Tuesday, April 03, 2007
Winter like Highs & Lows Return
Over the next several days a blocking pattern will develop with a Low over the Pacific, a ridge of High pressure just to our west, and an impressive Low over Hudson’s bay in Canada. This set-up as we’ve discussed on the weather blog before is known as an Omega Block; typically weather becomes somewhat stagnant within this feature and depending on position within, the same type of conditions can persist for days. With that being said, the Jet stream will be parked in place just to our west, keeping us in a cool northwesterly flow regime. Another boundary looks to pass through on Thursday, ushering in even colder air aloft. So, a period of seasonably cool weather is looking imminent.
So, just how cold might we get? Climatological averages for this week are around 71/45 High/Low in Fort Smith and 65/43 in Fayetteville. Over the next several days Fort Smith will be averaging highs in the mid and upper 50s with lows in the mid and lower 30s. Fayetteville’s highs may not break 50 for a few days and lows will likely be dipping below the freezing mark. These numbers are more indicative of early and mid February! Sensitive plants may need to be brought indoors for a few nights.
FYI: Frosts are possible in the River Valley through mid-April and in Fayetteville through mid-May.
So, just how cold might we get? Climatological averages for this week are around 71/45 High/Low in Fort Smith and 65/43 in Fayetteville. Over the next several days Fort Smith will be averaging highs in the mid and upper 50s with lows in the mid and lower 30s. Fayetteville’s highs may not break 50 for a few days and lows will likely be dipping below the freezing mark. These numbers are more indicative of early and mid February! Sensitive plants may need to be brought indoors for a few nights.
FYI: Frosts are possible in the River Valley through mid-April and in Fayetteville through mid-May.
Posted by Ted Zarras at 4:19 PM
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