Alert archive / Iowa / Tornado Warnings in 2017

Tornado Warning 14, NWS Quad Cities, IA

March 6, 2017Clinton County, Scott County, Iowa

NWS Quad Cities, IA issued this tornado warning at Mar 6, 2017, 10:23 PM CST for Clinton County, Scott County, Iowa. It was in force for 26 min. 10 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Mar 6, 2017, 10:23 PM CST (04:23 UTC)
Expired
Mar 6, 2017, 10:49 PM CST
In force
26 min
Issued by
NWS Quad Cities, IA
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.0 in

Counties Clinton County, IA, Scott County, IA

The radar

The Quad Cities radar (KDVN), 16 km from the middle of the area, began a volume at 04:25 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Mar 6, 10:24 PM CSTTSTM WND DMG2 Nnw Walcott, IATIME ESTIMATED - SIGNIFICANT DAMAGE TO COMMERCIAL PROPERTY. SEVERAL SIGNS AND MORE THAN A DOZEN LARGE TOW- BEHIND CAMPERS DAMAGED
Mar 6, 10:26 PM CSTTSTM WND DMGMount Joy, IALARGE CONSTRUCTION TRAILOR JUST EAST OF THE OFFICE ROLLED OVER AND IN A DITCH DUE TO HIGH WINDS.
Mar 6, 10:28 PM CSTTSTM WND DMG6 Nw Davenport, IADEBRIS ACROSS I-80. POSSIBLE TORNADO.
Mar 6, 10:28 PM CSTTSTM WND GST 836 Nw Davenport, IA
Mar 6, 10:29 PM CSTTSTM WND GST 61Davenport Municipal Air, IA
Mar 6, 10:30 PM CSTTSTM WND GST 65Park View, IA
Mar 6, 10:30 PM CSTTORNADO4 Sse Grand Mound, IASPOTTER ON HWY 30 BETWEEN GRAND MOUND AND CALUMUS LOOKING SOUTHEAST.
Mar 6, 10:30 PM CSTTORNADOSw Davenport Municipal, IATHREE POWER FLASHES SEQUENTIAL IN 2 SECONDS.
Mar 6, 10:32 PM CSTTSTM WND DMGPark View, IATIME ESTIMATED - FARM BUILDINGS DAMAGED AND UTILITY POLES SNAPPED OFF NEAR SCOTT COUNTY PARK ROAD AND 240TH STREET.
Mar 6, 10:40 PM CSTTORNADO3 Ssw Low Moor, IA1040 TO 1045 PM. EF-1. ESTIMATED PEAK WINDS OF 110 MPH.PATH LENGTH OF 4.36 MILES. THE MAX WIDTH OF THE TORNADO WAS 50 YARDS. THE END LOCATION WAS 2.5 MILES SOUTHEAST OF LOW MOOR OR 41.7857 N -90.3148 W. A TORNADO TOUCHED DOWN SOUTH OF LOW MOOR, DAMAGING TREES

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Mar 6, 8:52 PM CSTTornado WatchSPC6 hr

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 4.4 hours before the alert went out and 12 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Davenport, at 00:00Z on 2017-03-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 39 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Davenport, at 00:00Z on 2017-03-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 407 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
39 J/kg
Mixed-layer CIN
-343 J/kg
Mixed-layer LCL
1016 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
407 m²/s²
0-3 km storm-relative helicity
489 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

425 
WFUS53 KDVN 070423
TORDVN
IAC045-163-070515-
/O.NEW.KDVN.TO.W.0014.170307T0423Z-170307T0515Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Quad Cities IA/IL
1023 PM CST MON MAR 6 2017

The National Weather Service in the Quad Cities has issued a

* Tornado Warning for...
  Northern Scott County in east central Iowa...
  South central Clinton County in east central Iowa...

* Until 1115 PM CST
    
* At 1023 PM CST, a severe thunderstorm capable of producing a
  tornado was located near Walcott, or 8 miles northwest of
  Davenport, moving northeast at 45 mph.

  HAZARD...Tornado and quarter size hail. 

  SOURCE...Radar indicated rotation. 

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely. 

* This dangerous storm will be near...
  Eldridge and Long Grove around 1035 PM CST. 
  Princeton and McCausland around 1045 PM CST. 
  Cordova around 1050 PM CST. 
  Low Moor around 1055 PM CST. 

Other locations impacted by this tornadic thunderstorm include
Malone, Rock Creek Marina and Campground, Maysville, Davenport
Municipal Airport, Folletts, Park View, Rock Creek  Park, Scott
County Park, Princeton Wildlife Area and Plainview.

This includes the following highways...
 Interstate 80 in Iowa between mile markers 283 and 295.
 Interstate 280 between mile markers 1 and 2.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 4188 9041 4175 9030 4173 9032 4169 9031
      4168 9033 4164 9034 4156 9074 4167 9087
TIME...MOT...LOC 0423Z 242DEG 41KT 4163 9073 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

MCCLURE
2 follow-up statements
442 
WWUS53 KDVN 070435
SVSDVN

Severe Weather Statement
National Weather Service Quad Cities IA/IL
1035 PM CST MON MAR 6 2017

IAC045-163-070515-
/O.CON.KDVN.TO.W.0014.000000T0000Z-170307T0515Z/
Scott IA-Clinton IA-
1035 PM CST MON MAR 6 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1115 PM CST FOR
NORTHEASTERN SCOTT AND SOUTH CENTRAL CLINTON COUNTIES...
    
At 1035 PM CST, a severe thunderstorm capable of producing a tornado
was located over Eldridge, or 7 miles northwest of Bettendorf, moving
northeast at 40 mph.

HAZARD...Tornado and quarter size hail. 

SOURCE...Radar indicated rotation. 

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely. 

This dangerous storm will be near...
  McCausland around 1045 PM CST. 
  Princeton around 1050 PM CST. 
  Cordova and Low Moor around 1055 PM CST. 

Other locations impacted by this tornadic thunderstorm include
Malone, Rock Creek Marina and Campground, Davenport Municipal
Airport, Folletts, Park View, Rock Creek  Park, Scott County Park and
Princeton Wildlife Area.

This includes Interstate 80 in Iowa near mile marker 295.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 4188 9041 4175 9030 4173 9032 4169 9031
      4168 9033 4164 9034 4159 9059 4176 9067
TIME...MOT...LOC 0435Z 243DEG 33KT 4166 9054 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

MCCLURE
276 
WWUS53 KDVN 070449
SVSDVN

Severe Weather Statement
National Weather Service Quad Cities IA/IL
1049 PM CST MON MAR 6 2017

IAC045-163-070458-
/O.CAN.KDVN.TO.W.0014.000000T0000Z-170307T0515Z/
Scott IA-Clinton IA-
1049 PM CST MON MAR 6 2017

...THE TORNADO WARNING FOR NORTHEASTERN SCOTT AND SOUTH CENTRAL
CLINTON COUNTIES IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has weakened. 
Therefore the warning has been cancelled.

A tornado watch remains in effect until 400 AM CST for northwestern
Illinois...and east central Iowa.

LAT...LON 4188 9041 4175 9030 4173 9032 4169 9031
      4168 9033 4164 9034 4159 9059 4176 9067
TIME...MOT...LOC 0447Z 242DEG 41KT 4173 9035 

$$

MCCLURE

The office that day

Everything else NWS Quad Cities, IA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 6, 8:02 PM CSTSevere Thunderstorm WarningDVNBenton, Buchanan, Iowa58 min
Mar 6, 8:04 PM CSTSevere Thunderstorm WarningDVNKeokuk56 min
Mar 6, 8:29 PM CSTSevere Thunderstorm WarningDVNDelaware, Johnson, Linn61 min
Mar 6, 8:40 PM CSTTornado WarningDVNBuchanan, Delaware38 min
Mar 6, 8:46 PM CSTSevere Thunderstorm WarningDVNKeokuk, Washington74 min
Mar 6, 8:46 PM CSTTornado WarningDVNBenton, Iowa, Johnson, Linn22 min
Mar 6, 8:54 PM CSTSevere Thunderstorm WarningDVNJefferson, Van Buren81 min
Mar 6, 9:05 PM CSTSevere Thunderstorm WarningDVNCedar, Jones55 min
Mar 6, 9:07 PM CSTTornado WarningDVNJones, Linn26 min
Mar 6, 9:19 PM CSTSevere Thunderstorm WarningDVNDubuque56 min
Mar 6, 9:28 PM CSTSevere Thunderstorm WarningDVNJohnson47 min
Mar 6, 9:31 PM CSTSevere Thunderstorm WarningDVNDes Moines, Henry, Lee, Louisa, Muscatine74 min
Mar 6, 9:31 PM CSTTornado WarningDVNDubuque, Jackson, Jones44 min
Mar 6, 9:42 PM CSTSevere Thunderstorm WarningDVNJackson63 min
Mar 6, 9:49 PM CSTSevere Thunderstorm WarningDVNClinton71 min
Mar 6, 9:52 PM CSTSevere Thunderstorm WarningDVNClinton, Scott83 min
Mar 6, 9:55 PM CSTTornado WarningDVNJackson38 min
Mar 6, 10:04 PM CSTSevere Thunderstorm WarningDVNCedar44 min
Mar 6, 10:10 PM CSTTornado WarningDVNMuscatine, Scott24 min
Mar 6, 10:17 PM CSTTornado WarningDVNCedar, Clinton, Scott31 min
Mar 6, 10:26 PM CSTSevere Thunderstorm WarningDVNClinton, Scott49 min
Mar 6, 10:46 PM CSTTornado WarningDVNClinton, Jackson20 min
Mar 7, 3:32 AM CSTRed Flag WarningDVNBenton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 15 more14 hr
Mar 7, 3:37 AM CSTWind AdvisoryDVNBenton, Buchanan, Delaware, Dubuque, Jackson, Jones and 1 more12 hr

Nearby

Tornado Warnings in Iowa, 2017Every tornado warning in 2017Tornadoes in 2017

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.