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Week of 22 Nov 2009
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| Mon Nov 16, 2009 | |
 | Near none to four inches
16 Nov 2009 06:06 AM The featured map is the five day precipitation forecast from the Hydrometeorological Prediction Center. The forecast has Iowa in a range of near nothing in Northwest Iowa to around four inches in far Southeast. This is all thanks to a very slow moving storm system that will stay just to our south and east. Some snowfall is expected out of this storm system as temperatures will hover very close to freezing. Voting: Good - 23 Bad - 3 |
| Tue Nov 17, 2009 | |
 | Fighting the dry air
17 Nov 2009 06:08 AM The storm system to our south continues to slowly churn away and push moisture north into Iowa. The northward advancement of the precipitation has been impeded by a large amount of dry air being pushed into the state on northeasterly winds. The featured map is a combination of wind barbs, relative humidity, and NEXRAD from Monday evening. Notice the blotchy nature of the precipitation shield over unsaturated air and how the NEXRAD presentation changes as the relative humidity approaches 100%. Voting: Good - 19 Bad - 3 |
| Wed Nov 18, 2009 | |
 Ties in high temperature were not included. | Warmer High Temperature
18 Nov 2009 05:10 AM Thanks to a slow moving storm system to our south, places like Lamoni (in Southern Iowa) experienced a cloudy and rainy day while locations farther north like Mason City saw the sun and warmer temperatures. The high temperature in Mason City was 9 degrees warmer than Lamoni. The featured chart looks at the frequency of Mason City having a warmer high temperature than Lamoni (north/south comparison) and also Dubuque having a warmer high than Sioux City (east/west comparison). In November, Mason City is warmer than Lamoni about 10% of the time (think of it as 3 days for the month). The chart shows an interesting annual signal and a probable change in the dominate spatial temperature structure between the summer and wintertime. Voting: Good - 18 Bad - 9 Tags: highs |
| Thu Nov 19, 2009 | |
 | Ingesting dry air
19 Nov 2009 06:08 AM The featured map is water vapor channel satellite imagery from Wednesday evening showing the impressive size of the slow moving storm system that has brought pesky showers to the southeast half of Iowa. Areas in orange and red indicate dry air aloft and you can see the storm system is now ingesting these pockets of dry air from both the east and west. This dry air has cut down on the amount of rainfall being produced and our system will finally pull away from the state today. Voting: Good - 37 Bad - 5 Tags: satellite |
| Fri Nov 20, 2009 | |
 click image for full year view | Sunny at noon?
20 Nov 2009 06:08 AM It seems like we have been stuck with cloudy days for a while now. The featured image attempts to illustrate this by taking a sample of the Ames webcamera imagery at noon each day since the first of August. Clear skies stick out nicely as compared with dreary gray images. The forecast has some hope for seeing some sun this weekend with mild temperataures in the 50s. Voting: Good - 47 Bad - 18 Tags: webcam |
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