Alert archive / Iowa / Tornado Warnings in 2010

Tornado Warning 21, NWS Quad Cities, IA

June 23, 2010Rock Island County, Illinois; Muscatine County, Scott County, Iowa

NWS Quad Cities, IA issued this tornado warning at Jun 23, 2010, 4:12 PM CDT for Rock Island County, Illinois; Muscatine County, Scott County, Iowa. It was in force for 48 min. 4 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
Jun 23, 2010, 4:12 PM CDT (21:12 UTC)
Expired
Jun 23, 2010, 5:00 PM CDT
In force
48 min
Issued by
NWS Quad Cities, IA
Area
Storm-based polygon

Counties Muscatine County, IA, Scott County, IA, Rock Island County, IL

The radar

The Quad Cities radar (KDVN), 22 km from the middle of the area, began a volume at 21:12 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
Jun 23, 4:16 PM CDTTSTM WND GST 65Muscatine, IAALSO PEA HAIL. FORMER SPOTTER MU45.
Jun 23, 4:25 PM CDTTSTM WND DMG1 S Blue Grass, IAFLAG POLE BENT. GAZEBO BLOWN OVER. LIMBS DOWN. PEA SIZED HAIL. POWER OUTAGE. TIME ESTIMATED.
Jun 23, 4:29 PM CDTTSTM WND DMGMuscatine, IATREE LIMBS DOWN. REAL ESTATE SIGNS DOWN. HEAVY RAIN.
Jun 23, 4:30 PM CDTTSTM WND DMGBuffalo, IATREE AND BRANCHES DOWN. SHED FLIPPED OVER.

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
Jun 23, 2:10 PM CDTTornado WatchSPC7 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 9.2 hours before the alert went out and 237 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, Lincoln, IL at 12:00Z on 2010-06-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1735 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, Lincoln, IL at 12:00Z on 2010-06-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 121 square meters per square second.193958Sfc1 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
1735 J/kg
Mixed-layer CIN
-84 J/kg
Mixed-layer LCL
1302 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
121 m²/s²
0-3 km storm-relative helicity
115 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

259 
WFUS53 KDVN 232112
TORDVN
IAC139-163-ILC161-232200-
/O.NEW.KDVN.TO.W.0021.100623T2112Z-100623T2200Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
412 PM CDT WED JUN 23 2010

THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  EASTERN MUSCATINE COUNTY IN EAST CENTRAL IOWA...
  SOUTH CENTRAL SCOTT COUNTY IN EAST CENTRAL IOWA...
  CENTRAL ROCK ISLAND COUNTY IN NORTHWEST ILLINOIS...

* UNTIL 500 PM CDT.

* AT 407 PM CDT...THE PUBLIC REPORTED A TORNADO NEAR MUSCATINE...
  MOVING EAST AT 40 MPH. DOPPLER RADAR ALSO INDICATED SOME ROTATION.

* THE TORNADO WILL BE NEAR...
  SWEETLAND CENTER AROUND 415 PM CDT...
  WILDCAT DEN STATE PARK...NEW ERA...FAIRPORT AND ILLINOIS CITY
  AROUND 420 PM CDT...
  MIDWAY BEACH...MONTPELIER...LOUD THUNDER FOREST PRESERVE AND
  PLEASANT PRAIRIE AROUND 425 PM CDT...
  BLUE GRASS AROUND 430 PM CDT...

THIS INCLUDES INTERSTATE 280 BETWEEN MILE MARKERS 3 AND 17.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE SAFEST PLACE TO BE IN A TORNADO IS IN A BASEMENT OR INTERIOR ROOM
OR HALLWAY ON THE LOWEST FLOOR OF A BUILDING.

HEAVY RAIN MAY OBSCURE THE APPROACH OF THE TORNADO. TAKE SHELTER NOW!

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT WEDNESDAY EVENING
FOR SOUTHEASTERN IOWA AND NORTHWESTERN ILLINOIS AND NORTHEAST
MISSOURI.

&&

LAT...LON 4159 9054 4140 9049 4134 9116 4152 9121
TIME...MOT...LOC 2111Z 260DEG 40KT 4145 9105

$$

HAASE
2 follow-up statements
109 
WWUS53 KDVN 232124
SVSDVN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
424 PM CDT WED JUN 23 2010

IAC139-163-ILC161-232200-
/O.CON.KDVN.TO.W.0021.000000T0000Z-100623T2200Z/
SCOTT IA-MUSCATINE IA-ROCK ISLAND IL-
424 PM CDT WED JUN 23 2010

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM CDT FOR CENTRAL
ROCK ISLAND...EASTERN MUSCATINE AND SOUTH CENTRAL SCOTT COUNTIES...

AT 421 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A POSSIBLE TORNADO.  THIS TORNADO WAS LOCATED APPROXIMATELY 
NEAR BLUE GRASS...OR 11 MILES WEST OF DAVENPORT...MOVING EAST AT 40 
MPH.

THE TORNADO WILL BE NEAR...
  WEST LAKE PARK AND HIGHLAND SPRING GOLF COURSE AROUND 430 PM CDT...
  CREDIT ISLAND...DAVENPORT...ROCK ISLAND AND BLACKHAWK STATE PARK
  AROUND 435 PM CDT...
  ROCK ISLAND ARSENAL...FRUITLAND AND INDIAN BLUFF PARK AROUND 440 PM
  CDT...

THIS INCLUDES INTERSTATE 280 BETWEEN MILE MARKERS 3 AND 17.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE SAFEST PLACE TO BE IN A TORNADO IS IN A BASEMENT OR INTERIOR ROOM
OR HALLWAY ON THE LOWEST FLOOR OF A BUILDING.

HEAVY RAIN MAY OBSCURE THE APPROACH OF THE TORNADO. TAKE SHELTER NOW!

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT WEDNESDAY EVENING
FOR SOUTHEASTERN IOWA AND NORTHWESTERN ILLINOIS AND NORTHEAST
MISSOURI.

&&

LAT...LON 4159 9054 4140 9049 4134 9116 4152 9121
TIME...MOT...LOC 2124Z 261DEG 41KT 4151 9076

$$

HAASE
126 
WWUS53 KDVN 232155
SVSDVN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
455 PM CDT WED JUN 23 2010

IAC139-163-ILC161-232205-
/O.EXP.KDVN.TO.W.0021.000000T0000Z-100623T2200Z/
SCOTT IA-MUSCATINE IA-ROCK ISLAND IL-
455 PM CDT WED JUN 23 2010

...THE TORNADO WARNING FOR CENTRAL ROCK ISLAND...EASTERN MUSCATINE
AND SOUTH CENTRAL SCOTT COUNTIES WILL EXPIRE AT 500 PM CDT...

THE SEVERE THUNDERSTORM THAT WAS CAPABLE OF PRODUCING A TORNADO HAS 
MOVED EAST OUT OF THE WARNED AREA. THEREFORE THE TORNADO WARNING HAS 
BEEN ALLOWED TO EXPIRE.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT WEDNESDAY EVENING
FOR SOUTHEASTERN IOWA AND NORTHWESTERN ILLINOIS AND NORTHEAST
MISSOURI.

LAT...LON 4159 9054 4140 9049 4134 9116 4152 9121
TIME...MOT...LOC 2155Z 261DEG 41KT 4156 9029

$$

HAASE

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 23, 1:14 AM CDTSpecial Weather StatementDVNJo Daviess61 min
Jun 23, 3:42 AM CDTSevere Thunderstorm WarningDVNCarroll, Jo Daviess63 min
Jun 23, 4:19 AM CDTSevere Thunderstorm WarningDVNCarroll, Rock Island, Whiteside56 min
Jun 23, 4:34 AM CDTHeat AdvisoryDVNHancock, Henderson, McDonough, Warren13 hr
Jun 23, 5:07 AM CDTSevere Thunderstorm WarningDVNCarroll, Henry, Jo Daviess, Rock Island, Stephenson, Whiteside43 min
Jun 23, 5:56 AM CDTFlash Flood WarningDVNCarroll8 hr
Jun 23, 7:29 AM CDTFlash Flood WarningDVNBureau, Henry, Rock Island, Whiteside5 hr
Jun 23, 3:25 PM CDTSevere Thunderstorm WarningDVNMercer, Rock Island65 min
Jun 23, 3:52 PM CDTFlash Flood WarningDVNRock Island6 hr
Jun 23, 4:03 PM CDTSevere Thunderstorm WarningDVNCarroll30 min
Jun 23, 4:28 PM CDTSevere Thunderstorm WarningDVNBureau, Henry, Mercer, Rock Island62 min
Jun 23, 4:53 PM CDTSevere Thunderstorm WarningDVNHenderson, Henry, Mercer, Warren67 min
Jun 23, 5:05 PM CDTSevere Thunderstorm WarningDVNBureau, Putnam55 min
Jun 23, 5:14 PM CDTSevere Thunderstorm WarningDVNHancock, Henderson, McDonough61 min
Jun 23, 5:25 PM CDTFlash Flood WarningDVNBureau, Henry, Putnam, Whiteside6 hr
Jun 23, 5:30 PM CDTFlash Flood WarningDVNHancock, Henderson, McDonough, Warren6 hr
Jun 23, 5:44 PM CDTTornado WarningDVNWarren46 min
Jun 23, 5:57 PM CDTSevere Thunderstorm WarningDVNBureau, Putnam35 min
Jun 23, 6:30 PM CDTSevere Thunderstorm WarningDVNHancock, McDonough, Warren46 min
Jun 22, 8:49 PM CDTRiver Flood WarningDVNDelaware, Jones14 hr
Jun 23, 2:28 AM CDTSevere Thunderstorm WarningDVNBuchanan, Delaware62 min
Jun 23, 10:29 AM CDTRiver Flood WarningDVNJohnson, Louisa, Washington34 hr
Jun 23, 3:46 PM CDTSpecial Weather StatementDVNClinton59 min
Jun 23, 3:48 PM CDTSevere Thunderstorm WarningDVNDes Moines, Henry, Jefferson, Keokuk, Louisa, Washington57 min
Jun 23, 3:56 PM CDTTornado WarningDVNJohnson, Louisa, Muscatine49 min

Nearby

Tornado Warnings in Iowa, 2010Tornado Warnings in Illinois, 2010Every tornado warning in 2010Tornadoes in 2010

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.