Alert archive / Iowa / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 80, NWS Quad Cities, IA

September 5, 20127 counties in Iowa; Mercer County, Rock Island County, Illinois

NWS Quad Cities, IA issued this severe thunderstorm warning at Sep 5, 2012, 3:41 AM CDT for 7 counties in Iowa; Mercer County, Rock Island County, Illinois. It was in force for 64 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: Sep 5, 2012, 3:41 AM CDT (08:41 UTC)
Expired: Sep 5, 2012, 4:45 AM CDT
In force: 64 min
Issued by: NWS Quad Cities, IA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Cedar County, IA, Des Moines County, IA, Henry County, IA, Johnson County, IA, Louisa County, IA, Muscatine County, IA, Washington County, IA, Mercer County, IL, Rock Island County, IL

The radar

The Quad Cities radar (KDVN), 90 km from the middle of the area, began a volume at 08:41 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
Sep 5, 3:54 AM CDT	TSTM WND GST 73	2 N Muscatine, IA	DELAYED REPORT.
Sep 5, 4:00 AM CDT	TSTM WND GST 50	4 N Cotter, IA	RAINFALL FROM THE EVENT WAS 0.75 INCHES
Sep 5, 4:00 AM CDT	TSTM WND GST 70	2 Ne Muscatine, IA	WIND GUSTS ESTIMATED TO BE 65 TO 70 MPH.
Sep 5, 4:15 AM CDT	TSTM WND GST 62	Muscatine, IA	WIND GUST MEASURED ON NORTH SIDE OF MUSCATINE ON IOWA HWY 38.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 8.7 hours before the alert went out and 97 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: 1890 J/kg
Mixed-layer CIN: -49 J/kg
Mixed-layer LCL: 1662 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: -23 m²/s²
0-3 km storm-relative helicity: 44 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.9

Open this sounding in Storm Lab

The text

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

438 
WUUS53 KDVN 050841
SVRDVN
IAC031-057-087-103-115-139-183-ILC131-161-050945-
/O.NEW.KDVN.SV.W.0080.120905T0841Z-120905T0945Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
341 AM CDT WED SEP 5 2012

THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CEDAR COUNTY IN EAST CENTRAL IOWA...
  JOHNSON COUNTY IN EAST CENTRAL IOWA...
  MUSCATINE COUNTY IN EAST CENTRAL IOWA...
  NORTHWESTERN MERCER COUNTY IN NORTHWEST ILLINOIS...  
  WESTERN ROCK ISLAND COUNTY IN NORTHWEST ILLINOIS...  
  NORTHWESTERN DES MOINES COUNTY IN SOUTHEAST IOWA...  
  HENRY COUNTY IN SOUTHEAST IOWA...
  LOUISA COUNTY IN SOUTHEAST IOWA...
  WASHINGTON COUNTY IN SOUTHEAST IOWA...

* UNTIL 445 AM CDT.

* AT 337 AM CDT...LOCAL LAW ENFORCEMENT REPORTED A LINE OF SEVERE
  THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS AROUND 60 MPH. 
  THESE STORMS WERE LOCATED APPROXIMATELY ALONG A LINE EXTENDING FROM
  ROCHESTER TO RICHMOND...OR ALONG A LINE EXTENDING FROM TIPTON TO 9
  MILES NORTH OF WASHINGTON...AND MOVING SOUTHEAST AT 35 MPH.


THIS INCLUDES INTERSTATE 80 IN IOWA BETWEEN MILE MARKERS 243 AND 275.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. MOVE IMMEDIATELY INDOORS AND STAY AWAY
FROM WINDOWS.

WIND DAMAGE WILL OCCUR BEFORE THUNDER CAN BE HEARD OR RAIN BEGINS.
SEEK SHELTER IMMEDIATELY.

PLEASE REPORT ANY SEVERE WEATHER OR DAMAGE TO YOUR LOCAL LAW
ENFORCEMENT AGENCY FOR RELAY TO THE NATIONAL WEATHER SERVICE.

&&

LAT...LON 4151 9194 4151 9184 4157 9182 4189 9112
      4127 9072 4084 9155 4113 9172 4116 9171
      4116 9174
TIME...MOT...LOC 0840Z 334DEG 32KT 4169 9110 4140 9170
WIND...HAIL 60MPH <1.00IN

$$

ERVIN

8 follow-up statements

145 
WWUS53 KDVN 050851
SVSDVN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
351 AM CDT WED SEP 5 2012

IAC031-057-087-103-115-139-183-ILC131-161-050945-
/O.CON.KDVN.SV.W.0080.000000T0000Z-120905T0945Z/
WASHINGTON IA-MUSCATINE IA-LOUISA IA-JOHNSON IA-HENRY IA-
DES MOINES IA-CEDAR IA-MERCER IL-ROCK ISLAND IL-
351 AM CDT WED SEP 5 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 AM CDT
FOR SOUTHWESTERN ROCK ISLAND...NORTHWESTERN MERCER...CEDAR...
NORTHWESTERN DES MOINES...HENRY...SOUTHERN JOHNSON...LOUISA...
MUSCATINE AND WASHINGTON COUNTIES...

AT 346 AM CDT...TRAINED SPOTTERS AND DOPPLER RADAR INDICATED A LINE
OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS AROUND 60
MPH.  THESE STORMS WERE LOCATED APPROXIMATELY ALONG A LINE EXTENDING
FROM WILTON TO WASHINGTON...OR ALONG A LINE EXTENDING FROM 9 MILES
WEST OF DURANT TO WASHINGTON...MOVING SOUTHEAST AT 35 MPH.

THIS WARNING INCLUDES IOWA CITY...TIPTON...WEST 
LIBERTY...MUSCATINE...WASHINGTON...AND COLUMBUS JUNCTION...AS WELL 
AS MANY OTHER CITIES IN THE WARNED AREA AFFECTED BY THE SEVERE LINE 
OF STORMS. 

THIS INCLUDES INTERSTATE 80 IN IOWA BETWEEN MILE MARKERS 243 AND 275.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. MOVE IMMEDIATELY INDOORS AND STAY AWAY
FROM WINDOWS.

WIND DAMAGE WILL OCCUR BEFORE THUNDER CAN BE HEARD OR RAIN BEGINS.
SEEK SHELTER IMMEDIATELY.

PLEASE REPORT ANY SEVERE WEATHER OR DAMAGE TO YOUR LOCAL LAW
ENFORCEMENT AGENCY FOR RELAY TO THE NATIONAL WEATHER SERVICE.

&&

LAT...LON 4151 9194 4151 9184 4157 9182 4188 9112
      4127 9072 4084 9155 4113 9172 4116 9171
      4116 9174
TIME...MOT...LOC 0850Z 334DEG 32KT 4161 9105 4132 9165
WIND...HAIL 60MPH <1.00IN

$$

ERVIN

460 
WWUS53 KDVN 050900
SVSDVN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
400 AM CDT WED SEP 5 2012

IAC031-057-087-103-115-139-183-ILC131-161-050945-
/O.CON.KDVN.SV.W.0080.000000T0000Z-120905T0945Z/
WASHINGTON IA-MUSCATINE IA-LOUISA IA-JOHNSON IA-HENRY IA-
DES MOINES IA-CEDAR IA-MERCER IL-ROCK ISLAND IL-
400 AM CDT WED SEP 5 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 AM CDT
FOR SOUTHWESTERN ROCK ISLAND...NORTHWESTERN MERCER...SOUTHERN
CEDAR...NORTHWESTERN DES MOINES...HENRY...SOUTHEASTERN JOHNSON...
LOUISA...MUSCATINE AND WASHINGTON COUNTIES...

AT 355 AM CDT...TRAINED SPOTTERS AND DOPPLER RADAR INDICATED A LINE
OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS AROUND 60
MPH.  THESE STORMS WERE LOCATED APPROXIMATELY ALONG A LINE EXTENDING
FROM SWEETLAND CENTER TO WASHINGTON AIRPORT...OR ALONG A LINE
EXTENDING FROM 7 MILES NORTHEAST OF MUSCATINE TO WASHINGTON...MOVING
SOUTHEAST AT 35 MPH.

THIS WARNING INCLUDES TIPTON...WEST LIBERTY...MUSCATINE...
WASHINGTON...AND COLUMBUS JUNCTION...AS WELL AS MANY OTHER CITIES IN 
THE WARNED AREA AFFECTED BY THE SEVERE LINE OF STORMS. 

THIS INCLUDES INTERSTATE 80 IN IOWA BETWEEN MILE MARKERS 256 AND 274.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. MOVE IMMEDIATELY INDOORS AND STAY AWAY
FROM WINDOWS.

WIND DAMAGE WILL OCCUR BEFORE THUNDER CAN BE HEARD OR RAIN BEGINS.
SEEK SHELTER IMMEDIATELY.

PLEASE REPORT ANY SEVERE WEATHER OR DAMAGE TO YOUR LOCAL LAW
ENFORCEMENT AGENCY FOR RELAY TO THE NATIONAL WEATHER SERVICE.

&&

LAT...LON 4157 9153 4179 9107 4127 9072 4084 9155
      4113 9172 4116 9171 4116 9174 4117 9175
      4143 9190
TIME...MOT...LOC 0859Z 334DEG 32KT 4148 9098 4125 9160
WIND...HAIL 60MPH <1.00IN

$$

ERVIN

640 
WWUS53 KDVN 050905
SVSDVN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
405 AM CDT WED SEP 5 2012

IAC031-057-087-103-115-139-183-ILC131-161-050945-
/O.CON.KDVN.SV.W.0080.000000T0000Z-120905T0945Z/
WASHINGTON IA-MUSCATINE IA-LOUISA IA-JOHNSON IA-HENRY IA-
DES MOINES IA-CEDAR IA-MERCER IL-ROCK ISLAND IL-
405 AM CDT WED SEP 5 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 AM CDT
FOR SOUTHWESTERN ROCK ISLAND...NORTHWESTERN MERCER...SOUTH CENTRAL
CEDAR...NORTHWESTERN DES MOINES...HENRY...SOUTHEASTERN JOHNSON...
LOUISA...MUSCATINE AND WASHINGTON COUNTIES...

AT 400 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS AROUND 60 MPH.  THESE STORMS WERE LOCATED APPROXIMATELY ALONG A
LINE EXTENDING FROM ILLINOIS CITY TO NOBLE...OR ALONG A LINE
EXTENDING FROM MUSCATINE TO 10 MILES SOUTHEAST OF WASHINGTON...MOVING
SOUTH AT 45 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
SWEDESBURG...CAIRO...BUFFALO PRAIRIE...TRENTON...WINFIELD...ELIZA...
PETERSVILLE...MARSTON...WAPELLO...MARSH...MANNON...MOUNT UNION...
MORNING SUN...GINGLE CORNERS...MILLERSBURG...NEW BOSTON...
TOOLESBORO...MOUNT PLEASANT...JOY...NEWPORT...YARMOUTH...ELRICK 
JUNCTION...GARLAND...AND NEW LONDON.

THIS INCLUDES INTERSTATE 80 IN IOWA BETWEEN MILE MARKERS 265 AND 274.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. MOVE IMMEDIATELY INDOORS AND STAY AWAY
FROM WINDOWS.

WIND DAMAGE WILL OCCUR BEFORE THUNDER CAN BE HEARD OR RAIN BEGINS.
SEEK SHELTER IMMEDIATELY.

PLEASE REPORT ANY SEVERE WEATHER OR DAMAGE TO YOUR LOCAL LAW
ENFORCEMENT AGENCY FOR RELAY TO THE NATIONAL WEATHER SERVICE.

&&

LAT...LON 4150 9149 4171 9101 4127 9072 4084 9155
      4113 9172 4116 9171 4116 9174 4117 9175
      4143 9190
TIME...MOT...LOC 0905Z 339DEG 39KT 4135 9096 4112 9158
WIND...HAIL 60MPH <1.00IN

$$

ERVIN

002 
WWUS53 KDVN 050912
SVSDVN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
412 AM CDT WED SEP 5 2012

IAC031-103-050922-
/O.CAN.KDVN.SV.W.0080.000000T0000Z-120905T0945Z/
JOHNSON IA-CEDAR IA-
412 AM CDT WED SEP 5 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL CEDAR AND
SOUTHEASTERN JOHNSON COUNTIES IS CANCELLED...

THE SEVERE THUNDERSTORM THAT WAS CAPABLE OF PRODUCING WIND DAMAGE 
HAS MOVED OUT OF THE WARNED AREA. THEREFORE THE SEVERE THUNDERSTORM 
WARNING HAS BEEN CANCELLED.

HOWEVER...THIS STORM IS STILL CAPABLE OF PRODUCING HEAVY RAIN.

LAT...LON 4142 9144 4142 9137 4144 9137 4160 9103
      4160 9093 4127 9072 4084 9155 4113 9172
      4116 9171 4116 9174 4117 9175 4134 9184
TIME...MOT...LOC 0912Z 339DEG 39KT 4128 9093 4105 9155

$$

IAC057-087-115-139-183-ILC131-161-050945-
/O.CON.KDVN.SV.W.0080.000000T0000Z-120905T0945Z/
WASHINGTON IA-MUSCATINE IA-LOUISA IA-HENRY IA-DES MOINES IA-MERCER 
IL-ROCK ISLAND IL-
412 AM CDT WED SEP 5 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 AM CDT
FOR SOUTHWESTERN ROCK ISLAND...NORTHWESTERN MERCER...NORTHWESTERN DES
MOINES...HENRY...LOUISA...MUSCATINE AND SOUTHERN WASHINGTON
COUNTIES...

AT 410 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS AROUND 60 MPH.  THESE STORMS WERE LOCATED APPROXIMATELY ALONG A
LINE EXTENDING FROM PETERSVILLE TO SWEDESBURG...OR ALONG A LINE
EXTENDING FROM 11 MILES SOUTHEAST OF MUSCATINE TO 7 MILES NORTH OF
MOUNT PLEASANT...MOVING SOUTH AT 40 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
MARSH...MANNON...MOUNT UNION...MORNING SUN...GINGLE CORNERS...
MILLERSBURG...NEW BOSTON...TOOLESBORO...JOY...NEWPORT...YARMOUTH...
ELRICK JUNCTION...MOUNT PLEASANT MUNICIPAL ARPT...GARLAND AND NEW
LONDON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. MOVE IMMEDIATELY INDOORS AND STAY AWAY
FROM WINDOWS.

WIND DAMAGE WILL OCCUR BEFORE THUNDER CAN BE HEARD OR RAIN BEGINS.
SEEK SHELTER IMMEDIATELY.

PLEASE REPORT ANY SEVERE WEATHER OR DAMAGE TO YOUR LOCAL LAW
ENFORCEMENT AGENCY FOR RELAY TO THE NATIONAL WEATHER SERVICE.

&&

LAT...LON 4142 9144 4142 9137 4144 9137 4160 9103
      4160 9093 4127 9072 4084 9155 4113 9172
      4116 9171 4116 9174 4117 9175 4134 9184
TIME...MOT...LOC 0912Z 339DEG 39KT 4128 9093 4105 9155
WIND...HAIL 60MPH <1.00IN

$$

ERVIN

585 
WWUS53 KDVN 050920
SVSDVN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
420 AM CDT WED SEP 5 2012

IAC057-087-115-139-183-ILC131-161-050945-
/O.CON.KDVN.SV.W.0080.000000T0000Z-120905T0945Z/
WASHINGTON IA-MUSCATINE IA-LOUISA IA-HENRY IA-DES MOINES IA-MERCER 
IL-ROCK ISLAND IL-
420 AM CDT WED SEP 5 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 AM CDT
FOR SOUTHWESTERN ROCK ISLAND...NORTHWESTERN MERCER...NORTHWESTERN DES
MOINES...HENRY...LOUISA...MUSCATINE AND SOUTHEASTERN WASHINGTON
COUNTIES...

AT 419 AM CDT...TRAINED SPOTTERS AND DOPPLER RADAR INDICATED A LINE
OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS AROUND 60
MPH.  THESE STORMS WERE LOCATED APPROXIMATELY ALONG A LINE EXTENDING
FROM BUFFALO PRAIRIE TO MOUNT PLEASANT...OR ALONG A LINE EXTENDING
FROM 9 MILES NORTHWEST OF ALEDO TO MOUNT PLEASANT...MOVING SOUTH AT
45 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO MORNING
SUN...MOUNT PLEASANT MUNICIPAL ARPT...YARMOUTH...GINGLE CORNERS...NEW
BOSTON...TOOLESBORO...MILLERSBURG...NEWPORT...GARLAND...ELRICK
JUNCTION...JOY AND NEW LONDON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. MOVE IMMEDIATELY INDOORS AND STAY AWAY
FROM WINDOWS.

PLEASE REPORT ANY SEVERE WEATHER OR DAMAGE TO YOUR LOCAL LAW
ENFORCEMENT AGENCY FOR RELAY TO THE NATIONAL WEATHER SERVICE.

&&

LAT...LON 4129 9180 4134 9141 4138 9129 4149 9105
      4160 9093 4127 9072 4084 9155 4113 9172
      4116 9171 4117 9175
TIME...MOT...LOC 0920Z 339DEG 39KT 4128 9085 4097 9157
WIND...HAIL 60MPH <1.00IN

$$

ERVIN

643 
WWUS53 KDVN 050927
SVSDVN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
427 AM CDT WED SEP 5 2012

IAC057-087-115-139-183-ILC131-161-050945-
/O.CON.KDVN.SV.W.0080.000000T0000Z-120905T0945Z/
WASHINGTON IA-MUSCATINE IA-LOUISA IA-HENRY IA-DES MOINES IA-MERCER 
IL-ROCK ISLAND IL-
427 AM CDT WED SEP 5 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 AM CDT
FOR SOUTHWESTERN ROCK ISLAND...NORTHWESTERN MERCER...NORTHWESTERN DES
MOINES...HENRY...LOUISA...SOUTH CENTRAL MUSCATINE AND SOUTHEASTERN
WASHINGTON COUNTIES...

AT 424 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS AROUND 60 MPH.  THESE STORMS WERE LOCATED APPROXIMATELY ALONG A
LINE EXTENDING FROM MILLERSBURG TO MOUNT PLEASANT MUNICIPAL ARPT...OR
ALONG A LINE EXTENDING FROM ALEDO TO MOUNT PLEASANT...MOVING SOUTH AT
45 MPH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. MOVE IMMEDIATELY INDOORS AND STAY AWAY
FROM WINDOWS.

PLEASE REPORT ANY SEVERE WEATHER OR DAMAGE TO YOUR LOCAL LAW
ENFORCEMENT AGENCY FOR RELAY TO THE NATIONAL WEATHER SERVICE.

&&

LAT...LON 4129 9127 4151 9087 4135 9078 4134 9075
      4133 9076 4127 9072 4084 9155 4113 9172
      4116 9171 4117 9175 4122 9177
TIME...MOT...LOC 0928Z 339DEG 39KT 4120 9081 4089 9153
WIND...HAIL 60MPH <1.00IN

$$

ERVIN

834 
WWUS53 KDVN 050934
SVSDVN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
434 AM CDT WED SEP 5 2012

IAC139-183-050944-
/O.CAN.KDVN.SV.W.0080.000000T0000Z-120905T0945Z/
WASHINGTON IA-MUSCATINE IA-
434 AM CDT WED SEP 5 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL MUSCATINE AND
SOUTHEASTERN WASHINGTON COUNTIES IS CANCELLED...

THE SEVERE THUNDERSTORM THAT WAS CAPABLE OF PRODUCING DAMAGING WINDS 
HAS MOVED OUT OF THE WARNED AREA. THEREFORE THE SEVERE THUNDERSTORM 
WARNING HAS BEEN CANCELLED.

HOWEVER...THIS STORM IS STILL CAPABLE OF PRODUCING HEAVY RAIN.

LAT...LON 4119 9120 4144 9083 4135 9078 4134 9075
      4133 9076 4127 9072 4084 9155 4106 9168
TIME...MOT...LOC 0934Z 339DEG 39KT 4114 9078 4083 9150

$$

IAC057-087-115-ILC131-161-050945-
/O.CON.KDVN.SV.W.0080.000000T0000Z-120905T0945Z/
LOUISA IA-HENRY IA-DES MOINES IA-MERCER IL-ROCK ISLAND IL-
434 AM CDT WED SEP 5 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 AM CDT
FOR SOUTHWESTERN ROCK ISLAND...NORTHWESTERN MERCER...NORTHWESTERN DES
MOINES...HENRY AND SOUTHEASTERN LOUISA COUNTIES...

AT 433 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS AROUND 60 MPH.  THESE STORMS WERE LOCATED APPROXIMATELY ALONG A
LINE EXTENDING FROM 6 MILES SOUTHEAST OF JOY TO 8 MILES SOUTH OF
MOUNT PLEASANT MUNICIPAL ARPT...OR ALONG A LINE EXTENDING FROM ALEDO
TO 9 MILES SOUTH OF MOUNT PLEASANT...MOVING SOUTH AT 45 MPH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. MOVE IMMEDIATELY INDOORS AND STAY AWAY
FROM WINDOWS.

PLEASE REPORT ANY SEVERE WEATHER OR DAMAGE TO YOUR LOCAL LAW
ENFORCEMENT AGENCY FOR RELAY TO THE NATIONAL WEATHER SERVICE.

&&

LAT...LON 4119 9120 4144 9083 4135 9078 4134 9075
      4133 9076 4127 9072 4084 9155 4106 9168
TIME...MOT...LOC 0934Z 339DEG 39KT 4114 9078 4083 9150
WIND...HAIL 60MPH <1.00IN

$$

ERVIN

355 
WWUS53 KDVN 050939 RRA
SVSDVN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
439 AM CDT WED SEP 5 2012

IAC057-087-115-ILC131-161-050950-
/O.EXP.KDVN.SV.W.0080.000000T0000Z-120905T0945Z/
LOUISA IA-HENRY IA-DES MOINES IA-MERCER IL-ROCK ISLAND IL-
439 AM CDT WED SEP 5 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN ROCK ISLAND...
NORTHWESTERN MERCER...NORTHWESTERN DES MOINES...CENTRAL HENRY AND
SOUTHEASTERN LOUISA COUNTIES WILL EXPIRE AT 445 AM CDT...

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

LAT...LON 4119 9120 4144 9083 4135 9078 4134 9075
      4133 9076 4127 9072 4084 9155 4106 9168
TIME...MOT...LOC 0940Z 339DEG 39KT 4108 9075 4077 9147

$$

ERVIN

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 4, 10:08 PM CDT	Special Weather Statement	DVN	Cedar, Clinton, Muscatine, Scott	52 min
Sep 5, 1:23 AM CDT	Special Weather Statement	DVN	Buchanan, Delaware	52 min
Sep 5, 1:54 AM CDT	Special Weather Statement	DVN	Benton, Buchanan, Delaware	51 min
Sep 5, 2:21 AM CDT	Special Weather Statement	DVN	Delaware, Dubuque	54 min
Sep 5, 3:05 AM CDT	Special Weather Statement	DVN	Cedar, Clinton, Iowa, Jackson, Johnson, Jones and 1 more	55 min
Sep 5, 4:16 AM CDT	Severe Thunderstorm Warning	DVN	Des Moines, Henry, Jefferson, Lee, Louisa, Scott and 1 more	59 min
Sep 4, 9:24 PM CDT	Special Weather Statement	DVN	Jo Daviess, Stephenson	36 min
Sep 5, 9:43 AM CDT	Special Weather Statement	DVN	Henry	62 min

Nearby

Severe Thunderstorm Warnings in Iowa, 2012 Severe Thunderstorm Warnings in Illinois, 2012 Every severe thunderstorm warning in 2012

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.