- Stage now
- 186.65 ftreported Oct 15, 4:00 AM CDT
- 24 hour change
- -
- Elevation
- 190 ftabove sea level
- County
- Tuscaloosa County
- Position
- 33.4528° N, 87.3572° W
- Record since
- 2010
Water level
Black Warrior River 18 WNW Bankhead Lock and Dam
Stage is the height of the water's surface above the gauge's own fixed zero, in feet, not the depth of the water. Every point drawn is a reading the gauge sent, at the time it sent it.
Left out: 1 reading the gauge sent that were not the water, the furthest 254.92 ft on Oct 14. A reading is left out when it leaps away from the water and straight back, sticks on one value, or swings with a gauge in ice or failing.
- Latest
- 186.65 ftOct 15, 4:00 AM
- Highest
- 186.66 ftOct 11, 4:00 AM
- Lowest
- 186.46 ftOct 12, 4:00 AM
- Range
- 0.20 fthighest less lowest
- Change
- Fell 0.01 ftsince Oct 11, 4:00 AM
- Readings
- 4
- Left out
- 1not the water
The readings these charts were drawn from, as a table
| Time | Stage ft |
|---|---|
| Oct 15, 4:00 AM | 186.65 |
| Oct 13, 4:00 AM | 186.64 |
| Oct 12, 4:00 AM | 186.46 |
| Oct 11, 4:00 AM | 186.66 |
Left out: 1 reading the gauge sent that were not the water, the furthest 254.92 ft on Oct 14. A reading is left out when it leaps away from the water and straight back, sticks on one value, or swings with a gauge in ice or failing.
- Latest
- 186.65 ftOct 15, 4:00 AM
- Highest
- 254.38 ftSep 27, 6:00 AM
- Lowest
- 186.07 ftSep 22, 4:00 AM
- Range
- 68.31 fthighest less lowest
- Change
- Rose 0.20 ftsince Sep 16, 4:00 AM
- Readings
- 20
- Left out
- 1not the water
The readings these charts were drawn from, as a table
| Day | High ft | Low ft | Average ft | Last ft | Readings |
|---|---|---|---|---|---|
| Oct 15 | 186.65 | 186.65 | 186.65 | 186.65 | 1 |
| Oct 13 | 186.64 | 186.64 | 186.64 | 186.64 | 1 |
| Oct 12 | 186.46 | 186.46 | 186.46 | 186.46 | 1 |
| Oct 11 | 186.66 | 186.66 | 186.66 | 186.66 | 1 |
| Oct 4 | 186.46 | 186.46 | 186.46 | 186.46 | 1 |
| Oct 3 | 186.58 | 186.58 | 186.58 | 186.58 | 1 |
| Oct 2 | 186.31 | 186.31 | 186.31 | 186.31 | 1 |
| Oct 1 | 186.31 | 186.31 | 186.31 | 186.31 | 1 |
| Sep 30 | 186.91 | 186.91 | 186.91 | 186.91 | 1 |
| Sep 28 | 186.14 | 186.14 | 186.14 | 186.14 | 1 |
| Sep 27 | 254.38 | 254.38 | 254.38 | 254.38 | 1 |
| Sep 26 | 254.35 | 254.35 | 254.35 | 254.35 | 1 |
| Sep 23 | 186.23 | 186.23 | 186.23 | 186.23 | 1 |
| Sep 22 | 186.07 | 186.07 | 186.07 | 186.07 | 1 |
| Sep 21 | 186.27 | 186.27 | 186.27 | 186.27 | 1 |
| Sep 20 | 186.42 | 186.42 | 186.42 | 186.42 | 1 |
| Sep 19 | 186.43 | 186.43 | 186.43 | 186.43 | 1 |
| Sep 18 | 186.34 | 186.34 | 186.34 | 186.34 | 1 |
| Sep 17 | 186.54 | 186.54 | 186.54 | 186.54 | 1 |
| Sep 16 | 186.45 | 186.45 | 186.45 | 186.45 | 1 |
How it reports
- Schedule
- every 30 minon the hour's :00 and :30
- Reports received, 24 hours
- 45 of 4893.7% of its schedule
- Reports received, 7 days
- 330 of 33698.2% of its schedule
- Longest silence, 7 days
- 1 hourfrom Oct 9, 10:30 AM
- Latest report
- Oct 16, 12:30 AMlocal time
- Time to reach Storm Station
- 27 min9 in 10 within 47 min
From Storm Station's own record of every report it heard from this station.
Its schedule is one report every 30 min, 48 in 24 hours. Two reports in the same 30 min count as one received.
Ranking Statistics
247 score95.4of 100
- Alabama median
- 95.6the median score of 798 stations
- Scoring higher
- 417stations in Alabama
- Sharing its score
- 2ranks 418 to 419
- Points deducted
- 4.63.4 arrival, 0.7 reports received, 0.5 forecast check
- Counted at the median
- Accuracy, instrument checks, forecast checknot measured at this station; Alabama median 100.0, 100.0, 95.4
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.
- Reports receivedweight 3597.934.3 of 35 pointsAlabama median 98.8329 of 336 scheduled reports received in 7 days
- Arrivalweight 1066.06.6 of 10 pointsAlabama median 87.5half its reports arrived within 27 min
- Continuityweight 10100.010.0 of 10 pointsAlabama median 100.0longest silence 60 min, on a schedule of one report every 30 min
- Accuracyweight 20-20.0 of 20 points, at the medianAlabama median 100.0-
- Instrument checksweight 15-15.0 of 15 points, at the medianAlabama median 100.0-
- Forecast checkweight 10-9.5 of 10 points, at the medianAlabama median 95.4-
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 (1.5 h), none for 72 (36 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
Near Black Warrior River 18 WNW Bankhead Lock and Dam
Gauges
Weather instruments
How to read a gauge
A gauge measures the height of the water where it stands, its stage, in feet above a fixed mark at that gauge. Two gauges' stages are not comparable: each is measured from its own mark, and a reservoir's is often its height above sea level.
The stage shown is the latest the gauge reported, with the time it reported it. Storm Station hears each gauge on its own schedule and ranks it among its state's stations by its 247 score, how reliably it reports and how its readings hold up: that is its 247 rank.