Posted under Precipitation Totals
This post was written by Schnack
The National Weather Service has issued an excessive heat watch for most of the area. Heat indices (the combination of the air temperature and the dew point) are expected to exceed 100°, and could be as high as 110°. The watch begins for some western counties on Wednesday and the rest of the area on Thursday. The entire watch will end on Saturday.
Actual air temperatures will top out in the mid 90s, which isn’t too far off from what we’ve seen in the past couple of years. However, the National Weather Service hasn’t issued an excessive heat watch since July 2011.
Though it will feel like 100+° during the afternoon on Thursday, Friday and Saturday, air temperatures have not been that warm since 2013. The chart below shows the last time the temperature was 100° or warmer:
Cooler air (with highs in the 80s) is expected to track in on Sunday.
This post was written by Rachael Peart
An excessive heat watch goes into effect on Thursday and extends into Saturday. The heat index could be as high as 110°.
Heat can kill. If you look at the 30 year averages when it comes to weather related fatalities…heat is #1 by a lot.
Thursday and Friday will the hottest two days in this heat wave. There will be some relief from the heat by Sunday.
Posted under Heat
NWS Damage Survey Information for July 17, 2016 Tornadoes Tornado #1 Andrew, IA Rating: EF-1 Estimated peak wind: 100 mph Path length /Statute/: 1.0 mile Path width /Maximum/: 50 yards Fatalities: 0 Injuries: 0 Start date: July 17, 2016 Start time: 603 AM CDT Start location: 0.6 SW of Andrew / Jackson / IA Start Lat/Lon: 42.1471 / -90.6023 End date: July 17, 2016 End time: 605 AM CDT End location: 0.4 E of Andrew / Jackson / IA End_lat/lon: 42.1541 / -90.5853 Tornado crossed the southern parts of the town of Andrew. A building at the ag coop was destroyed and numerous trees were snapped. Tornado #2 Park View, IA Rating: EF-0 Estimated peak wind: 80 mph Path length /Statute/: 1.0 mile Path width /Maximum/: 10 yards Fatalities: 0 Injuries: 0 Start date: July 17, 2016 Start time: 625 AM CDT Start location: 1.7 SSW Parkview / Scott / IA Start Lat/Lon: 41.6739 / -90.5489 End date: July 17, 2016 End time: 626 AM CDT End location: 2.0 SSE Parkview / Scott / IA End_lat/lon: 41.6700 / -90.5295 Limbs were snapped from a tree and corn crops were damaged. Tornado #3 Vinton, IA Rating: EF-2 Estimated peak wind: 135 mph Path length /Statute/: 1.62 mile Path width /Maximum/: 100 yards Fatalities: 0 Injuries: 5 Start date: July 17, 2016 Start time: 501 AM CDT Start location: South side of Vinton / Benton / IA Start Lat/Lon: 42.1531 / -92.0327 End date: July 17, 2016 End time: 503 AM CDT End location: Southeast side Vinton / Benton / IA End_lat/lon: 42.1587 / -92.0025 Tornado tracked across the southern parts of Vinton, damaging buildings, trees, power poles, and other structures. The tornado first damaged trees, then hit the ball field where it destroyed fencing, the score board and a large light pole. It then tracked across several multi-family housing buildings, where it mainly removed the roof structures. From there the tornado intensifed as it struck a brick apartment building, when was unroofed and had parts of the walls blown out. The tornado then felled a cell phone tower and apparently began to weaken as it continued across a large field. The roofs of another eight homes were damaged as the tornado finally exited Vinton and continued into farmland where it dissipated. TORNADO # 4 Walford, IA Rating: EF-2 Estimated peak wind: 115 MPH Path length /Statute/: 4 miles Path width /Maximum/: 75 yards Fatalities: 0 Injuries: 4 Start date: July 17, 2016 Start time: 515 AM CDT Start location: 1.5 miles SE Norway Start Lat/Lon: 40.8912/-91.8966 End date: July 17, 2016 End time: 5:21 AM CDT End location: 0.7 miles SE Walford End_lat/lon: 41.8767/-91.8215 A tornado touched down southeast of Norway and tracked southeast to Walford. It damaged two farmsteads before reaching Walford. In Walford, it damaged the roofs of several homes. One home was completely destroyed when it collapsed on itself, apparently aided by wind-blown debris. EF Scale: The Enhanced Fujita Scale Classifies Tornadoes into the following categories. EF0...Weak......65 to 85 mph EF1...Weak......86 to 110 mph EF2...Strong....111 to 135 mph EF3...Strong....136 to 165 mph EF4...Violent...166 To 200 mph EF5...Violent...>200 mph
Posted under Severe Weather
Eastern Iowa saw a very active period of weather during the overnight hours Saturday into Sunday morning. At least 21 reports of damage were reported to the National Weather Service.
Just outside our viewing area in Hardin County, an 88 mph wind gust was reported in Steamboat Rock just after 4 O’Clock in the morning.
Here are a few satellite and radar images as the storms tracked through eastern Iowa.
The bowing segment is indicative of some very strong winds, and that was realized in many areas as the storm tracked through.
As of Sunday night, two tornadoes were confirmed in extreme eastern Iowa; Jackson County and Scott County early Sunday morning. (Click the link for details on the two tornadoes).
Two areas in the KWWL viewing area that were especially hard hit are Vinton and Walford. The National Weather Service in the Quad Cities will be sending out a team to survey those areas in Benton and Linn counties to determine whether the damage was caused by straight-line winds or a tornado. Expect that report out sometime on Monday.
Several photos came in from KWWL viewers. Here is a slideshow of some of those photos.
It is July after all and the weather typically is hot. Well today was not that way. Even with no rain high temperatures were only in the 70s. Usually to have highs held down in the 70s in July it would have rained for some of the afternoon.
This time next week the weather will be much different. The hottest air of the season is on the way next week. High temperatures will be near or into the 90s starting Wednesday and remain there into the weekend of July 23-24.
Normal high temperatures this time of year are in the mid 80s. Above normal temperatures are likely from Wednesday through almost the end of July. That means there might be a lot of days near 90° or above in our future.
This is the time of year when high temperatures reach 90°. Here is a look at the last ten years at Waterloo showing how many days during each month the high temperature was 90° or warmer. Not too many in the last couple of years. In 2012, there were a lot of days with temperatures of 90° or warmer.
Posted under Heat
Here are the latest rainfall totals across eastern Iowa.
|Clarksville 0.2 NW||0.35|
|Center Junction 2.6 W||0.12|
|Gilbertville 1.0 NW||0.01|
|Swisher 0.4 NNE||0.05|
|Cedar Falls 1.4 SSE||Trace|
|Waucoma 3.2 S||0.04|
|Cedar Rapids 3.4 NW||Trace|
|Marengo 2.6 SSW||0.07|
|Coralville 1.8 NW||0.31|
|Kalona 7.3 NNW||0.96|
|Eldora 1.2 ENE||0.03|
|Ainsworth 7.4 N||1.06|
|Marion 1.2 NE||0.01|
|Waterloo 1.8 SSE||Trace|
|Bellevue 0.3 SSW||0.07|
|Hopkinton 5.4 WSW||0.03|
|Marion 1.7 NNW||0.01|
|Central City 6.7 W||0.01|
|Quasqueton 1.8 S||Trace|
|Ely 0.5 SE||0.05|
|Parnell 0.1 SSW||1.85|
|Maquoketa 4 W||0.07|
|Williamsburg 3 SE||0.68|
|Stanley 4 W||Trace|
|Manchester No. 3||Trace|
|Cresco 1 NE||Trace|
|Kesley 3 NNE||0.06|
|Anamosa 3 SSW||0.08|
|Volga 1 NE||0.01|
Posted under Precipitation Totals
The latest U.S. Drought Monitor was released Thursday morning, and parts of Iowa are experiencing an Abnormally Dry to Moderate Drought. Most of the KWWL viewing area, especially across the north, have had plenty of rainfall in recent weeks.
This taken into account the precipitation that feel between July 5th and July 12th. Fortunately, some of those areas in southern Iowa have received at least a little bit of rain from the storms that tracked through Wednesday afternoon.
Next week, a ridge builds across the center of the country, and that brings in hot weather. Several days are expected in the 90s, and aside from a chance for rain Saturday night and Sunday, we are looking at a mainly dry weather patter.
A few strong/severe storms moved across our southern Iowa, (south of I-80) Thursday afternoon. Heavy rain and strong winds caused some tree damage. Here are some of the reports…so far. I will update this link as the reports come in.
South English: power was knocked out
Sigourney: 3 trees down
Washington: 62 mph wind gust with trees down
Iowa City: 50 mph wind gust
Posted under Severe Weather