The daily one is not very accurate. For example on the night of 30th Sept the prediction was 'Active 4kp' but when I was taking photographs the imminent forecast was 'Storm level 6.6kp.' And today 8th October it has a prediction of 2kp yet at 2pm it was storm level 7kp!
The worst prediction was on night of 7th August when I saw a good display and it was predicted as 'Quiet 1kp' On the night of 27th March when I saw a display it was predicted as 'Moderate 3kp'.
The other two dates seemed much more accurate so Carolyne's on about the 17th March was predicted as 'High 4kp' from nights of 15th to 19th March and mine on night of 23rd April was 'High 5kp.'
Any daily prediction of kp3 or above is definitely worth checking. The best thing is to look at the sky for anything too green and then use still peripheral vision.
To give a rough idea of aurora activity I looked at the daily forecasts for the whole year so far showing level 3 and above. Green is level 3kp, Yellow is level 4kp and Red is level 5kp.
Oct
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Sept
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Aug
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Jul
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Jun
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May
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Apr
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Mar
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Feb
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Jan
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1st
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21st
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27th
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30th
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18th
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24th
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29th
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28th
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27th
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30th
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20th
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26th
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29th
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17th
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23rd
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27th
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27th
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26th
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25th
|
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14th
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23rd
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24th
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16th
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22nd
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26th
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22nd
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24th
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24th
|
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12th
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20th
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22nd
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5th
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20st
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25th
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21st
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23rd
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22nd
|
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6th
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18th
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20th
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4th
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19th
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24th
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20th
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21st
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21st
|
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5th
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17th
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17th
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18th
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23rd
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18th
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19th
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20th
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||
4th
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16th
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17th
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18th
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17th
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18th
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14th
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1st
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15th
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12th
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17th
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16th
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17th
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13th
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14th
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11th
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13th
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15th
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14th
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5th
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3rd
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9th
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12th
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14th
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13th
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4th
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2nd
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8th
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11th
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12th
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10th
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3rd
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1st
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10th
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11th
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2nd
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7th
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10th
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6th
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9th
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||||||||
5th
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8th
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4th
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7th
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3th
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6th
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2nd
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3rd
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1st
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2nd
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9th Oct: 11pm-at least 2am
8th Oct: 9.45pm-4am
1st Oct: 2.15-5.45am
8th August: 2-2.30am
24rd April: about 2am
28th March: 2.30am
about 17th March: Carolyne.
QI fact: On 2nd Sept 1859 the aurora was so strong that telegraph operators could transmit messages using only the electromagnetic charge of the storm (Wikipedia).