Alert archive / Iowa / Tornado Warnings in 2013

Tornado Warning 7, NWS Quad Cities, IA

May 30, 2013Dubuque County, Iowa

NWS Quad Cities, IA issued this tornado warning at May 30, 2013, 2:16 PM CDT for Dubuque County, Iowa. It was in force for 29 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 30, 2013, 2:16 PM CDT (19:16 UTC)
Expired: May 30, 2013, 2:45 PM CDT
In force: 29 min
Issued by: NWS Quad Cities, IA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

County Dubuque County, IA

The radar

The Quad Cities radar (KDVN), 112 km from the middle of the area, began a volume at 19:18 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.

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, 7.3 hours before the alert went out and 113 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.

048 
WFUS53 KDVN 301916
TORDVN
IAC061-301945-
/O.NEW.KDVN.TO.W.0007.130530T1916Z-130530T1945Z/

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

THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL DUBUQUE COUNTY IN NORTHEAST IOWA...

* UNTIL 245 PM CDT

* AT 213 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED NEAR CENTRALIA...AND MOVING NORTHEAST AT 45
  MPH.

  HAZARD...DEVELOPING TORNADO AND QUARTER 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...
  SHERRILL AND BALLTOWN AROUND 225 PM CDT.

OTHER LOCATIONS IN THE WARNING INCLUDE OLD BALLTOWN.

OTHER LOCATIONS AFFECTED INCLUDE DUBUQUE COUNTY FAIRGROUNDS...CAMP
LITTLE CLOUD...MUD LAKE PARK...BANKSTON PARK AND FINLEY'S LANDING
PARK.

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 4265 9072 4263 9070 4259 9067 4241 9077
      4247 9100 4265 9093 4265 9090 4267 9090
      4268 9089
TIME...MOT...LOC 1916Z 207DEG 38KT 4253 9084

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

$$

12

2 follow-up statements

844 
WWUS53 KDVN 301922
SVSDVN

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

IAC061-301945-
/O.CON.KDVN.TO.W.0007.000000T0000Z-130530T1945Z/
DUBUQUE IA-
222 PM CDT THU MAY 30 2013

...A TORNADO WARNING REMAINS IN EFFECT FOR CENTRAL DUBUQUE COUNTY
UNTIL 245 PM CDT...

AT 218 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR RICKARDSVILLE...AND MOVING NORTHEAST AT 45 MPH.

HAZARD...DEVELOPING TORNADO AND QUARTER SIZE HAIL.

SOURCE...RADAR INDICATED ROTATION. A ROTATING WALL CLOUD WAS 
REPORTED NORTH OF PEOSTA EARLIER WITH THIS STORM.

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 AFFECT MAINLY RURAL AREAS OF CENTRAL
DUBUQUE COUNTY.

OTHER LOCATIONS AFFECTED INCLUDE DUBUQUE COUNTY FAIRGROUNDS...CAMP
LITTLE CLOUD...MUD LAKE PARK...BANKSTON PARK AND FINLEY'S LANDING
PARK.

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 4265 9072 4263 9070 4259 9067 4241 9077
      4247 9100 4265 9093 4265 9090 4267 9090
      4268 9089
TIME...MOT...LOC 1921Z 205DEG 38KT 4257 9082

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

$$

12

826 
WWUS53 KDVN 301934
SVSDVN

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

IAC061-301944-
/O.CAN.KDVN.TO.W.0007.000000T0000Z-130530T1945Z/
DUBUQUE IA-
234 PM CDT THU MAY 30 2013

...THE TORNADO WARNING FOR CENTRAL DUBUQUE COUNTY IS CANCELLED...

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

LAT...LON 4265 9072 4263 9070 4259 9067 4241 9077
      4247 9100 4265 9093 4265 9090 4267 9090
      4268 9089
TIME...MOT...LOC 1934Z 205DEG 38KT 4269 9073

$$

12

The office that day

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

Issued	Product	Office	Counties	Lasted
May 29, 7:35 PM CDT	Tornado Warning	DVN	Delaware	40 min
May 29, 8:43 PM CDT	River Flood Warning	DVN	Delaware, Jones	51 hr
May 29, 11:13 PM CDT	River Flood Warning	DVN	Muscatine, Scott	12 days
May 30, 10:14 AM CDT	River Flood Warning	DVN	Buchanan, Linn	4 days
May 30, 10:19 AM CDT	River Flood Warning	DVN	Jackson	4 days
May 30, 11:04 AM CDT	River Flood Warning	DVN	Johnson, Washington	15 days
May 30, 11:53 AM CDT	River Flood Warning	DVN	Dubuque	5 days
May 30, 11:53 AM CDT	River Flood Warning	DVN	Dubuque, Jackson	8 days
May 30, 11:53 AM CDT	River Flood Warning	DVN	Clinton	4 days
May 30, 11:53 AM CDT	River Flood Warning	DVN	Clinton, Scott	8 days
May 30, 11:53 AM CDT	River Flood Warning	DVN	Scott	6 days
May 30, 11:53 AM CDT	River Flood Warning	DVN	Muscatine	12 days
May 30, 1:26 PM CDT	Severe Thunderstorm Warning	DVN	Cedar, Des Moines, Louisa, Muscatine, Scott	49 min
May 30, 2:41 PM CDT	Severe Thunderstorm Warning	DVN	Henry, Jefferson, Lee, Van Buren	49 min
May 30, 3:09 PM CDT	Severe Thunderstorm Warning	DVN	Clinton, Scott	51 min
May 30, 3:28 PM CDT	Severe Thunderstorm Warning	DVN	Des Moines, Henry, Iowa, Jefferson, Keokuk, Lee and 2 more	47 min
May 30, 3:50 PM CDT	Special Weather Statement	DVN	Scott	2 hr
May 30, 3:58 PM CDT	Special Weather Statement	DVN	Scott	2 hr
May 30, 3:59 PM CDT	Severe Thunderstorm Warning	DVN	Benton, Cedar, Des Moines, Iowa, Johnson, Linn and 4 more	46 min
May 30, 4:15 PM CDT	Tornado Warning Tornado observed	DVN	Muscatine	30 min
May 30, 4:27 PM CDT	Severe Thunderstorm Warning	DVN	Benton, Buchanan, Cedar, Delaware, Dubuque, Johnson and 2 more	63 min
May 30, 4:36 PM CDT	Severe Thunderstorm Warning	DVN	Clinton, Dubuque, Jackson, Muscatine, Scott	54 min
May 30, 5:20 PM CDT	Special Weather Statement	DVN	Scott	70 min
May 30, 5:23 PM CDT	Severe Thunderstorm Warning	DVN	Clinton, Delaware, Dubuque, Jackson	67 min

Nearby

Tornado Warnings in Iowa, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.