Alert archive / Iowa / Tornado Warnings in 2016
Tornado Warning 28, NWS Quad Cities, IA
NWS Quad Cities, IA issued this tornado warning at Aug 4, 2016, 8:54 PM CDT for Clinton County, Scott County, Iowa. It was in force for 36 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
- Aug 4, 2016, 8:54 PM CDT (01:54 UTC)
- Expired
- Aug 4, 2016, 9:30 PM CDT
- In force
- 36 min
- Issued by
- NWS Quad Cities, IA
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
Counties Clinton County, IA, Scott County, IA
The radar
The Quad Cities radar (KDVN), 18 km from the middle of the area, began a volume at 01:57 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 |
|---|---|---|---|
| Aug 4, 9:15 PM CDT | TSTM WND DMG | Park View, IA | SEVERAL TREES DOWN AND SIGNIFICANT ROOF DAMAGE TO A STRIP MALL. |
| Aug 4, 9:30 PM CDT | TSTM WND DMG | Dewitt, IA | APPROX 8 INCH DIAMETER, 25 FOOT TALL MAPLE TREE PULLED OUT NEAR RESIDENCE. WINDS ESTIMATED 45-50 MPH. |
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 |
|---|---|---|---|
| Aug 4, 4:44 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 1.9 hours before the alert went out and 22 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.
- Mixed-layer CAPE
- 1172 J/kg
- Mixed-layer CIN
- -121 J/kg
- Mixed-layer LCL
- 1357 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 89 m²/s²
- 0-3 km storm-relative helicity
- 146 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 7.0
The text
As transmitted.
118
WFUS53 KDVN 050154
TORDVN
IAC045-163-050230-
/O.NEW.KDVN.TO.W.0028.160805T0154Z-160805T0230Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE QUAD CITIES IA/IL
854 PM CDT THU AUG 4 2016
THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A
* TORNADO WARNING FOR...
SOUTHWESTERN CLINTON COUNTY IN EAST CENTRAL IOWA...
NORTHERN SCOTT COUNTY IN EAST CENTRAL IOWA...
* UNTIL 930 PM CDT
* AT 854 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
TORNADO WAS LOCATED OVER CALAMUS...OR 15 MILES NORTHEAST OF
DURANT...MOVING EAST AT 35 MPH.
HAZARD...TORNADO.
SOURCE...RADAR INDICATED ROTATION.
IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT
SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED.
DAMAGE TO ROOFS...WINDOWS...AND VEHICLES WILL OCCUR. TREE
DAMAGE IS LIKELY.
* THIS DANGEROUS STORM WILL BE NEAR...
GRAND MOUND AROUND 900 PM CDT.
DEWITT AND LONG GROVE AROUND 910 PM CDT.
MCCAUSLAND AROUND 920 PM CDT.
OTHER LOCATIONS IMPACTED BY THIS TORNADIC THUNDERSTORM INCLUDE
SHERMAN PARK...BIG ROCK...PARK VIEW...SCOTT COUNTY
PARK...DIXON...CLINTON COUNTY FAIRGROUNDS...CAMP CONESTOGA AND
MALONE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF YOU ARE OUTDOORS...IN
A MOBILE HOME...OR IN A VEHICLE...MOVE TO THE CLOSEST SUBSTANTIAL
SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 4173 9085 4187 9081 4181 9041 4167 9046
TIME...MOT...LOC 0154Z 282DEG 30KT 4179 9076
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
UTTECH3 follow-up statements
624
WWUS53 KDVN 050206
SVSDVN
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA/IL
906 PM CDT THU AUG 4 2016
IAC045-163-050230-
/O.CON.KDVN.TO.W.0028.000000T0000Z-160805T0230Z/
CLINTON IA-SCOTT IA-
906 PM CDT THU AUG 4 2016
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 930 PM CDT FOR SOUTH
CENTRAL CLINTON AND NORTHEASTERN SCOTT COUNTIES...
AT 905 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR LONG GROVE...OR 13 MILES NORTH OF DAVENPORT...MOVING
EAST AT 40 MPH.
HAZARD...TORNADO.
SOURCE...RADAR INDICATED ROTATION.
IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT
SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE
TO ROOFS...WINDOWS...AND VEHICLES WILL OCCUR. TREE DAMAGE
IS LIKELY.
THIS DANGEROUS STORM WILL BE NEAR...
MCCAUSLAND AROUND 915 PM CDT.
OTHER LOCATIONS IMPACTED BY THIS TORNADIC THUNDERSTORM INCLUDE PARK
VIEW...SCOTT COUNTY PARK...CLINTON COUNTY FAIRGROUNDS AND MALONE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF YOU ARE OUTDOORS...IN
A MOBILE HOME...OR IN A VEHICLE...MOVE TO THE CLOSEST SUBSTANTIAL
SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 4172 9077 4185 9069 4181 9041 4167 9046
TIME...MOT...LOC 0205Z 282DEG 34KT 4175 9057
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
UTTECH114
WWUS53 KDVN 050214
SVSDVN
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA/IL
914 PM CDT THU AUG 4 2016
IAC045-163-050230-
/O.CON.KDVN.TO.W.0028.000000T0000Z-160805T0230Z/
CLINTON IA-SCOTT IA-
914 PM CDT THU AUG 4 2016
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 930 PM CDT FOR SOUTH
CENTRAL CLINTON AND NORTHEASTERN SCOTT COUNTIES...
AT 913 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR MCCAUSLAND...OR 13 MILES NORTH OF
BETTENDORF...MOVING EAST AT 30 MPH.
HAZARD...TORNADO.
SOURCE...RADAR INDICATED ROTATION.
IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT
SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE
TO ROOFS...WINDOWS...AND VEHICLES WILL OCCUR. TREE DAMAGE
IS LIKELY.
THIS DANGEROUS STORM WILL BE NEAR...
MCCAUSLAND AROUND 925 PM CDT.
OTHER LOCATIONS IMPACTED BY THIS TORNADIC THUNDERSTORM INCLUDE PARK
VIEW AND SCOTT COUNTY PARK.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF YOU ARE OUTDOORS...IN
A MOBILE HOME...OR IN A VEHICLE...MOVE TO THE CLOSEST SUBSTANTIAL
SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 4170 9064 4183 9058 4181 9041 4167 9046
TIME...MOT...LOC 0213Z 280DEG 26KT 4175 9053
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
UTTECH056
WWUS53 KDVN 050224
SVSDVN
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA/IL
924 PM CDT THU AUG 4 2016
IAC045-163-050233-
/O.EXP.KDVN.TO.W.0028.000000T0000Z-160805T0230Z/
CLINTON IA-SCOTT IA-
924 PM CDT THU AUG 4 2016
...THE TORNADO WARNING FOR SOUTH CENTRAL CLINTON AND NORTHEASTERN
SCOTT COUNTIES WILL EXPIRE AT 930 PM CDT...
THE TORNADO THREAT HAS DIMINISHED AND THE TORNADO WARNING HAS BEEN
CANCELLED. HOWEVER...DAMAGING WINDS REMAIN LIKELY AND A SEVERE
THUNDERSTORM WARNING REMAINS IN EFFECT FOR THE AREA.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT FOR
EAST CENTRAL IOWA.
LAT...LON 4170 9064 4183 9058 4181 9041 4167 9046
TIME...MOT...LOC 0218Z 282DEG 30KT 4175 9053
$$
UTTECHThe office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 4, 7:15 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Linn | 60 min |
| Aug 4, 7:25 PM CDT | Severe Thunderstorm Warning | DVN | Dubuque | 50 min |
| Aug 4, 8:01 PM CDT | Severe Thunderstorm Warning | DVN | Jackson | 44 min |
| Aug 4, 8:04 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Clinton, Jackson, Jones | 56 min |
| Aug 4, 8:19 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Iowa, Johnson, Muscatine | 56 min |
| Aug 4, 8:43 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Muscatine, Scott | 62 min |
Nearby
Tornado Warnings in Iowa, 2016Every tornado warning in 2016Tornadoes in 2016
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.