Alert archive / Iowa / Tornado Warnings in 2013

Tornado Warning 4, NWS Quad Cities, IA

May 19, 2013Lee County, Iowa; Hancock County, Illinois; Clark County, Missouri

NWS Quad Cities, IA issued this tornado warning at May 19, 2013, 5:16 PM CDT for Lee County, Iowa; Hancock County, Illinois; Clark County, Missouri. It was in force for 29 min. 6 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
May 19, 2013, 5:16 PM CDT (22:16 UTC)
Expired
May 19, 2013, 5:45 PM CDT
In force
29 min
Issued by
NWS Quad Cities, IA
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.25 in

Counties Lee County, IA, Hancock County, IL, Clark County, MO

The radar

The Quad Cities radar (KDVN), 146 km from the middle of the area, began a volume at 22:17 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
May 19, 5:17 PM CDTHAIL 1.254 Ssw Keokuk, ILTIME ESTIMATED FROM RADAR.
May 19, 5:21 PM CDTHAIL 14 Ssw Keokuk, ILQUARTER SIZED HAIL AND WIND GUSTS TO ABOUT 40 MPH.
May 19, 5:25 PM CDTHAIL 1.75S Keokuk, IA
May 19, 5:28 PM CDTHAIL 1.751 Wnw Keokuk, IA
May 19, 5:34 PM CDTHAIL 0.882 Wnw Keokuk, IANICKEL SIZE HAIL.
May 19, 5:38 PM CDTHAIL 1Hamilton, IL

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
May 19, 2:59 PM CDTTornado WatchSPC8 hr

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 10.3 hours before the alert went out and 150 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 12:00Z on 2013-05-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 905 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 12:00Z on 2013-05-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 102 square meters per square second.1939Sfc1 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
905 J/kg
Mixed-layer CIN
-122 J/kg
Mixed-layer LCL
846 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
102 m²/s²
0-3 km storm-relative helicity
93 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

562 
WFUS53 KDVN 192216
TORDVN
IAC111-ILC067-MOC045-192245-
/O.NEW.KDVN.TO.W.0004.130519T2216Z-130519T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
516 PM CDT SUN MAY 19 2013

THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTH CENTRAL LEE COUNTY IN SOUTHEAST IOWA...
  WESTERN HANCOCK COUNTY IN WEST CENTRAL ILLINOIS...
  SOUTHEASTERN CLARK COUNTY IN NORTHEAST MISSOURI...

* UNTIL 545 PM CDT

* AT 512 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED NEAR WARSAW...AND MOVING NORTHEAST AT 30 MPH.

  HAZARD...DEVELOPING TORNADO AND HALF DOLLAR SIZE HAIL.

  SOURCE...RADAR INDICATED ROTATION.

  IMPACT...MOBILE HOMES WILL BE HEAVILY DAMAGED OR DESTROYED.
           SIGNIFICANT DAMAGE TO ROOFS...WINDOWS AND VEHICLES WILL
           OCCUR. FLYING DEBRIS WILL BE DEADLY TO PEOPLE AND ANIMALS.
           EXTENSIVE TREE DAMAGE IS LIKELY.

* THIS DANGEROUS STORM WILL BE NEAR...
  HAMILTON AND KEOKUK AROUND 525 PM CDT.
  ADRIAN AROUND 545 PM CDT.

OTHER LOCATIONS IN THE WARNING INCLUDE SANDUSKY AND GALLAND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4059 9147 4059 9112 4023 9136 4027 9157
TIME...MOT...LOC 2216Z 213DEG 28KT 4032 9141

TORNADO...RADAR INDICATED
HAIL...1.25IN

$$

MCCLURE
3 follow-up statements
491 
WWUS53 KDVN 192226
SVSDVN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
526 PM CDT SUN MAY 19 2013

IAC111-ILC067-MOC045-192245-
/O.CON.KDVN.TO.W.0004.000000T0000Z-130519T2245Z/
LEE IA-HANCOCK IL-CLARK MO-
526 PM CDT SUN MAY 19 2013

...A TORNADO WARNING REMAINS IN EFFECT FOR EXTREME EAST CENTRAL
CLARK...CENTRAL HANCOCK AND SOUTH CENTRAL LEE COUNTIES UNTIL 545 PM
CDT...

AT 521 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR WARSAW...AND MOVING NORTHEAST AT 30 MPH.

HAZARD...DEVELOPING TORNADO AND GOLF BALL SIZE HAIL.

SOURCE...RADAR INDICATED ROTATION.

IMPACT...MOBILE HOMES WILL BE HEAVILY DAMAGED OR DESTROYED.
         SIGNIFICANT DAMAGE TO ROOFS...WINDOWS AND VEHICLES WILL
         OCCUR. FLYING DEBRIS WILL BE DEADLY TO PEOPLE AND ANIMALS.
         EXTENSIVE TREE DAMAGE IS LIKELY.

THIS DANGEROUS STORM WILL BE NEAR...
  COLUSA AROUND 545 PM CDT.

OTHER LOCATIONS IN THE WARNING INCLUDE SANDUSKY AND GALLAND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...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 IN THE
QUAD CITIES.

&&

LAT...LON 4059 9147 4059 9112 4030 9133 4035 9153
TIME...MOT...LOC 2226Z 213DEG 28KT 4038 9135

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

MCCLURE
557 
WWUS53 KDVN 192235 RRA
SVSDVN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
535 PM CDT SUN MAY 19 2013

IAC111-ILC067-MOC045-192245-
/O.CON.KDVN.TO.W.0004.000000T0000Z-130519T2245Z/
LEE IA-HANCOCK IL-CLARK MO-
535 PM CDT SUN MAY 19 2013

...A TORNADO WARNING REMAINS IN EFFECT FOR EAST CENTRAL CLARK...
CENTRAL HANCOCK AND SOUTH CENTRAL LEE COUNTIES UNTIL 545 PM CDT...

AT 531 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR HAMILTON...AND MOVING NORTHEAST AT 30 MPH.

HAZARD...DEVELOPING TORNADO AND HALF DOLLAR SIZE HAIL.

SOURCE...RADAR INDICATED ROTATION. AT 530 PM CDT...A TRAINED SPOTTER 
         REPORTED A ROTATING WALL CLOUD SOUTHWEST OF FERRIS. 

IMPACT...MOBILE HOMES WILL BE HEAVILY DAMAGED OR DESTROYED.
         SIGNIFICANT DAMAGE TO ROOFS...WINDOWS AND VEHICLES WILL
         OCCUR. FLYING DEBRIS WILL BE DEADLY TO PEOPLE AND ANIMALS.
         EXTENSIVE TREE DAMAGE IS LIKELY.

THIS DANGEROUS STORM WILL BE NEAR...
  COLUSA AROUND 545 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...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 IN THE
QUAD CITIES.

&&

LAT...LON 4059 9147 4059 9112 4030 9133 4035 9153
TIME...MOT...LOC 2234Z 213DEG 28KT 4043 9130

TORNADO...RADAR INDICATED
HAIL...1.25IN

$$

MCCLURE
093 
WWUS53 KDVN 192242 RRA
SVSDVN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
542 PM CDT SUN MAY 19 2013

IAC111-ILC067-MOC045-192253-
/O.EXP.KDVN.TO.W.0004.000000T0000Z-130519T2245Z/
LEE IA-HANCOCK IL-CLARK MO-
542 PM CDT SUN MAY 19 2013

...THE TORNADO WARNING FOR EAST CENTRAL CLARK...CENTRAL HANCOCK AND
SOUTH CENTRAL LEE COUNTIES WILL EXPIRE AT 545 PM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
HOWEVER SMALL HAIL AND GUSTY WINDS ARE STILL POSSIBLE WITH THIS 
THUNDERSTORM.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT 
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE 
IN THE QUAD CITIES.

LAT...LON 4059 9147 4059 9112 4030 9133 4035 9153
TIME...MOT...LOC 2243Z 213DEG 28KT 4049 9125

$$

MCCLURE

The office that day

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

IssuedProductOfficeCountiesLasted
May 19, 3:47 AM CDTSpecial Weather StatementDVNKeokuk58 min
May 19, 4:34 AM CDTSpecial Weather StatementDVNBenton, Iowa41 min
May 19, 5:16 AM CDTSpecial Weather StatementDVNBuchanan, Linn59 min
May 19, 5:38 AM CDTSpecial Weather StatementDVNLouisa37 min
May 19, 10:14 AM CDTSpecial Weather StatementDVNLee61 min
May 19, 11:23 AM CDTSpecial Weather StatementDVNDes Moines, Henry, Louisa52 min
May 19, 12:06 PM CDTSevere Thunderstorm WarningDVNCedar, Louisa, Muscatine, Scott39 min
May 19, 1:10 PM CDTSpecial Weather StatementDVNClinton, Jackson65 min
May 19, 1:48 PM CDTSevere Thunderstorm WarningDVNClinton, Jackson42 min
May 19, 4:09 PM CDTSevere Thunderstorm WarningDVNLee51 min
May 19, 4:52 PM CDTSpecial Weather StatementDVNDes Moines, Henry, Lee, Louisa, Van Buren68 min
May 19, 4:58 PM CDTSevere Thunderstorm WarningDVNDes Moines47 min
May 19, 5:01 PM CDTSevere Thunderstorm WarningDVNLee59 min
May 19, 5:27 PM CDTSevere Thunderstorm WarningDVNMuscatine, Scott48 min
May 19, 5:45 PM CDTSevere Thunderstorm WarningDVNDes Moines, Lee60 min
May 19, 6:09 PM CDTSevere Thunderstorm WarningDVNClinton, Scott51 min
May 19, 6:33 PM CDTSevere Thunderstorm WarningDVNClinton, Scott42 min
May 19, 6:46 PM CDTSevere Thunderstorm WarningDVNClinton, Jackson29 min
May 19, 2:24 PM CDTSevere Thunderstorm WarningDVNJo Daviess, Stephenson36 min
May 19, 6:44 PM CDTSpecial Weather StatementDVNHenderson, Mercer, Warren31 min
May 19, 6:57 PM CDTSevere Thunderstorm WarningDVNHenderson, Warren48 min

Nearby

Tornado Warnings in Iowa, 2013Tornado Warnings in Illinois, 2013Tornado Warnings in Missouri, 2013Every tornado warning in 2013Tornadoes in 2013

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.