure

Equal scores are ordered by the share of scheduled reports received, then the reports due in the week (the longer record first), then the median arrival, then the longest silence.

  1. Reports receivedweight 3599.434.8 of 35 pointsVirginia median 97.6167 of 168 scheduled reports received in 7 days
  2. Arrivalweight 1072.07.2 of 10 pointsVirginia median 92.7half its reports arrived within 24 min
  3. Continuityweight 10100.010.0 of 10 pointsVirginia median 100.0longest silence 2 h, on a schedule of one report every 60 min
  4. Accuracyweight 20-20.0 of 20 points, at the medianVirginia median 100.0-
  5. Instrument checksweight 15-15.0 of 15 points, at the medianVirginia median 100.0-
  6. Forecast checkweight 10-9.6 of 10 points, at the medianVirginia median 95.7-

The score is the weighted mean of its six parts, from the last 7 days. How a station is ranked sets out each part.

How each part is scored
Reports received
Full marks for every scheduled report received, none for none, in proportion between
Arrival
Full marks for a median arrival within 10 min, none at 60 min
Continuity
Full marks for a longest silence of 3 reports or less (3 h), none for 72 (72 h)
Accuracy
Full marks within 1.5 °F of its reference, typically, none beyond 8.0 °F
Instrument checks
Full marks for no reading failed, none for 5 per cent or more
Forecast check
Full marks within 2 °F of the forecast on average, none at 8 °F
Schedule
every houron the hour's :15
Reports received, 24 hours
23 of 2495.8% of its schedule
Reports received, 7 days
167 of 16899.4% of its schedule
Days reported, 30 days
-
Longest silence, 7 days
2 hoursfrom Oct 15, 12:15 PM
Latest report
Oct 16, 2:15 AMlocal time
Time to reach Storm Station
24 min9 in 10 within 26 min

From Storm Station's own record of every report it heard from this station.

Its schedule is one report every hour, 24 in 24 hours. Two reports in the same hour count as one received.

Chart of the 1,554 ranked stations in Virginia on Oct 17 by the share of their scheduled reports received in Storm Station's own record, up to 7 days, in tenths: 0 to 9 per cent, 4; 10 to 19 per cent, 46; 20 to 29 per cent, 17; 30 to 39 per cent, 7; 40 to 49 per cent, 85; 50 to 59 per cent, 177; 60 to 69 per cent, 37; 70 to 79 per cent, 120; 80 to 89 per cent, 158; 90 to 99 per cent, 521; 100 per cent, 382. Difficult Run 1 SE Great Falls received 99.4 per cent, 167 of 168 scheduled reports, rank 688 of 1,554.WHERE IT RANKS IN VIRGINIA, Oct 17THIS ONE: 99.4%, 167 OF 168, RANK 688 OF 1,554PER CENT OF SCHEDULED REPORTS RECEIVEDIN STORM STATION'S OWN RECORD, UP TO 7 DAYS1101000 to 9410 to 194620 to 291730 to 39740 to 498550 to 5917760 to 693770 to 7912080 to 8915890 to 99521100382STATIONS, LOG SCALE
Chart of Difficult Run 1 SE Great Falls's rank in Virginia by how it reported, day by day, from 2026-09-26 to 2026-10-17: 2026-09-26 rank 255 of 729; 2026-09-27 rank 263 of 733; 2026-09-28 rank 294 of 807; 2026-09-29 rank 264 of 818; 2026-09-30 rank 271 of 818; 2026-10-01 rank 118 of 820; 2026-10-02 rank 665 of 1,140; 2026-10-03 rank 665 of 1,140; 2026-10-04 rank 658 of 1,183; 2026-10-05 rank 668 of 1,415; 2026-10-06 rank 661 of 1,444; 2026-10-07 rank 644 of 1,526; 2026-10-08 rank 447 of 1,534; 2026-10-09 rank 399 of 1,529; 2026-10-10 rank 403 of 1,530; 2026-10-11 rank 392 of 1,520; 2026-10-12 rank 388 of 1,532; 2026-10-13 rank 445 of 1,536; 2026-10-14 rank 434 of 1,537; 2026-10-15 rank 626 of 1,532; 2026-10-16 rank 671 of 1,541; 2026-10-17 rank 688 of 1,554.ITS RANK IN VIRGINIA, DAY BY DAYRANK, FIRST AT THE TOP1200400600800Sep 26Sep 30Oct 4Oct 8Oct 12Oct 16Oct 17
The ranking these charts were drawn from, as tables
Share of scheduled reports receivedStations
100%382
90 to 99%521
80 to 89%158
70 to 79%120
60 to 69%37
50 to 59%177
40 to 49%85
30 to 39%7
20 to 29%17
10 to 19%46
0 to 9%4
DayRankStations rankedShare received
Oct 17, 20266881,55499.4%
Oct 16, 20266711,54199.4%
Oct 15, 20266261,532100.0%
Oct 14, 20264341,537100.0%
Oct 13, 20264451,536100.0%
Oct 12, 20263881,532100.0%
Oct 11, 20263921,520100.0%
Oct 10, 20264031,530100.0%
Oct 9, 20263991,529100.0%
Oct 8, 20264471,53498.8%
Oct 7, 20266441,52698.8%
Oct 6, 20266611,44498.8%
Oct 5, 20266681,41598.8%
Oct 4, 20266581,18398.8%
Oct 3, 20266651,14098.7%
Oct 2, 20266651,14098.7%
Oct 1, 2026118820100.0%
Sep 30, 2026271818100.0%
Sep 29, 2026264818100.0%
Sep 28, 2026294807100.0%
Sep 27, 2026263733100.0%
Sep 26, 2026255729100.0%
Reports received at Difficult Run 1 SE Great Falls, reports from 2.0 to 4.0, the latest 2.0, in reports.REPORTS RECEIVEDreports012349 PMOct 163 AM6 AM9 AM12 PM3 PM6 PM
Reports received at Difficult Run 1 SE Great Falls, reports from 2.0 to 4.0, the latest 2.0, in reports.REPORTS RECEIVEDreports01234Sat 10Sun 11Mon 12Tue 13Wed 14Thu 15Fri 16

Near Difficult Run 1 SE Great Falls