Alert archive / Illinois / Tornado Warnings in 2013

Tornado Warning 9, NWS Quad Cities, IA

May 30, 2013Henry County, Whiteside County, Illinois

NWS Quad Cities, IA issued this tornado warning at May 30, 2013, 5:32 PM CDT for Henry County, Whiteside County, Illinois. It was in force for 28 min. 2 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 30, 2013, 5:32 PM CDT (22:32 UTC)
Expired: May 30, 2013, 6:00 PM CDT
In force: 28 min
Issued by: NWS Quad Cities, IA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Henry County, IL, Whiteside County, IL

The radar

The Quad Cities radar (KDVN), 46 km from the middle of the area, began a volume at 22:32 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
May 30, 5:37 PM CDT	TORNADO	Prophetstown, IL	CONFIRMED TORNADO ON SPRING HILL AND VANDAM ROAD
May 30, 5:40 PM CDT	TSTM WND DMG	1 Wnw Morrison, IL	LARGE 8 INCH TREE LIMB DOWN AT RESIDENCE.

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
May 30, 12:32 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 10.5 hours before the alert went out and 39 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: 378 J/kg
Mixed-layer CIN: -59 J/kg
Mixed-layer LCL: 920 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 127 m²/s²
0-3 km storm-relative helicity: 141 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

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

735 
WFUS53 KDVN 302232
TORDVN
ILC073-195-302300-
/O.NEW.KDVN.TO.W.0009.130530T2232Z-130530T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
532 PM CDT THU MAY 30 2013

THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN HENRY COUNTY IN NORTHWEST ILLINOIS...  
  WHITESIDE COUNTY IN NORTHWEST ILLINOIS...

* UNTIL 600 PM CDT

* AT 527 PM CDT...A SEVERE SQUALL LINE CAPABLE OF PRODUCING TORNADOES
  THAT MAY NOT BE VISIBLE DUE TO HEAVY RAIN WAS LOCATED NEAR ERIE...
  AND MOVING NORTHEAST AT 50 MPH.

  HAZARD...DEVELOPING TORNADO.

  SOURCE...RADAR INDICATED ROTATION. ALONG THE LEADING 
           EDGE OF A SQUALL LINE.  A FUNNEL CLOUD WAS REPORTED NEAR 
           ERIE IL.

  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.

* LOCATIONS IMPACTED INCLUDE...
  MORRISON...ROCK FALLS...STERLING...PROPHETSTOWN...LYNDON...
  EMERSON...COLETA...LEON CORNERS...PORTLAND CORNERS...FENTON...
  DENROCK...HAMILTON CORNERS...UNIONVILLE...ROUND GROVE...AGNEW...
  MALVERN...COMO...GALT...WHITE PIGEON AND GRIMES ADDITION.

THIS INCLUDES INTERSTATE 88 BETWEEN MILE MARKERS 14 AND 42.

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.

THIS LINE OF THUNDERSTORMS IS CAPABLE OF PRODUCING TORNADOES AND
WIDESPREAD SIGNIFICANT WIND DAMAGE. DO NOT WAIT TO SEE OR HEAR THE
TORNADO. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A BUILDING.

&&

LAT...LON 4149 9006 4158 9018 4159 9019 4160 9016
      4163 9016 4164 9017 4164 9016 4166 9018
      4193 8984 4193 8962 4176 8963
TIME...MOT...LOC 2231Z 225DEG 45KT 4163 9004

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

LE

3 follow-up statements

096 
WWUS53 KDVN 302242
SVSDVN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
542 PM CDT THU MAY 30 2013

ILC073-302251-
/O.CAN.KDVN.TO.W.0009.000000T0000Z-130530T2300Z/
HENRY IL-
542 PM CDT THU MAY 30 2013

...THE TORNADO WARNING FOR NORTH CENTRAL HENRY COUNTY IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.

LAT...LON 4159 8990 4160 9007 4170 9014 4193 8984
      4193 8962 4176 8963
TIME...MOT...LOC 2241Z 225DEG 45KT 4172 8992

$$

ILC195-302300-
/O.CON.KDVN.TO.W.0009.000000T0000Z-130530T2300Z/
WHITESIDE IL-
542 PM CDT THU MAY 30 2013

...A TORNADO WARNING REMAINS IN EFFECT FOR WHITESIDE COUNTY UNTIL 600
PM CDT...

AT 537 PM CDT...A CONFIRMED TORNADO WAS LOCATED NEAR PROPHETSTOWN...
AND MOVING NORTHEAST AT 50 MPH.

HAZARD...DAMAGING TORNADO.

SOURCE...WHITESIDE COUNTY SHERRIFF CONFIRMED TORNADO NEAR 
         INTERSECTION OF SPRING HILL AND VAN DAM ROADS NEAR 
         PROPHETSTOWN.

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.

LOCATIONS IMPACTED INCLUDE...
MORRISON...ROCK FALLS...STERLING...EMERSON...COLETA...ROUND GROVE...
AGNEW...MALVERN...COMO...GALT...WHITE PIGEON...GRIMES ADDITION...
WHITESIDE COUNTY AIRPORT...DOUGLAS PARK...YEOWARD ADDITION AND
PENROSE.

THIS INCLUDES INTERSTATE 88 BETWEEN MILE MARKERS 17 AND 42.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPEAT...A TORNADO IS ON THE GROUND. 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.

THIS LINE OF THUNDERSTORMS IS CAPABLE OF PRODUCING TORNADOES AND
WIDESPREAD SIGNIFICANT WIND DAMAGE. DO NOT WAIT TO SEE OR HEAR THE
TORNADO. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST
FLOOR OF YOUR HOME OR BUSINESS.

&&

LAT...LON 4159 8990 4160 9007 4170 9014 4193 8984
      4193 8962 4176 8963
TIME...MOT...LOC 2241Z 225DEG 45KT 4172 8992

TORNADO...OBSERVED
HAIL...<.75IN

$$

LE

332 
WWUS53 KDVN 302254
SVSDVN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
554 PM CDT THU MAY 30 2013

ILC195-302300-
/O.CON.KDVN.TO.W.0009.000000T0000Z-130530T2300Z/
WHITESIDE IL-
554 PM CDT THU MAY 30 2013

...A TORNADO WARNING REMAINS IN EFFECT FOR EASTERN WHITESIDE COUNTY
UNTIL 600 PM CDT...

AT 551 PM CDT...A CONFIRMED TORNADO WAS LOCATED NEAR EMERSON...AND
MOVING NORTHEAST AT 50 MPH.

HAZARD...DAMAGING TORNADO.

SOURCE...WHITESIDE COUNTY SHERRIFF CONFIRMED A TORNADO NEAR 
         PROPHETSTOWN AT 537 PM.

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.

LOCATIONS IMPACTED INCLUDE...
STERLING...COLETA...YEOWARD ADDITION AND PENROSE.

THIS INCLUDES INTERSTATE 88 BETWEEN MILE MARKERS 28 AND 42.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPEAT...A TORNADO IS ON THE GROUND. 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.

THIS LINE OF THUNDERSTORMS IS CAPABLE OF PRODUCING TORNADOES AND
WIDESPREAD SIGNIFICANT WIND DAMAGE. DO NOT WAIT TO SEE OR HEAR THE
TORNADO. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST
FLOOR OF YOUR HOME OR BUSINESS.

&&

LAT...LON 4166 8978 4171 8991 4182 8998 4193 8984
      4193 8962 4176 8963
TIME...MOT...LOC 2253Z 225DEG 45KT 4183 8978

TORNADO...OBSERVED
HAIL...<.75IN

$$

LE

044 
WWUS53 KDVN 302300
SVSDVN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
600 PM CDT THU MAY 30 2013

ILC195-302309-
/O.EXP.KDVN.TO.W.0009.000000T0000Z-130530T2300Z/
WHITESIDE IL-
600 PM CDT THU MAY 30 2013

...THE TORNADO WARNING FOR EASTERN WHITESIDE COUNTY WILL EXPIRE AT
600 PM CDT...

THE TORNADO THREAT HAS DIMINISHED...THEREFORE THE TORNADO WARNING HAS
BEEN ALLOWED TO EXPIRE. HOWEVER...A SEVERE THUNDERSTORM WARNING 
REMAINS IN EFFECT FOR THE AREA.  STRONG GUSTY WINDS ARE STILL 
POSSIBLE WITH THIS THUNDERSTORM.

IN ADDITION...A TORNADO WATCH REMAINS IN EFFECT UNTIL 8 PM CDT.

LAT...LON 4166 8978 4171 8991 4182 8998 4193 8984
      4193 8962 4176 8963
TIME...MOT...LOC 2259Z 225DEG 45KT 4188 8971

$$

LE

The office that day

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

Issued	Product	Office	Counties	Lasted
May 29, 11:13 PM CDT	River Flood Warning	DVN	Rock Island	12 days
May 30, 11:53 AM CDT	River Flood Warning	DVN	Jo Daviess	5 days
May 30, 11:53 AM CDT	River Flood Warning	DVN	Jo Daviess	8 days
May 30, 11:53 AM CDT	River Flood Warning	DVN	Carroll, Whiteside	4 days
May 30, 11:53 AM CDT	River Flood Warning	DVN	Rock Island, Whiteside	8 days
May 30, 11:53 AM CDT	River Flood Warning	DVN	Rock Island	6 days
May 30, 11:53 AM CDT	River Flood Warning	DVN	Rock Island	12 days
May 30, 1:17 PM CDT	Special Weather Statement	DVN	Bureau	58 min
May 30, 1:26 PM CDT	Severe Thunderstorm Warning	DVN	Mercer, Rock Island	49 min
May 30, 1:37 PM CDT	Severe Thunderstorm Warning	DVN	Bureau, Whiteside	53 min
May 30, 3:09 PM CDT	Severe Thunderstorm Warning	DVN	Henry, Mercer, Rock Island, Whiteside	51 min
May 30, 3:28 PM CDT	Severe Thunderstorm Warning	DVN	Hancock, Henderson	47 min
May 30, 3:50 PM CDT	Special Weather Statement	DVN	Rock Island	2 hr
May 30, 3:58 PM CDT	Special Weather Statement	DVN	Rock Island	2 hr
May 30, 3:59 PM CDT	Severe Thunderstorm Warning	DVN	Henderson, Mercer, Rock Island, Warren	46 min
May 30, 4:02 PM CDT	Severe Thunderstorm Warning	DVN	Hancock, Henderson, McDonough, Warren	58 min
May 30, 4:36 PM CDT	Severe Thunderstorm Warning	DVN	Carroll, Henry, Mercer, Rock Island, Whiteside	54 min
May 30, 5:20 PM CDT	Special Weather Statement	DVN	Rock Island	70 min
May 30, 5:23 PM CDT	Severe Thunderstorm Warning	DVN	Carroll, Jo Daviess, Stephenson, Whiteside	67 min
May 30, 5:30 PM CDT	Severe Thunderstorm Warning	DVN	Bureau, Henry, Putnam, Whiteside	60 min
May 30, 6:29 PM CDT	Severe Thunderstorm Warning	DVN	Stephenson	46 min

Nearby

Tornado Warnings in Illinois, 2013 Every tornado warning in 2013 Tornadoes 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.