Weekend Weather Radar Outage

 UPDATE October 20, 2017

The previously scheduled outage of the Des Moines Radar has been postponed due to the potential of severe weather on Saturday. The upgrade will be rescheduled at a later date.

================================================

Starting Saturday, October 21, 2017, the National Weather Service radar for the Des Moines office will be out of service. The outage is set to last five days.

 


This outage is planned in order to upgrade certain technological features. The National Weather Service is currently progressing through its Service Life Extension Program, or SLEP, to update radar stations across the country. During the process, obsolete technology is set to be replaced which will increase radar function. These updates will keep the radar system functional through the 2030s.

Nearby radar locations for eastern Iowa to be utilized during the outage include the Quad Cities and La Crosse, Wisconsin offices.

The radar in the Quad Cities is next in line for upgrades after the Des Moines radar.

For more information about the planned radar updates, visit the Radar Operations Center SLEP page here.

 

 

Share

Posted under NOAA

This post was written by Rachael Peart on October 18, 2017

Not this cold since May

GETTING COLD AGAIN

The high temp of 49° at Waterloo on Tuesday was the coldest high temp since May 1st when it was 49.

 

WEATHER RADAR UPGRADE

The National Weather Service radar in Des Moines is getting an upgrade/maintenance later this month.  The radar will be down from Oct 21 to about the 26, depending on how fast the technicians can do the upgrade.

 

National High and Low Temperature Wednesday, October 11, 2017

98 at Phoenix, AZ

3 at Hohnholz Ranch, CO

 

 

Share

Posted under NOAA, Precipitation Totals

This post was written by Schnack on October 11, 2017

Radar Down

Hurricane Maria passed through Puerto Rico causing significant wind and flooding damage across much of the island. Winds in excess of 100 mph destroyed the National Weather Service Radar at San Juan, Puerto Rico. The radar is expected to be down for at least a few months. Hopefully there will not be any storms in this area anytime soon. Here is a look at what the radar looks like after the hurricane.

Here is a where the radar is positioned on the island.

A closer shot of the location.

 

Here is a map to show how much rain fall on the island.

 

 

Share

Posted under NOAA, Precipitation Totals, Tropics

This post was written by Schnack on September 25, 2017

EF-1 Tornado in McGregor

NWSChat – NOAA’s National Weather Service

NWS DAMAGE SURVEY FOR 07/19/2017 TORNADO EVENT...

OVERVIEW...A strong wind producing system moved through
northeast Iowa on the afternoon of July 20, 2017. Very 
isolated tornadoes occurred in association with this
system. 

A Tornado Warning was issued for northern Clayton county
including McGregor, IA at 5:54 pm.  


Rating:                 EF-1
Estimated peak wind:    110 mph
Path length /Statute/:  5.7 miles
Path width /Maximum/:   400 yards
Fatalities:             0 
Injuries:               2 - minor

Start date:             Jul 19 2017 
Start time:             6:08 pm 
Start location:         5 miles west of McGregor, IA 

End date:               Jul 19 2017 
End time:               6:16 pm 
End location:           McGregor, IA


Share

Posted under NOAA, Severe Weather

This post was written by Schnack on July 20, 2017

Preliminary survey results from this morning: preliminary EF-2 rating for tornado path including Central City and Prairieburg. The National Weather Service survey crew will be back out tomorrow to complete the survey and report more specific findings.

 

Share

Posted under NOAA, Severe Weather

This post was written by Schnack on June 29, 2017

EF-0 Tornado in Salem

NWS Damage Survey for 05/10/17 Tornado Event

Salem Iowa Tornado

RATING:                 EF-0
ESTIMATED PEAK WIND:    60 MPH
PATH LENGTH /STATUTE/:  0.91 miles
PATH WIDTH /MAXIMUM/:   20 yards
FATALITIES:             0
INJURIES:               0

START DATE:             05/10/2017 
START TIME:             256 PM CDT
START LOCATION:         2.3 W Salem / Henry / Iowa
START LAT/LON:          40.8519 / -91.6631

END DATE:               05/10/2017
END TIME:               259 PM CDT
END LOCATION:           1.4 W Salem / Henry / Iowa
END LAT/LON:            40.8528 / -91.6458 

Tornado touched down in a field and was on the ground for 
2-3 minutes. Flying dirt was observed but no damage was 
reported. 

EF SCALE: THE ENHANCED FUJITA SCALE CLASSIFIES TORNADOES INTO THE
FOLLOWING CATEGORIES BASED ON THE DAMAGE THEY CAUSE.

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
 
Share

Posted under NOAA, Severe Weather

This post was written by Schnack on May 11, 2017

May 8, 1988 Tornadoes

On Mother’s Day in 1988 there was a tornado outbreak in eastern Iowa with almost two dozen tornadoes reported in Iowa. The map below shows the location, track and rating of each tornado.

The map below is the surface map from that morning as the cold front approached from the west.

The 500 mb map below shows the trough to the west of Iowa.

Share

Posted under NOAA, Weather History

This post was written by Schnack on May 8, 2017

May Snow

Here is a look back at the snow during the first few days of May in 2013.

https://www.weather.gov/dmx/maysnow

http://www.weather.gov/arx/may0213

 

 

Share

Posted under NOAA, Winter Weather

This post was written by Schnack on May 2, 2017

EF-0 Tornado Near Carroll Wednesday Evening

PRELIMINARY NWS DAMAGE SURVEY FOR APRIL 19TH TORNADO EVENT...

.CARROLL IOWA TORNADO...

RATING: EF-0
  ESTIMATED PEAK WIND: 70 MPH
 PATH LENGTH /STATUTE/: 0.25 MILES
 PATH WIDTH /MAXIMUM/: 50 YARDS
 FATALITIES: 0
 INJURIES: 0

START DATE: APRIL 19 2017
 START TIME: 8:04 PM CDT
 START LOCATION: 2 MILES SOUTHEAST OF CARROLL
 START LAT/LON: 42.0492

END DATE: APRIL 19 2017
 END TIME: 8:05 PM CDT
 END LOCATION: 2 MILES SOUTHEAST OF CARROLL
 END_LAT/LON: 42.0513

NWS STORM SURVEY CONFIRMED A BRIEF TORNADO TOUCHDOWN OCCURRED ABOUT 2 MILES
 SOUTHEAST OF CARROLL...WITH THE TORNADO ON THE GROUND A VERY SHORT DISTANCE.
 PRIMARY DAMAGE WAS TO A MACHINE SHED WHERE A SIGNIFICANT PORTION OF THE SHEET
 METAL ROOF WAS REMOVED. THIS IS CONSISTENT WITH WINDS AROUND 70 MPH...OR
 EF-0 DAMAGE.

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
Share

Posted under NOAA, Severe Weather

This post was written by Schnack on April 20, 2017

EF-1 Tornado in Jones County Saturday evening

 



NWS DAMAGE SURVEY FOR 04/15/17 TORNADO EVENT…

OVERVIEW…Several severe thunderstorms developed across eastern Iowa
during the evening of April 15th. While hail and heavy rainfall were primarily
produced, one storm produced a weak tornado across western Jones County.

Additional information may be added to the bottom of this statement as it
becomes available.

TORNADO…NE Anamosa/SE Langworthy Iowa…

RATING: EF-1
ESTIMATED PEAK WIND: 100 MPH
PATH LENGTH /STATUTE/: 3.22 MILES
PATH WIDTH /MAXIMUM/: 25 YARDS
FATALITIES: 0
INJURIES: 0

START DATE: 04/15/17
START TIME: 850 PM CDT
START LOCATION: 4 NE Anamosa / Jones / Iowa
START LAT/LON: 42.1417 / -91.2288

END DATE: 04/15/17
END TIME: 855 PM CDT
END LOCATION: 4 SE Langworthy / Jones / Iowa
END LAT/LON: 42.1469 / -91.1678

EF-1 TORNADO BEGAN AROUND 850 PM CDT SATURDAY EVENING…4
MILES NORTHEAST OF ANAMOSA. THE TORNADO TRACKED AROUND 3
MILES TO THE EAST BEFORE LIFTING…WITH DAMAGE TO TREES
AND OUTBUILDINGS ALONG THE PATH.

EF SCALE: THE ENHANCED FUJITA SCALE CLASSIFIES TORNADOES INTO THE
FOLLOWING CATEGORIES BASED ON THE DAMAGE THEY CAUSE.

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

Share

Posted under NOAA, Severe Weather

This post was written by Schnack on April 17, 2017