New position of the guys on the ice is N66°14.588′ W42°54.220′. So they are gradually building up some distance. And the next days will offer some possiblities as well! Forecast sent by 4 Iridium txt messages:

Day1-17May N66.250/W42.900
Wind: N 8-13kt after 15/18utc becmg 15-20kt till 09utc nxt morning
Wx: sunny
Temps: -20C later -10C

Day2-18May
Wind: N 13-18kt,after 09/12utc becmg less than 5kt.
Wx: sunny, later risk of a snow shower
Temps:-16C later -8C

Day3-19May
Wind: less than 5kt, after 18/21utc becmg 8-12kt (whole night)(nxt day less than 5kt)
Wx: sunny,patchy cloud
Temp:min-22C/max:-10C

Advice: Tomorrow nice kite day, after 15/18tc even 15-20kt during most of the night. nxt day rapdily becmg weak. So try to kite during the night as well.

(c) Weather Office Canada

Day1-16May N66.5/W40.5
Wind: N 8-13kt after 15/18utc N 5-10kt
Wx: mainly sunny
Temps: -16C later -10C

Day2-17May
Wind: N 8-13kt,after 15/18utc N 13-18kt till 6utc nxt morning.
Wx: sunny.
Temps:-18C later -8C

Day3-18May
Wind: NE 5-10kt after 12utc less than 5kt!
Wx: sunny, later more cloud risk for shower
Temp:min-14C/max:-10C

Advice: Tomorrow start as early as possible. On the 17th increasing wind after 15/18utc continue as long as you can because nxt day, wind dies off. Marc.

(c) Weather Office Canada

Now the storm is over, everything is calm again. Not exactly want Carl and Jon want! On the other hand there are a few possiblities to cover some distance.

Day1-15May N66/W40
Wind: less than 5kt, after 21/24utc becmg N 10-15kt (till 12utc nxt day)
Wx: very cloudy with slight snow. after 15ytc sunny
Temps: -12C later -6C

Day2-16May
Wind: N 8-13kt,after 12utc calm.
Wx: sunny.
Temps:-16C later -6C

Day3-17May
Wind: N 8-13kt after 15utc 5-10kt!
Wx: sunny and clear.
Temp:min-18C/max:-6C

Advice: tomorrow: during the day: rest + work on tan, travel after 21/24utc than more wind. Same next day. Dont lose hope! marc.

General: the worst part of the storm is over, and yes the wind dies off almost completely. There are a few spells with slightly more wind, so maybe they can cover some distance with that.
Hopefully they dont loose courage with those slack conditions because the wind within the near future is not promising.

This forecast is sent to Carl and Jon on the Greenland ice cap using 4 Iridium phone txt messages:

Day1-14May N66/W40
Wind: NNW 7-12kt, after 12/15utc becoming variable 3-6kt
Wx: sunny spells, after 15/18utc becoming overcast with slight snow.
Temps: -15C later -6C

Day2-15May
Wind: NW 3-8kt, between 9-15utc becoming NW 5-10kt.
Wx: overcast with slight snow, after 12/15utc enlarging sunny spells.
Temps:-6C later -4C

Day3-156May
Wind: N to NE 5-10kt after 15utc weak/calm!
Wx: sunny spells and cloudy periods. fair.
Temp:min-20C/max:-8C

Advice: if possible travel as much Northwards as possible because on longer term most pressure in the sails north of 67°N

Surface temperature profile at the Neem site (Northwest Greenland: 77.750/-51.100) over the last 12 days. Daily lowest temperature around 06utc/maxima around 18utc. Lowest temperature: -34°C, highest temperature -5°C. (c) Koni wx station

Satellite picture of Greenland shows the North of Greenland almost completely covered with clouds, mostly high clouds but, especially over the western parts dense lower clouds as well. Low level moisture content points at the possibility of fog patches.

12/05/10 - day 1
- Wind: SW 8-12kt, after 18/21utc slightly decreasing to 4-8kt and veering to WNW
- Weather: significant amounts of thick medium and high level clouds (Alto- and Cirrostratus) with initially some slight snow or snow showers. Later weak sunny spells.
- Temperature: Min06utc=-14c dayMax(18utc)=-10C

13/05/10 - day 2
- Wind: wind turns from WNW via N to NE with a speed of 3-8kt.
- Weather: fog patches with still Altostratus and Cirrostratus. (Weak) sunny spells.    
- Temperature: (6utc)=-22°C (18utc)=-16°C.

14/05/10 - day 3
- Wind: E 3-7kt, veering to S.
- Weather: sunny spells with fog patches. Patches of high clouds.
- Temperature: (6utc)=-18°C (18utc)=-14°C.

Carl kiting at Patriot Hills, Antarctica. (c) Marc De Keyser

Jon and Carl have been asking for wind, well the’ll get wind! A storm depression deepens between Greenland and Iceland, resulting in a strong Northerly wind over the East Coast of the Mid parts of Greenland. This storm will last for about 24-36hours and after that: calm again.

Day1-12May N66.3/W39.9
Wind: near gale! NW 28-33kt gust 40-45kt, no significant change
Wx: sunny, blowing snow
Temps: -6C later -4C

Day2-13May
Wind: NW 28-32kt average; decreasing: after 18utc 5-10kt.
Wx: sunny, blowing snow later becoming overcast. snow shower.
Temps:-12C later -8C

Day3-14May
Wind: N 5-10kt, aftr 15/18utc calm!
Wx: very cloudy, snow showers.
Temp:min-12C/max:-8C

Advice: after storm again death calm. Try to get North of 67d, there will be a little more pressure in the sails. Take care. M

Forecast fore Jon and Carl on the East coast of Greenland. They have been suffering of high temperatures and calm winds for days now. Tomorrow night things are going to change. Suddenly and dramaticly!

Day1-11May N66.2/W39.5
Wind: calm, after 18/21utc becoming NW 25-30kt!
Wx: becoming sunny.
Temps: -5C later +1C

Day2-12May
Wind: NW 30-35kt average, after15/18utc becoming 25kt
Wx: sunny, blowing snow.
Temps:-6C later -4C

Day3-13May
Wind: NW 18-23kt, aftr 15/18utc 10-15kt
Wx: sunny
Temp:min-10C/max:-6C

Advice: storm tomorrow night and 12th is confirmed. Too windy to kite but after 15utc wind could becmg into limits to kite. Do not ask too much for wind

Storm situation on the 11th of May: after 4 or 5 days suffering with no wind, well now they will get what they asked for: WIND!!! (click to enlarge)

Forecast 9 May sent by means of 4 Iridium text messages to the ‘guys on the ice’

Day1-10May N66.1/W39.1
Wind: N 6kt, later calm
Wx: sunny, after 18/21utc becoming overcast.
Temps: -6C later +1C

Day2-11May
Wind: calm, aftre 21/24utc rapidly increasing to NW 14-18kt
Wx: overcast + slight snow: after 18utc becoming sunny.
Temps:-10C later +1C

Day3-12May
Wind: NW to NNW 28-33kt gust 40-45kt, aftr 21/24utc 20-25kt
Wx: sunny, blowing snow
Temp:min-4C/max:-1C

Advice: storm on 12th is confirmed. Probably too windy but after 21/24utc wind becmg 20-25kt,continuing the next day. Marc

This is a forecast surface map valid for 12 May. After a period of slack wind a storm is expected to rapidly pop up during the night of 11th on the 12th and persist throughout the day of the 12th. At the western flank of the low pressure center between Greenland and Iceland a strong Northerly wind develops. Carl&Jon’s position is indicated with the black arrow. If this forecast is right than they will finally have some wind. Probably too much wind.

Forecast 8 May - sent to Carl and Jon via 4 Iridium phone txt messages

Day1-9May N66.1/W39.1
Wind: less than 6kt, later calm
Wx: sunny scattered clouds.
Temps: -4C later +2C

Day2-10May
Wind: less than 5kt: no significant change
Wx: sunny spells, after 18/18utc becoming overcast.
Temps:-8C later 0C

Day3-11May
Wind: Calm, after 21/24 rapidly increasing to 25-30kt (6utc next morning!).
Wx: overcast + slight snow: after 18/21utc becoming sunny.
Temp:min-6C/max:0C

Advice: daytime high temperatures continue, travel at nighthours when temperaturs are lower. The 12th the whole day 25-30kt! Marc

The next three days are ‘Anti-Greenland’ weather: hot and calm! During the day temperatures rise up to +2 degrees C, whilst it is remaining pretty calm. Maybe in the early morning Carl and Jon might have some slight wind, but this is only very shortlived. So i am afraid they wil have to pull their sledges another few days. Could be that the 11th brings on some wind. Might be a lot of wind… (c) Picture Marc De Keyser

Kite Greenland - Forecast (sent by iridium text messages)

Day1-8May N66/W39
Wind: NW 6-10kt! After 12utc becoming calm.
Wx: sunny spells, later more (high) clouds.
Temps: -2C later +2C

Day2-9May
Wind: less than 5kt: no significant change
Wx: a lot of higher cloud, later more sun.
Temps:-6C later +2C

Day3-10May
Wind: Calm, temporarily increasing to 4-8kt.
Wx: sunny becoming very cloudy
Temp:min-4C/max:0C
Remark:11th:in the evening increasing wind: up to 20kt and more.