Posts Tagged ‘damaging winds’

Severe Storm Threat Today; Snow By The Weekend?

UPDATED POST:  Monday, March 6, 2017, 4:15 p.m.

After another balmy day with highs near 70° in the Quad Cities, conditions are favorable for severe storms tonight with damaging winds being the biggest threat.  We could also see large hail and a few tornadoes.

A “Tornado Watch” remains in effect through 10 p.m. for much of Iowa.  This includes our western counties of Jefferson, Johnson, and Washington.

TW4.jpg

The line of strong to severe storms is firing up over western and central Iowa this afternoon.  This radar image is from around 4 p.m.

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This line of storms will race across Iowa and should be in eastern Iowa by 8-10 p.m. and east of the Mississippi around midnight.

I’ll continue monitoring the situation and let you know if the “Tornado Watch” is expanded eastward to include more of our counties and the Quad Cities.

If severe storms are not your thing, it’s looking more and more likely that we could be in for a decent accumulating snow starting Friday night into Saturday.

This is the latest GFS forecast map for noon Saturday!

Sat Noon.jpg

I’ll have more on that tomorrow and the rest of the week.

Let’s get through tonight first.

Anthony

ORIGINAL POST:  Monday, March 6, 2017, 5:37 a.m.

Very warm temperatures are in the forecast again today with highs approaching 70°.

That’s the good news.

The bad news is that we could be seeing a repeat of last Tuesday’s weather with severe storms later today.

monday-severe-threat

Like last week, the biggest threat from the severe storms later this afternoon and early tonight will be damaging winds of 60 miles-per-hour or higher, large hail, and even a few tornadoes.

A line of storms will be forming across central Iowa this afternoon and will be moving into eastern Iowa by evening.

That line of storms will be crossing the Mississippi River by about 10 p.m.

severe-storms-later-monday

The threat of severe weather should exit our eastern hometowns by midnight.

Temperatures will remain mild through Thursday in the 50s.

However, winter may return later Friday into Saturday.

It’s possible that we could be seeing an accumulating snow to kick off the weekend.

Snow Saturday Morning

There’s plenty of time to fine tune the forecast for the snow this upcoming weekend.

But, the big story today is the severe weather threat later this afternoon and early tonight.

Anthony

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Spring Yesterday & Now Back To Winter

After the record warm day Tuesday with a high of 69° in the Quad Cities, a strong cold front brought strong to severe thunderstorms to the Mississippi and Illinois Valleys.

At least 24 tornadoes were reported to the Storm Prediction Center Tuesday afternoon and Tuesday evening.

local-severe-weather

One of those was in Clinton County, Iowa, just north of the Quad Cities, near Low Moor.

Several tornadoes were reported in La Salle County, Illinois, about an hour or so east of the Quad Cities.  At least one person was killed and one injured near Ottawa, Illinois.

regional-severe

Near Kewanee and Galva, Illinois, in Henry County, there were several reports of large damaging hail.  Some of the hail was larger than golf balls.

The weather today, tomorrow, and Friday will be colder with highs closer to average for early March around the low-40s.

We could see a light wintry mix of rain and snow later today, but a more potent clipper moves through tomorrow afternoon and tomorrow night.

This could bring 1-2″ of snow to the north later Thursday and around a dusting to around one-half of an inch in the Quad Cities.

Warmer temperatures are on the way for the weekend.

Anthony

Record Warmth, Then Severe Storms

UPDATED POST:  Tuesday, February 28, 2017, 11:13 a.m.

It’s now looking like that there’ll be a widespread severe weather outbreak across Illinois this afternoon and evening.

Here’s the updated categorical risk from the Storm Prediction Center.

Updated Moderate.gif

That large area of “moderate” risk in downstate Illinois is rather ominous since it wasn’t on the earlier update at 7:37 a.m.

For the Quad Cities and our part of Iowa and Illinois, we’re still under the “slight” to “enhanced” chances of severe weather this afternoon and evening.

Our biggest threat will be wind damage, followed by large hail.

But, there’s still a chance of a few strong tornadoes in our area.

As of this update, there are no watches in effect.

I’ll keep you updated as needed today.

Anthony

ORIGINAL POST:  Tuesday, February 28, 2017, 5:05 a.m. (Map updated at 7:37 a.m.)

A storm system will bring us record or near record warmth today and then our first real severe weather threat this evening and early tonight.

severe-update

A warm front associated with that storm moved through eastern Iowa and the Quad Cities earlier Tuesday morning with non-severe storms.

High temperatures today will warm into the 60s to near 70°.  The record high in the Quad Cities today is 66°.  That was set just last year.

Interestingly enough, our record low for today was set two years ago at -18°.  What a difference a year makes!

With unseasonably warm temperatures in place this afternoon, strong to severe thunderstorms will be breaking out across Iowa and Illinois as the cold front arrives.

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These storms could bring large hail, damaging winds, and even a few tornadoes, especially east of the Mississippi River.  This threat will last through the evening hours.

Tomorrow, as colder air comes in, the rain showers could mix with or change over to light snow.

Anthony

Stormy Night & Possible Tornadoes

A much quieter and cooler weekend is on the way for Iowa and Illinois after an evening of stormy weather Thursday.

Fast-moving storms prompted several “Tornado Warnings” for the Quad Cities and some nearby counties.

tornado-warnings

On Friday, meteorologists from the Quad Cities National Weather Service office will be surveying damage to determine how many tornadoes touched down and how much of the damage was caused just by strong winds.

The first “Tornado Warning” was issued at 10:15 p.m. Thursday for Muscatine and Scott counties in Iowa.

muscatine-tornado

A trained weather spotter reported a possible tornado at 10:19 p.m. near Highway F70 and U.S. Highway 61 on the east side of Muscatine, Iowa.

Another “Tornado Warning” was issued at 10:33 p.m. for Scott County, Iowa, and Rock Island County, Illinois, until 11 p.m.

A trained weather spotter reported a tornado on the ground near Stockton, Iowa, in Scott County, for about 12-15 minutes.

stockton-tornado

Two more tornado warnings were issued that included Henry and Whiteside counties in Illinois.

There were many reports of limbs down and trees snapped off across Muscatine and Scott counties.  Davenport and Bettendorf were two of the hardest hit areas.

At around midnight, MidAmerican Energy reported about 21-thousand customers across the Iowa and Illinois Quad Cities without power.

Most of those were in the big cities:  Davenport (10,818 customers), Bettendorf (4,942 customers), Rock Island (3,089 customers), and Moline (1,901 customers).

By 1:35 a.m., crews had restored power to many and the outage number was down to 12,556.

Once the front passes through early Friday morning, the sun will return for the weekend.

Highs will be in low-to-mid-60s Friday and closer to 70° for the weekend.  Overnight lows will be near 40° Saturday morning and in the 40s Sunday morning.

Anthony

Severe Weather Threat Increases Sunday

It finally feels like spring across the Mississippi and Illinois Valleys.

After hitting 90° Tuesday in the Quad Cities, we reached 82° yesterday, and highs of 80° or better are expected through Monday of next week.

And, while we’ve had plenty of rain, 13.05″ since March 1, 2013, which is 8.45″ above average, we really haven’t seen much in the way of severe weather.

However, that could be changing.  Showers and thunderstorms are possible tonight and Friday, but by Sunday night and Monday, Iowa and Illinois could be seeing some strong to severe thunderstorms.

7am Sunday - 7am Monday

The map with the red shading is for 7 a.m. Sunday through 7 a.m. Monday.

7am Monday - 7am Tuesday

And, this map with the purple shading is for 7 a.m. Monday through 7 a.m. Tuesday.

Each colored shading indicates where there is, at least, a 30% chance of seeing either damaging winds, large hail, or tornadoes.

Of course, the fantastic CBS4 weather team will keep you updated with the very latest on this severe weather threat.

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By the way, Iowa just set the record for the longest period, 356 consecutive days, without a tornado.  The last tornado touched down on May 24, 2012, in Fayette County, in the northeastern part of the state, near the Wisconsin and Minnesota borders.

Anthony

70s, Storms, Flooding, & Flurries — Oh My!

In just the past five days, the Quad Cities hit 78° Tuesday, picked up 1-4″ of rain Monday through Thursday, and a few snow flakes fell Saturday morning.  Like the old saying goes in the Midwest, “if you don’t like the weather, wait fifteen (or five) minutes and it’ll change”.  That is so true and that’ll be the case over the next week, too.

Today will be blustery and cool with a sun and cloud mix.  Showers and isolated thunderstorms arrive late tonight as a warm front passes.  This will bring windy and warmer conditions Sunday as highs top 70°!

As a strong cold front barrels through the area Sunday evening, there is the potential for large hail and damaging winds of over 50 miles-per-hour for a few hours late afternoon and early evening.  This is the map for Sunday night, 10 p.m.

SUNDAY 10PM

That dark blue represent the thunderstorms and the potential for heavy rain.  Once that front moves through Sunday night, it’ll stall just south of the Quad Cities keeping shower and thunderstorm chances in the forecast all the way into Thursday.

Rivers are already on the rise from the rains last week.  Here is the rainfall total at my house, in Moline, from last week.  I just love my new self-emptying, electronic rain gauge that I got for Christmas!

Rain Last Week

Look at the rainfall projections from NOAA’s Weather Prediction Center.

Rain Projection Saturday AM through Thursday AM

I definitely think we could pick up another 1-4″ of rain this week!

Here’s a stark comparison:  So far, in 2013, we’ve picked up 10.34″ of rain and melted snow.  By this time last year, we were just at 4.30″ and we ended up having a major drought in 2012.  By the way, average is 7.3″.  So, this year, we’re three inches above average and last year we were three inches below average!

And, I’m already being asked if there will be any snow in the colder air Thursday night.  For us, in the Quad Cities, we could see some flurries or light snow.  But, the winter storm will likely stay well to our northwest!!!

This is the forecast map for Thursday evening.  That dark blue line through the Quad cities is the cold air (below freezing) aloft and the green represents the remaining moisture as the storm moves off.  So, yes, there could be some flurries or light snow briefly Thursday night or Friday, but I’m not getting excited about it happening five days out and neither should you.

THURSDAY 7PM

Have a good rest of the weekend.  And, find those waders!

Anthony