Alert archive / Iowa / Tornado Warnings in 2017

Tornado Warning 1, NWS Quad Cities, IA

February 28, 2017Clinton County, Scott County, Iowa; Rock Island County, Illinois

NWS Quad Cities, IA issued this tornado warning at Feb 28, 2017, 3:28 PM CST for Clinton County, Scott County, Iowa; Rock Island County, Illinois. It was in force for 47 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: Feb 28, 2017, 3:28 PM CST (21:28 UTC)
Expired: Feb 28, 2017, 4:15 PM CST
In force: 47 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, Rock Island County, IL

The radar

The Quad Cities radar (KDVN), 25 km from the middle of the area, began a volume at 21:32 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

Time	Report	Where	Remark
Feb 28, 3:55 PM CST	HAIL 1	Camanche, IA	DIME TO QUARTER
Feb 28, 3:55 PM CST	TORNADO	3 S Low Moor, IA	EMERGENCY MANAGER OBSERVED A BRIEF TORNADO IN A FARM FIELD JUST NORTH OF FOLLETTS WITH 5 TO 10 SECONDS OF SWIRLING DIRT AT THE SURFACE. NO DAMAGE. TIME ESTIMATED.
Feb 28, 3:59 PM CST	HAIL 0.5	1 Wnw Long Grove, IA
Feb 28, 4:00 PM CST	HAIL 0.25	1 S Low Moor, IA
Feb 28, 4:01 PM CST	HAIL 1	1 E Long Grove, IA	ONE INCH HAIL WITH SOME NICKEL SIZED HAIL. TIME ESTIMATED FROM RADAR.
Feb 28, 4:04 PM CST	HAIL 0.25	Clinton, IA	PEA SIZED HAIL JUST STARTED.
Feb 28, 4:10 PM CST	HAIL 0.88	Mccausland, IA	DELAYED REPORT. PEA TO NICKEL SIZED HAIL. FROM FACEBOOK.
Feb 28, 4:13 PM CST	HAIL 0.75	4 Ssw Clinton, IA	HAIL TO THE SIZE OF DIMES.
Feb 28, 4:18 PM CST	HAIL 1	4 Ssw Clinton, IA	DELAYED REPORT. A MIXTURE OF PEA...NICKEL...AND QUARTER SIZED HAIL.
Feb 28, 4:18 PM CST	HAIL 1	4 Ssw Clinton, IA	DELAYED REPORT. A MIXTURE OF PEA...NICKEL...AND QUARTER SIZED HAIL. HAIL OCCURRED 418-421 PM CST.

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.

Issued	Product	Office	Lasted
Feb 28, 2:57 PM CST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 9.5 hours before the alert went out and 18 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 30 J/kg
Mixed-layer CIN: -241 J/kg
Mixed-layer LCL: 771 m above ground
0-6 km bulk shear: 80 kt
0-1 km storm-relative helicity: 223 m²/s²
0-3 km storm-relative helicity: 294 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted.

974 
WFUS53 KDVN 282128
TORDVN
ILC161-IAC045-163-282215-
/O.NEW.KDVN.TO.W.0001.170228T2128Z-170228T2215Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Quad Cities IA/IL
328 PM CST TUE FEB 28 2017

The National Weather Service in the Quad Cities has issued a

* Tornado Warning for...
  Northeastern Rock Island County in northwestern Illinois...
  Northern Scott County in east central Iowa...
  Southeastern Clinton County in east central Iowa...

* Until 415 PM CST
    
* At 328 PM CST, a severe thunderstorm capable of producing a tornado
  was located near Donahue, or 9 miles northeast of Durant, moving
  east at 35 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 around 340 PM CST. 
  Long Grove around 345 PM CST. 
  McCausland around 355 PM CST. 
  Princeton around 400 PM CST. 
  Camanche, Cordova and Low Moor around 405 PM CST. 
  Albany around 415 PM CST. 

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

This includes Interstate 88 between mile markers 12 and 13.
 
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.

To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
the Quad Cities.

&&

LAT...LON 4164 9081 4170 9082 4189 9022 4180 9019
      4178 9024 4176 9025 4176 9024 4175 9025
      4174 9024 4172 9023 4170 9024 4169 9023
      4168 9023 4166 9018 4164 9016 4164 9017
      4163 9016
TIME...MOT...LOC 2128Z 256DEG 32KT 4167 9075 

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

$$

Gibbs

3 follow-up statements

331 
WWUS53 KDVN 282139
SVSDVN

Severe Weather Statement
National Weather Service Quad Cities IA/IL
339 PM CST TUE FEB 28 2017

ILC161-IAC045-163-282215-
/O.CON.KDVN.TO.W.0001.000000T0000Z-170228T2215Z/
Rock Island IL-Scott IA-Clinton IA-
339 PM CST TUE FEB 28 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 415 PM CST FOR
NORTHEASTERN ROCK ISLAND...NORTHEASTERN SCOTT AND SOUTHEASTERN
CLINTON COUNTIES...
    
At 339 PM CST, a severe thunderstorm capable of producing a tornado
was located over Long Grove, or 11 miles north of Davenport, moving
east 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 350 PM CST. 
  Princeton and Low Moor around 355 PM CST. 
  Camanche and Cordova around 400 PM CST. 
  Albany around 405 PM CST. 

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

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.

If a tornado or other severe weather is spotted, report it to the
National Weather Service or your local nearest law enforcement agency
who will send your report. This act may save lives of others in the
path of dangerous weather.

&&

LAT...LON 4169 9065 4174 9068 4189 9022 4180 9019
      4178 9024 4176 9025 4176 9024 4175 9025
      4174 9024 4172 9023 4170 9024 4169 9023
      4168 9023
TIME...MOT...LOC 2139Z 268DEG 36KT 4173 9057 

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

$$

Gibbs

496 
WWUS53 KDVN 282148
SVSDVN

Severe Weather Statement
National Weather Service Quad Cities IA/IL
348 PM CST TUE FEB 28 2017

ILC161-IAC045-163-282215-
/O.CON.KDVN.TO.W.0001.000000T0000Z-170228T2215Z/
Rock Island IL-Scott IA-Clinton IA-
348 PM CST TUE FEB 28 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 415 PM CST FOR
NORTHEASTERN ROCK ISLAND...NORTHEASTERN SCOTT AND SOUTHEASTERN
CLINTON COUNTIES...
    
At 348 PM CST, a severe thunderstorm capable of producing a tornado
was located over McCausland, or 12 miles north of Bettendorf, moving
east at 20 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...
  Camanche and Low Moor around 405 PM CST. 
  Albany around 415 PM CST. 

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

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.

If a tornado or other severe weather is spotted, report it to the
National Weather Service or your local nearest law enforcement agency
who will send your report. This act may save lives of others in the
path of dangerous weather.

&&

LAT...LON 4172 9052 4179 9054 4189 9022 4180 9019
      4178 9024 4176 9025 4176 9024 4175 9025
      4174 9024 4172 9023 4170 9024 4169 9023
      4168 9023
TIME...MOT...LOC 2148Z 272DEG 18KT 4174 9044 

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

$$

Gibbs

816 
WWUS53 KDVN 282212
SVSDVN

Severe Weather Statement
National Weather Service Quad Cities IA/IL
412 PM CST TUE FEB 28 2017

IAC045-163-ILC161-282221-
/O.EXP.KDVN.TO.W.0001.000000T0000Z-170228T2215Z/
Rock Island IL-Scott IA-Clinton IA-
412 PM CST TUE FEB 28 2017

...THE TORNADO WARNING FOR NORTHEASTERN ROCK ISLAND...NORTHEASTERN
SCOTT AND SOUTHEASTERN CLINTON COUNTIES WILL EXPIRE AT 415 PM CST...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning will be allowed to expire.  However small hail
and gusty winds are still possible with this thunderstorm.

A tornado watch remains in effect until 1000 PM CST for northwestern
Illinois...and east central Iowa.

Remember, a Severe Thunderstorm Warning still remains in effect for
Scott County until 5:00 PM CST.

LAT...LON 4172 9052 4179 9054 4189 9022 4180 9019
      4178 9024 4176 9025 4176 9024 4175 9025
      4174 9024 4172 9023 4170 9024 4169 9023
      4168 9023
TIME...MOT...LOC 2211Z 256DEG 32KT 4178 9020 

$$

Gibbs

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 28, 2:54 AM CST	Special Weather Statement	DVN	Louisa	51 min
Feb 28, 10:16 AM CST	River Flood Warning	DVN	Clinton, Scott	6 days
Feb 28, 10:39 AM CST	River Flood Warning	DVN	Muscatine, Scott	6 days
Feb 28, 10:39 AM CST	River Flood Warning	DVN	Louisa, Muscatine	7 days
Feb 28, 10:39 AM CST	River Flood Warning	DVN	Louisa	9 days
Feb 28, 10:39 AM CST	River Flood Warning	DVN	Des Moines, Louisa	10 days
Feb 28, 10:52 AM CST	River Flood Watch	DVN	Clinton	8 days
Feb 28, 10:52 AM CST	River Flood Watch	DVN	Muscatine	4 days
Feb 28, 3:04 PM CST	Severe Thunderstorm Warning	DVN	Lee	41 min
Feb 28, 3:26 PM CST	Severe Thunderstorm Warning	DVN	Iowa, Johnson, Keokuk, Washington	36 min
Feb 28, 3:44 PM CST	Severe Thunderstorm Warning	DVN	Lee	46 min
Feb 28, 3:51 PM CST	Severe Thunderstorm Warning	DVN	Cedar, Johnson, Muscatine	39 min
Feb 28, 4:01 PM CST	Severe Thunderstorm Warning	DVN	Cedar, Clinton, Scott	59 min
Feb 28, 4:02 PM CST	Tornado Warning Tornado observed	DVN	Clinton	22 min
Feb 28, 4:23 PM CST	Severe Thunderstorm Warning	DVN	Clinton	67 min
Feb 28, 5:19 PM CST	Severe Thunderstorm Warning	DVN	Iowa, Keokuk, Washington	26 min
Feb 28, 5:28 PM CST	Severe Thunderstorm Warning	DVN	Cedar, Johnson	29 min
Feb 28, 5:44 PM CST	Severe Thunderstorm Warning	DVN	Johnson	31 min
Feb 28, 3:54 PM CST	Severe Thunderstorm Warning	DVN	Bureau, Putnam	51 min
Feb 28, 4:10 PM CST	Severe Thunderstorm Warning	DVN	Bureau, Henry	35 min
Feb 28, 4:42 PM CST	Tornado Warning	DVN	Bureau, Putnam	14 min
Feb 28, 4:46 PM CST	Severe Thunderstorm Warning	DVN	Bureau, Putnam	44 min
Feb 28, 4:46 PM CST	Tornado Warning	DVN	Whiteside	15 min
Feb 28, 4:47 PM CST	Tornado Warning	DVN	Putnam	8 min

Nearby

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