Rule Storm Chaser

Storm Chaser Forecast for Hvítserkur, Iceland Coast

Hvammstangi, Northwest, Iceland

Hvítserkur is a narrow, animal-shaped basalt stack in Húnaflói, surrounded at low tide by reflective flats and patterned black sand.

Currently

Real-time conditions

Storm Intensity

CAPE0

Lifted Index8.4°C

Wind Gusts1.9m/s

Precipitation0.0mm

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Atlantic/Reykjavik

Next opportunity

Weak Storm

Hvítserkur

Tomorrow · 12:00–13:00 · 1h window

Medium confidence

44%

⛈️Storm Intensity40%

CAPE: 0

Lifted Index: 8.9°C

Wind Gusts: 11.7m/s

Precipitation: 0.1mm

Moderate Storm

Hvítserkur

Tomorrow · 15:00–19:00

⛈️Storm Intensity:49-55%

Low

Weak Storm

Hvítserkur

Tomorrow · 23:00–01:00

⛈️Storm Intensity:40-49%

Low

Weak Storm

Hvítserkur

Sun, Aug 30 · 21:00–23:00

⛈️Storm Intensity:40-47%

Low

Weak Storm

Hvítserkur

Mon, Aug 31 · 24:00–01:00

⛈️Storm Intensity:45%

Low

How this forecast is evaluated

See which weather signals PhotoWeather uses to identify Storm Chaser conditions across Iceland Coast. The requirements and hourly values below show how those signals apply at Hvítserkur.

Explore Storm Chaser conditions across Iceland Coast →

Recorded match history

Completed PhotoWeather forecast matches recorded for this exact rule at Hvítserkur during the last 365 days.

Last 30 days

recorded matching windows · 51% average confidence

Last 90 days

recorded matching windows · 51% average confidence

Last 365 days

recorded matching windows · 51% average confidence

Only 9 completed matches are recorded in the last 365 days—insufficient history to identify a reliable typical start time or month.

These figures use completed PhotoWeather MatchEvent records from the previous 365 days only. They describe recorded forecast matches, not observations, climatological probability, or a guarantee of future conditions.

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86-hour requirements breakdown

When available, the detailed table below covers only the stated 86-hour horizon (typically 72–168 hours, depending on available hourly data). Opportunity records above span the next 14 days, so this table does not explain that entire 14-day period.

What passed or failed, hour by hour

7matching hours in the next 86 hoursJump to next match

AND logic: all conditions required

Meets requirement

Misses requirement

Time Atlantic/Reykjavik	Storm Intensity ≥ 40.0%
Sun, Aug 23
04:00	0%
05:00	0%
06:00	15%
07:00	17%
08:00	0%
09:00	0%
10:00	0%
11:00	20%
12:00	13%
13:00	16%
14:00	17%
15:00	20%
16:00	16%
17:00	13%
18:00	11%
19:00	0%
20:00	0%
21:00	9.1%
22:00	0%
23:00	0%
Mon, Aug 24
24:00	11%
01:00	0%
02:00	0%
03:00	11%
04:00	0%
05:00	14%
06:00	32%
07:00	22%
08:00	22%
09:00	34%
10:00	24%
11:00	25%
12:00	40%
13:00	29%
14:00	34%
15:00	55%
16:00	49%
17:00	49%
18:00	55%
19:00	31%
20:00	32%
21:00	38%
22:00	34%
23:00	40%
Tue, Aug 25
24:00	49%
01:00	34%
02:00	32%
03:00	35%
04:00	31%
05:00	31%
06:00	37%
07:00	13%
08:00	0%
09:00	14%
10:00	0%
11:00	12%
12:00	26%
13:00	0%
14:00	0%
15:00	13%
16:00	0%
17:00	0%
18:00	0%
19:00	0%
20:00	0%
21:00	0%
22:00	0%
23:00	0%
Wed, Aug 26
24:00	0%
01:00	0%
02:00	0%
03:00	17%
04:00	0%
05:00	0%
06:00	18%
07:00	0%
08:00	0%
09:00	0%
10:00	0%
11:00	13%
12:00	19%
13:00	0%
14:00	0%
15:00	0%
16:00	0%
17:00	0%

How to read: colored cells show whether each predicate requirement is met; highlighted rows mean the full rule matched (an opportunity).

What does Storm Intensity mean?

Inputs that drive the score

This derived score summarizes multiple raw weather signals. The table below shows the supporting inputs hour by hour, so you can see what's pushing the score up or down.

Time Atlantic/Reykjavik	Air Pressure hPa	CAPE J/kg	Convective Precip Fraction fraction	Lifted Index °C	Precipitation Chance %	Rainfall mm	Showers mm	Simulated Reflectivity dBZ	Total Precipitation mm	Visibility m	Wind Gusts m/s	Wind Shear 0-3 km m/s	Wind Shear 0-6 km m/s	Wind Speed m/s
Sun, Aug 23 Sunrise 05:33 Sunset 21:17
20:00	999hPa	0J/kg	0.08fraction	8.4°C	0%	0mm	0mm	-17dBZ	0mm	24135m	1.9m/s	-	-	1.8m/s
21:00	1000hPa	0J/kg	0fraction	7.8°C	0%	0mm	0mm	-20dBZ	0mm	24135m	1.4m/s	7.2m/s	12m/s	1.3m/s
22:00 ☾	1000hPa	0J/kg	0fraction	8.1°C	0%	0mm	0mm	-20dBZ	0mm	24135m	1.6m/s	-	-	1.6m/s
23:00 ☾	1000hPa	0J/kg	0fraction	8.9°C	0%	0mm	0mm	-20dBZ	0mm	24134m	1.7m/s	-	-	1.7m/s
Mon, Aug 24 Sunrise 05:36 Sunset 21:13
24:00 ☾	1001hPa	0J/kg	0fraction	9.5°C	0%	0mm	0mm	-20dBZ	0mm	24135m	1.7m/s	6.6m/s	16m/s	1.7m/s
01:00 ☾	1000hPa	0J/kg	0fraction	11°C	12%	0mm	0mm	-20dBZ	0mm	24135m	1.7m/s	-	-	1.5m/s
02:00 ☾	1000hPa	0J/kg	0fraction	11°C	24%	0mm	0mm	-20dBZ	0mm	24134m	1.8m/s	-	-	1.7m/s
03:00 ☾	1000hPa	0J/kg	0fraction	11°C	36%	0mm	0mm	-20dBZ	0mm	24134m	2.7m/s	8.3m/s	18m/s	2.4m/s
04:00 ☾	1000hPa	0J/kg	0fraction	11°C	50%	0mm	0mm	-20dBZ	0mm	24134m	4.8m/s	-	-	3.8m/s
05:00 ☾	1000hPa	0J/kg	0fraction	11°C	64%	0mm	0mm	-20dBZ	0mm	24134m	6.4m/s	-	-	4.8m/s
06:00	1000hPa	0J/kg	0fraction	10°C	78%	0mm	0mm	-20dBZ	0mm	24135m	9.6m/s	14m/s	21m/s	9m/s
07:00	1000hPa	0J/kg	0fraction	11°C	84%	0.01mm	0mm	-15dBZ	0mm	22619m	10m/s	-	-	10m/s
08:00	1000hPa	0J/kg	0fraction	10°C	89%	0mm	0mm	-11dBZ	0mm	24134m	11m/s	-	-	10m/s
09:00	1000hPa	0J/kg	0fraction	8.9°C	95%	0mm	0mm	-6dBZ	0mm	24135m	12m/s	13m/s	24m/s	11m/s
10:00	999hPa	0J/kg	0fraction	8.3°C	97%	0mm	0mm	4.5dBZ	0mm	24134m	12m/s	-	-	10m/s
11:00	999hPa	0J/kg	0fraction	8.6°C	98%	0.01mm	0mm	15dBZ	0mm	24134m	12m/s	-	-	11m/s
12:00	998hPa	0J/kg	0.006fraction	8.9°C	100%	0.16mm	0.01mm	25dBZ	0.06mm	22054m	12m/s	16m/s	29m/s	11m/s
13:00	997hPa	1J/kg	0fraction	8.9°C	97%	0.81mm	0mm	26dBZ	0.69mm	11845m	12m/s	-	-	11m/s
14:00	996hPa	2J/kg	0fraction	8.9°C	93%	1.6mm	0mm	26dBZ	1.9mm	7848m	14m/s	-	-	11m/s
15:00	995hPa	4J/kg	0fraction	8.9°C	90%	4.9mm	0mm	27dBZ	4.9mm	1999m	15m/s	30m/s	24m/s	13m/s
16:00	994hPa	2J/kg	0fraction	6.8°C	91%	1.7mm	0mm	25dBZ	8.5mm	1011m	15m/s	-	-	13m/s
17:00	993hPa	2J/kg	0fraction	5.5°C	93%	1.1mm	0mm	24dBZ	9.9mm	996m	15m/s	-	-	12m/s
18:00	992hPa	2J/kg	0.002fraction	4°C	94%	0.42mm	0mm	22dBZ	11mm	1584m	11m/s	13m/s	7.7m/s	9.8m/s
19:00	992hPa	3J/kg	0fraction	3°C	84%	0.67mm	0mm	22dBZ	0.38mm	2622m	10m/s	-	-	9m/s
20:00	992hPa	2J/kg	0fraction	2.7°C	74%	1.2mm	0mm	21dBZ	1.3mm	3179m	8.7m/s	-	-	8.1m/s
21:00	992hPa	2J/kg	0.006fraction	2.9°C	64%	0.21mm	0mm	20dBZ	1.9mm	3163m	8.9m/s	12m/s	15m/s	8.6m/s
22:00 ☾	993hPa	5J/kg	0.01fraction	3.6°C	69%	0.18mm	0mm	22dBZ	1.9mm	1486m	11m/s	-	-	10m/s
23:00 ☾	993hPa	3J/kg	0.01fraction	5.7°C	73%	0.87mm	0mm	24dBZ	2.5mm	534m	11m/s	-	-	10m/s
Tue, Aug 25 Sunrise 05:39 Sunset 21:09
24:00 ☾	994hPa	1J/kg	0.01fraction	5.6°C	77%	0.44mm	0mm	26dBZ	3.1mm	442m	11m/s	13m/s	14m/s	9.9m/s
01:00 ☾	995hPa	4J/kg	0.01fraction	5.2°C	68%	0.07mm	0mm	24dBZ	0.13mm	363m	11m/s	-	-	10m/s
02:00 ☾	995hPa	3J/kg	0.01fraction	5°C	59%	0.28mm	0.02mm	22dBZ	0.31mm	286m	10m/s	-	-	9.6m/s
03:00 ☾	996hPa	6J/kg	0.01fraction	4.8°C	49%	1.5mm	0.02mm	20dBZ	1.4mm	566m	8.5m/s	3.2m/s	11m/s	8.2m/s
04:00 ☾	997hPa	5J/kg	0.01fraction	5.6°C	53%	1.6mm	0.01mm	17dBZ	3.1mm	1030m	7.2m/s	-	-	7m/s
05:00 ☾	998hPa	3J/kg	0fraction	7.1°C	57%	1.4mm	0.01mm	15dBZ	4.7mm	1264m	5.7m/s	-	-	5.8m/s
06:00	999hPa	1J/kg	0fraction	7.1°C	62%	0.85mm	0.01mm	12dBZ	5.7mm	1621m	4.6m/s	3.6m/s	8m/s	4.8m/s
07:00	999hPa	2J/kg	0.04fraction	7.3°C	48%	0.09mm	0mm	1.3dBZ	0.38mm	2846m	4.4m/s	-	-	4.7m/s
08:00	1000hPa	2J/kg	0.07fraction	6.9°C	35%	0.07mm	0mm	-9.4dBZ	0.38mm	5918m	4.4m/s	-	-	4.8m/s
09:00	1001hPa	4J/kg	0.11fraction	6.9°C	22%	0.35mm	0mm	-20dBZ	0.56mm	6035m	4.7m/s	7.4m/s	11m/s	5m/s
10:00	1002hPa	7J/kg	0.14fraction	7.2°C	36%	0.47mm	0mm	-19dBZ	0.94mm	5260m	4.6m/s	-	-	4.9m/s
11:00	1002hPa	2J/kg	0.17fraction	7.6°C	50%	0.19mm	0mm	-18dBZ	1.3mm	10061m	4.2m/s	-	-	4.6m/s
12:00	1003hPa	0J/kg	0.19fraction	7.9°C	64%	0.01mm	0mm	-17dBZ	1.3mm	11092m	4m/s	7.1m/s	16m/s	4.6m/s
13:00	1004hPa	0J/kg	0.13fraction	8.4°C	56%	0mm	0mm	-8dBZ	0mm	10371m	3.9m/s	-	-	4.8m/s
14:00	1004hPa	0J/kg	0.06fraction	8.3°C	47%	0mm	0mm	0.91dBZ	0mm	9902m	4.6m/s	-	-	5.2m/s
15:00	1005hPa	0J/kg	0fraction	7.6°C	39%	0mm	0mm	9.8dBZ	0mm	13020m	4.7m/s	7.3m/s	18m/s	5.4m/s
16:00	1005hPa	0J/kg	0.05fraction	6.7°C	32%	0mm	0mm	-0.1dBZ	0mm	24135m	5m/s	-	-	5.5m/s
17:00	1005hPa	0J/kg	0.1fraction	6.4°C	24%	0.04mm	0mm	-10dBZ	0.06mm	24135m	5.5m/s	-	-	5.8m/s
18:00	1006hPa	1J/kg	0.15fraction	6.2°C	17%	0.01mm	0mm	-20dBZ	0.06mm	24134m	5.9m/s	9.7m/s	17m/s	5.9m/s
19:00	1006hPa	1J/kg	0.1fraction	6.1°C	24%	0mm	0mm	-20dBZ	0mm	24135m	5.7m/s	-	-	5.7m/s
20:00	1007hPa	1J/kg	0.05fraction	6.2°C	31%	0.01mm	0mm	-20dBZ	0mm	24135m	6.1m/s	-	-	5.8m/s
21:00	1007hPa	2J/kg	0fraction	6.3°C	38%	0.01mm	0mm	-20dBZ	0mm	24135m	6.1m/s	12m/s	24m/s	5.7m/s
22:00 ☾	1008hPa	3J/kg	0fraction	6.2°C	39%	0mm	0mm	-14dBZ	0mm	24135m	6.1m/s	-	-	6.1m/s
23:00 ☾	1008hPa	2J/kg	0fraction	6.2°C	41%	0mm	0mm	-8.7dBZ	0mm	24135m	6.4m/s	-	-	6.3m/s
Wed, Aug 26 Sunrise 05:42 Sunset 21:06
24:00 ☾	1008hPa	0J/kg	0fraction	6°C	43%	0mm	0mm	-3dBZ	0mm	24135m	6.5m/s	14m/s	21m/s	6m/s
01:00 ☾	1009hPa	0J/kg	0.02fraction	5.2°C	39%	0.09mm	0mm	-4.5dBZ	0.38mm	22856m	6.4m/s	-	-	6m/s
02:00 ☾	1010hPa	0J/kg	0.04fraction	4.4°C	34%	0.17mm	0mm	-6dBZ	0.75mm	21577m	6.3m/s	-	-	6m/s
03:00 ☾	1011hPa	0J/kg	0.06fraction	3.6°C	30%	0.26mm	0mm	-7.5dBZ	1.1mm	20298m	6.2m/s	11m/s	17m/s	6m/s
04:00 ☾	1011hPa	0.67J/kg	0.05fraction	3.7°C	35%	0.18mm	0mm	-1.4dBZ	1.2mm	21577m	6m/s	-	-	5.9m/s
05:00 ☾	1012hPa	1.3J/kg	0.04fraction	3.8°C	40%	0.09mm	0mm	4.7dBZ	1.3mm	22856m	5.8m/s	-	-	5.9m/s
06:00	1012hPa	2J/kg	0.04fraction	3.8°C	46%	0.01mm	0mm	11dBZ	1.4mm	24135m	5.6m/s	11m/s	17m/s	5.9m/s
07:00	1012hPa	5J/kg	0.03fraction	3.7°C	46%	0.02mm	0mm	14dBZ	0.96mm	24135m	5.5m/s	-	-	5.8m/s
08:00	1012hPa	8J/kg	0.02fraction	3.5°C	46%	0.04mm	0mm	16dBZ	0.48mm	24135m	5.3m/s	-	-	5.7m/s
09:00	1012hPa	11J/kg	0.008fraction	3.3°C	46%	0.05mm	0mm	19dBZ	0mm	24135m	5.2m/s	13m/s	16m/s	5.6m/s
10:00	1011hPa	7.3J/kg	0.01fraction	3.4°C	53%	0.04mm	0mm	6.1dBZ	0.1mm	23533m	5.1m/s	-	-	5.4m/s
11:00	1011hPa	3.7J/kg	0.01fraction	3.6°C	60%	0.03mm	0mm	-6.9dBZ	0.21mm	22931m	5m/s	-	-	5.2m/s
12:00	1011hPa	0J/kg	0.01fraction	3.7°C	67%	0.02mm	0mm	-20dBZ	0.31mm	22329m	4.9m/s	8.8m/s	16m/s	5.1m/s
13:00	1011hPa	2J/kg	0.01fraction	3.3°C	55%	0.02mm	0mm	-12dBZ	0.23mm	17948m	5m/s	-	-	5.1m/s
14:00	1011hPa	4J/kg	0fraction	2.9°C	43%	0.01mm	0mm	-4.1dBZ	0.15mm	13566m	5.1m/s	-	-	5.1m/s
15:00	1011hPa	6J/kg	0fraction	2.5°C	31%	0.01mm	0mm	3.8dBZ	0.06mm	9185m	5.1m/s	10m/s	15m/s	5.1m/s
16:00	1011hPa	6.7J/kg	0.01fraction	2.4°C	34%	0.36mm	0.003mm	-4.1dBZ	0.48mm	6530m	5m/s	-	-	4.9m/s
17:00	1010hPa	7.3J/kg	0.03fraction	2.3°C	38%	0.7mm	0.007mm	-12dBZ	0.9mm	3875m	4.8m/s	-	-	4.7m/s
18:00	1010hPa	8J/kg	0.04fraction	2.2°C	42%	1.1mm	0.01mm	-20dBZ	1.3mm	1220m	4.6m/s	11m/s	18m/s	4.5m/s
19:00	1010hPa	7J/kg	0.08fraction	2.1°C	40%	1.1mm	0.007mm	-20dBZ	2.1mm	1073m	4.3m/s	-	-	4.1m/s

How to read: these inputs help produce the derived score; they are not requirements by themselves.

How this forecast is made

Opportunities are threshold-based signals: PhotoWeather checks whether forecast conditions match the rules for a photography scenario. They are planning guidance, not guarantees. Forecasts can change as new model runs arrive, and confidence generally decreases farther into the forecast horizon, so recheck conditions before travelling.

The weather forecast foundation comes through Open-Meteo , which aggregates models from weather agencies. PhotoWeather applies condition-specific thresholds and derived calculations; not every condition uses every model or data input.

How opportunities work → Weather data sources →

Forecast generated

Aug 23, 2026, 7:00 PM UTC

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