Severe Thunderstorm Warning 74, NWS Quad Cities, IA

961 
WWUS53 KDVN 172341
SVSDVN

Severe Weather Statement
National Weather Service Quad Cities IA/IL
641 PM CDT WED MAY 17 2017

IAC019-031-045-055-061-097-103-105-113-139-183-180030-
/O.CON.KDVN.SV.W.0074.000000T0000Z-170518T0030Z/
Jackson IA-Buchanan IA-Cedar IA-Dubuque IA-Johnson IA-Washington IA-
Jones IA-Delaware IA-Muscatine IA-Linn IA-Clinton IA-
641 PM CDT WED MAY 17 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM CDT
FOR WESTERN JACKSON...EASTERN BUCHANAN...CEDAR...DUBUQUE...JOHNSON...
NORTHEASTERN WASHINGTON...JONES...DELAWARE...WESTERN MUSCATINE...
EASTERN LINN AND NORTHWESTERN CLINTON COUNTIES...

At 640 PM CDT, severe thunderstorms were located along a line
extending from Hazleton to Masonville to near Prairieburg to near
Riverside, moving northeast at 45 mph.

HAZARD...70 mph wind gusts. 

SOURCE...Trained weather spotters. 

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings. 

Locations impacted include...
Cedar Rapids, Iowa City, Dubuque, Muscatine, Independence, Anamosa,
Manchester, Tipton, West Branch, Mechanicsville, Stanwood, Marion,
Coralville, North Liberty, Mount Vernon, Asbury, Dyersville,
Monticello, West Liberty and Wilton.

This includes the following highways...
 Interstate 80 in Iowa between mile markers 239 and 274.
 Interstate 380 between mile markers 1 and 6.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This is a DANGEROUS SITUATION. These storms are producing widespread
wind damage across Cedar Rapids metro area. SEEK SHELTER NOW inside a
sturdy structure and stay away from windows.
 
Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. These storms may cause serious injury and significant
property damage.

&&

A tornado watch remains in effect until 1100 PM CDT for northwestern
Illinois...and southeastern, northeastern and east central Iowa.

LAT...LON 4264 9071 4254 9064 4248 9066 4245 9061
      4139 9107 4140 9137 4142 9137 4142 9148
      4140 9149 4140 9169 4193 9163 4229 9165
      4248 9188 4255 9194 4264 9206 4265 9090
      4268 9090
TIME...MOT...LOC 2340Z 220DEG 40KT 4263 9192 4247 9157 4222 9136 4149
9150

HAIL...<.75IN
WIND...70MPH
 
$$

ERVIN

992 
WWUS53 KDVN 172347
SVSDVN

Severe Weather Statement
National Weather Service Quad Cities IA/IL
647 PM CDT WED MAY 17 2017

IAC019-031-045-055-061-097-103-105-113-139-183-180030-
/O.CON.KDVN.SV.W.0074.000000T0000Z-170518T0030Z/
Jackson IA-Buchanan IA-Cedar IA-Dubuque IA-Johnson IA-Washington IA-
Jones IA-Delaware IA-Muscatine IA-Linn IA-Clinton IA-
647 PM CDT WED MAY 17 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM CDT
FOR WESTERN JACKSON...NORTHEASTERN BUCHANAN...CEDAR...DUBUQUE...
JOHNSON...NORTHEASTERN WASHINGTON...JONES...DELAWARE...WESTERN
MUSCATINE...EASTERN LINN AND NORTHWESTERN CLINTON COUNTIES...

At 646 PM CDT, severe thunderstorms were located along a line
extending from near Aurora to near Manchester to Morley to near Lone
Tree, moving northeast at 35 mph.

HAZARD...70 mph wind gusts. 

SOURCE...Trained weather spotters. 

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings. 

Locations impacted include...
Iowa City, Dubuque, Muscatine, Anamosa, Manchester, Tipton, West
Branch, Mechanicsville, Stanwood, Marion, Coralville, North Liberty,
Mount Vernon, Asbury, Dyersville, Monticello, West Liberty, Wilton,
Cascade and Lisbon.

This includes Interstate 80 in Iowa between mile markers 239 and 274.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

This is a DANGEROUS SITUATION. These storms are producing widespread
wind damage across Linn and Jones County. SEEK SHELTER NOW inside a
sturdy structure and stay away from windows.
 
Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. These storms may cause serious injury and significant
property damage.

&&

A tornado watch remains in effect until 1100 PM CDT for northwestern
Illinois...and southeastern, northeastern and east central Iowa.

LAT...LON 4264 9071 4254 9064 4248 9066 4245 9061
      4139 9107 4140 9137 4142 9137 4142 9148
      4140 9149 4143 9169 4161 9167 4195 9156
      4229 9157 4248 9174 4258 9185 4264 9194
      4265 9090 4268 9090
TIME...MOT...LOC 2346Z 241DEG 32KT 4268 9174 4250 9151 4200 9123 4146
9147

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...70MPH
 
$$

ERVIN

628 
WWUS53 KDVN 172354
SVSDVN

Severe Weather Statement
National Weather Service Quad Cities IA/IL
654 PM CDT WED MAY 17 2017

IAC019-180003-
/O.CAN.KDVN.SV.W.0074.000000T0000Z-170518T0030Z/
Buchanan IA-
654 PM CDT WED MAY 17 2017

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN BUCHANAN COUNTY
IS CANCELLED...

The storms which prompted the warning have moved out of
the warned area. Therefore, the warning has been cancelled.

A tornado watch remains in effect until 1100 PM CDT for northwestern
Illinois...and southeastern, northeastern and east central Iowa.

LAT...LON 4264 9072 4254 9064 4248 9066 4245 9061
      4139 9107 4140 9137 4142 9137 4142 9148
      4140 9149 4143 9169 4161 9167 4195 9156
      4235 9149 4257 9161 4264 9161 4265 9090
      4268 9089
TIME...MOT...LOC 2353Z 228DEG 39KT 4272 9169 4255 9135 4204 9118 4150
9142

$$

IAC031-045-055-061-097-103-105-113-139-183-180030-
/O.CON.KDVN.SV.W.0074.000000T0000Z-170518T0030Z/
Jackson IA-Cedar IA-Dubuque IA-Johnson IA-Washington IA-Jones IA-
Delaware IA-Muscatine IA-Linn IA-Clinton IA-
654 PM CDT WED MAY 17 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM CDT
FOR WESTERN JACKSON...CEDAR...DUBUQUE...JOHNSON...NORTHEASTERN
WASHINGTON...JONES...DELAWARE...WESTERN MUSCATINE...EASTERN LINN AND
NORTHWESTERN CLINTON COUNTIES...

At 653 PM CDT, severe thunderstorms were located along a line
extending from near Arlington to Oneida to near Olin to Lone Tree,
moving northeast at 45 mph.

HAZARD...70 mph wind gusts. 

SOURCE...Trained weather spotters. 

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings. 

Locations impacted include...
Iowa City, Dubuque, Muscatine, Anamosa, Manchester, Tipton, West
Branch, Mechanicsville, Stanwood, Marion, Coralville, North Liberty,
Mount Vernon, Asbury, Dyersville, Monticello, West Liberty, Wilton,
Cascade and Lisbon.

This includes Interstate 80 in Iowa between mile markers 239 and 274.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
sturdy building.

This is a DANGEROUS SITUATION. These storms are producing widespread
wind damage across Delaware County through Johnson County. SEEK 
SHELTER NOW inside a sturdy structure and stay away from windows.
 
Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. These storms may cause serious injury and significant
property damage.

&&

A tornado watch remains in effect until 1100 PM CDT for northwestern
Illinois...and southeastern, northeastern and east central Iowa.

LAT...LON 4264 9072 4254 9064 4248 9066 4245 9061
      4139 9107 4140 9137 4142 9137 4142 9148
      4140 9149 4143 9169 4161 9167 4195 9156
      4235 9149 4257 9161 4264 9161 4265 9090
      4268 9089
TIME...MOT...LOC 2353Z 228DEG 39KT 4272 9169 4255 9135 4204 9118 4150
9142

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...70MPH
 
$$

ERVIN

844 
WWUS53 KDVN 172358
SVSDVN

Severe Weather Statement
National Weather Service Quad Cities IA/IL
658 PM CDT WED MAY 17 2017

IAC031-045-055-061-097-103-105-113-139-183-180030-
/O.CON.KDVN.SV.W.0074.000000T0000Z-170518T0030Z/
Jackson IA-Cedar IA-Dubuque IA-Johnson IA-Washington IA-Jones IA-
Delaware IA-Muscatine IA-Linn IA-Clinton IA-
658 PM CDT WED MAY 17 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM CDT
FOR WESTERN JACKSON...CEDAR...DUBUQUE...JOHNSON...NORTHEASTERN
WASHINGTON...JONES...DELAWARE...WESTERN MUSCATINE...EASTERN LINN AND
NORTHWESTERN CLINTON COUNTIES...

At 657 PM CDT, severe thunderstorms were located along a line
extending from Arlington to near Colesburg to near Cascade to near
Nichols, moving northeast at 55 mph.

HAZARD...70 mph wind gusts. 

SOURCE...Trained weather spotters. 

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings. 

Locations impacted include...
Iowa City, Dubuque, Muscatine, Anamosa, Manchester, Tipton, West
Branch, Mechanicsville, Stanwood, Coralville, North Liberty, Mount
Vernon, Asbury, Dyersville, Monticello, West Liberty, Wilton,
Cascade, Lisbon and Solon.

This includes Interstate 80 in Iowa between mile markers 239 and 274.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

This is a DANGEROUS SITUATION. These storms are producing widespread
wind damage across Delaware through Johnson County. SEEK SHELTER NOW 
inside a sturdy structure and stay away from windows.
 
Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. These storms may cause serious injury and significant
property damage.

&&

A tornado watch remains in effect until 1100 PM CDT for northwestern
Illinois...and southeastern, northeastern and east central Iowa.

LAT...LON 4264 9072 4254 9064 4248 9066 4245 9061
      4139 9107 4140 9137 4142 9137 4142 9148
      4140 9149 4143 9169 4161 9167 4195 9156
      4240 9137 4264 9161 4265 9090 4268 9089
TIME...MOT...LOC 2357Z 220DEG 48KT 4274 9166 4261 9120 4231 9109 4145
9132

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...70MPH
 
$$

ERVIN

230 
WWUS53 KDVN 180004
SVSDVN

Severe Weather Statement
National Weather Service Quad Cities IA/IL
704 PM CDT WED MAY 17 2017

IAC183-180013-
/O.CAN.KDVN.SV.W.0074.000000T0000Z-170518T0030Z/
Washington IA-
704 PM CDT WED MAY 17 2017

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN WASHINGTON COUNTY
IS CANCELLED...

The storms which prompted the warning have moved out of
the warned area. Therefore, the warning has been cancelled.

A tornado watch remains in effect until 1100 PM CDT for northwestern
Illinois...and southeastern, northeastern and east central Iowa.

LAT...LON 4264 9072 4254 9064 4248 9066 4245 9061
      4139 9107 4140 9137 4142 9137 4142 9148
      4153 9147 4166 9155 4190 9148 4236 9129
      4264 9155 4265 9090 4267 9089
TIME...MOT...LOC 0003Z 223DEG 47KT 4281 9158 4268 9112 4232 9095 4152
9124

$$

IAC031-045-055-061-097-103-105-113-139-180030-
/O.CON.KDVN.SV.W.0074.000000T0000Z-170518T0030Z/
Jackson IA-Cedar IA-Dubuque IA-Johnson IA-Jones IA-Delaware IA-
Muscatine IA-Linn IA-Clinton IA-
704 PM CDT WED MAY 17 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM CDT
FOR WESTERN JACKSON...CEDAR...DUBUQUE...EASTERN JOHNSON...JONES...
EASTERN DELAWARE...WESTERN MUSCATINE...SOUTHEASTERN LINN AND
NORTHWESTERN CLINTON COUNTIES...

At 703 PM CDT, severe thunderstorms were located along a line
extending from near Volga to near Colesburg to near Cascade to near
West Liberty, moving northeast at 55 mph.

HAZARD...70 mph wind gusts. 

SOURCE...Trained weather spotters. 

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings. 

Locations impacted include...
Iowa City, Dubuque, Muscatine, Anamosa, Tipton, West Branch,
Mechanicsville, Stanwood, Mount Vernon, Asbury, Dyersville,
Monticello, West Liberty, Wilton, Cascade, Lisbon, Solon, Epworth,
Farley and Peosta.

This includes Interstate 80 in Iowa between mile markers 245 and 274.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

This is a DANGEROUS SITUATION. These storms are producing widespread
wind damage across Dubuque county through Cedar county. SEEK SHELTER 
NOW inside a sturdy structure and stay away from windows.
 
Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. These storms may cause serious injury and significant
property damage.

&&

A tornado watch remains in effect until 1100 PM CDT for northwestern
Illinois...and southeastern, northeastern and east central Iowa.

LAT...LON 4264 9072 4254 9064 4248 9066 4245 9061
      4139 9107 4140 9137 4142 9137 4142 9148
      4153 9147 4166 9155 4190 9148 4236 9129
      4264 9155 4265 9090 4267 9089
TIME...MOT...LOC 0003Z 223DEG 47KT 4281 9158 4268 9112 4232 9095 4152
9124

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...70MPH
 
$$

ERVIN

737 
WWUS53 KDVN 180020 RRA
SVSDVN

Severe Weather Statement
National Weather Service Quad Cities IA/IL
720 PM CDT WED MAY 17 2017

IAC055-103-113-180030-
/O.CAN.KDVN.SV.W.0074.000000T0000Z-170518T0030Z/
Johnson IA-Delaware IA-Linn IA-
720 PM CDT WED MAY 17 2017

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN JOHNSON...EASTERN
DELAWARE AND SOUTHEASTERN LINN COUNTIES IS CANCELLED...

The storms which prompted the warning have moved out of
the warned area. Therefore, the warning has been cancelled.

A tornado watch remains in effect until 1100 PM CDT for northwestern
Illinois...and northeastern and east central Iowa.

LAT...LON 4264 9072 4254 9064 4248 9066 4245 9061
      4139 9107 4140 9130 4143 9128 4151 9125
      4169 9126 4208 9125 4229 9105 4263 9105
      4265 9090 4267 9089
TIME...MOT...LOC 0020Z 226DEG 36KT 4293 9142 4280 9096 4244 9079 4164
9108

$$

IAC031-045-061-097-105-139-180030-
/O.CON.KDVN.SV.W.0074.000000T0000Z-170518T0030Z/
Jackson IA-Cedar IA-Dubuque IA-Jones IA-Muscatine IA-Clinton IA-
720 PM CDT WED MAY 17 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM CDT
FOR WESTERN JACKSON...CEDAR...DUBUQUE...JONES...CENTRAL MUSCATINE AND
NORTHWESTERN CLINTON COUNTIES...

At 720 PM CDT, severe thunderstorms were located along a line
extending from near Farmersburg to near Cassville to near Peosta to
near Wilton, moving northeast at 40 mph.

HAZARD...70 mph wind gusts. 

SOURCE...Trained weather spotters. 

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings. 

Locations impacted include...
Dubuque, Muscatine, Tipton, Mechanicsville, Stanwood, Asbury, West
Liberty, Wilton, Cascade, Epworth, Farley, Peosta, Lowden, Olin,
Wyoming, Oxford Junction, Lost Nation, Bennett, Holy Cross and
Atalissa.

This includes Interstate 80 in Iowa between mile markers 260 and 274.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
sturdy building.

This is a DANGEROUS SITUATION. These storms are producing widespread
wind damage across Cedar  through Dubuque county. SEEK SHELTER NOW 
inside a sturdy structure and stay away from windows.
 
Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. These storms may cause serious injury and significant
property damage.

&&

A tornado watch remains in effect until 1100 PM CDT for northwestern
Illinois...and northeastern and east central Iowa.

LAT...LON 4264 9072 4254 9064 4248 9066 4245 9061
      4139 9107 4140 9130 4143 9128 4151 9125
      4169 9126 4208 9125 4229 9105 4263 9105
      4265 9090 4267 9089
TIME...MOT...LOC 0020Z 226DEG 36KT 4293 9142 4280 9096 4244 9079 4164
9108

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...70MPH
 
$$

ERVIN

275 
WWUS53 KDVN 180026
SVSDVN

Severe Weather Statement
National Weather Service Quad Cities IA/IL
726 PM CDT WED MAY 17 2017

IAC031-045-061-097-105-139-180035-
/O.EXP.KDVN.SV.W.0074.000000T0000Z-170518T0030Z/
Jackson IA-Cedar IA-Dubuque IA-Jones IA-Muscatine IA-Clinton IA-
726 PM CDT WED MAY 17 2017

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN JACKSON...CEDAR...
DUBUQUE...JONES...CENTRAL MUSCATINE AND NORTHWESTERN CLINTON COUNTIES
WILL EXPIRE AT 730 PM CDT...

The storms which prompted the warning have moved out of
the warned area.Therefore, the warning will be allowed to expire.
However heavy rain is still possible with these thunderstorms.

A tornado watch remains in effect until 1100 PM CDT for northwestern
Illinois...and northeastern and east central Iowa.

Remember, a Severe Thunderstorm Warning still remains in effect for
much of Dubuque county through Clinton county. 

LAT...LON 4264 9072 4254 9064 4248 9066 4245 9061
      4139 9107 4140 9130 4143 9128 4151 9125
      4169 9126 4208 9125 4229 9105 4263 9105
      4265 9090 4267 9089
TIME...MOT...LOC 0025Z 226DEG 36KT 4296 9138 4283 9092 4247 9075 4167
9104

$$

ERVIN

Area Forecast Discussion
National Weather Service Quad Cities IA IL
224 PM CDT Wed May 17 2017

.SYNOPSIS...
Issued at 221 PM CDT Wed May 17 2017

Abbreviated early issuance AFD to get ready for convective event.
Water vapor showing neg tilted upper wave on track acrs southeastern
Neb. After potentail convective severe event this afternoon and
evening, a reprieve with cooler conditions on Thu. Then the next
main upstream large cut-off upper low will roll out to the upper
Midwest for a wet end to the week and start to the weekend.
Generally cooler Sunday into earlier next week, with another wave
digging from the northwest for another precip event toward mid next
week.

&&

.SHORT TERM...(This Evening through Thursday)
ISSUED AT 221 PM CDT Wed May 17 2017

Will have to watch for isolated to sctrd elevated storms with
hail potential ahead of the "main show" for the rest of the
afternoon, but the main severe weather event currently gathering
steam/"bubbling" in sfc pressure falls max over the MO RVR
Valley. Strong wing of lift into current mesoanalysis-indicated
already strongly sheared environment in place acrs the local area,
supportive of enhanced severe weather risk acrs the area
especially along and west of the MS RVR. Most of latest run
HiRes/CAM's continue to suggest an arching wing or two of broken
line of supercells, mixed with a few strong convective clusters,
moving rapidly at 50-60 MPH in from the west- southwest mainly
after 21z, with prime impact window from 5 PM to 8 or 9 PM CDT
before the brunt of the activity blows eastward. Again speed of
storms to complicate matters and increase danger aspect. Current
CAPEs of 1000-1500 J/KG acrs the region may increase a bit more
through early evening, while brunt of Cap/EML starts to migrate
eastward. This should be adequate for such strong shear profiles
to work with for all modes of severe weather, with tornadoes and
large hail the prime threats. But lingering concern that limited
CAPE for such strong shear profiles, may actually limit a higher
end severe weather event such as if we had 3000+ CAPEs.

The tornado threat may be limited to the initial incoming line as
long as llvl winds have some type of southeasterly direction
component, but then switch to more hail and damaging winds, as llvl
ambient environmental winds go south-southwest making for a more
uniform vertical profile, but still very high in speed shear.

Some isolated to sctrd showers and storms may linger acrs the
northern half of the CWA after the main line exits off to the east-
northeast through midnight, but then mainly dry into Thu morning or
just some wrap-around showers in the far north as upper level
cyclone pivots acrs northern WI and induces wrap-around.

Thu...after wrap around showers decrease in the north, this day
mainly dry and cooler in between two upper cyclones, with varying
amounts of cloud cover. LLVL baroclinicity aligns and tightens along
and south of the DVN CWA into the evening, with northeast post-
frontal boundary layer winds keeping temps in the 60s to low 70s
acrs much of the area.    ..12..

.LONG TERM...(Thursday Night through next Wednesday)
ISSUED AT 221 PM CDT Wed May 17 2017

Active weather pattern to continue through the period with chances
of rain and thunderstorms through the beginning of the weekend and
then again midweek next week.  Previously discussed issues with
model inconsistency still remains with this package.  This, along
with the threat for severe weather today has led to heavy use of
blended guidance for the long term.  Overall agreement in the large
scale pattern through the period means that the mesoscale details
need to be worked out and thus lead to most of uncertainty
throughout the period.   Gibbs

&&

.AVIATION...(For the 18Z TAFS through 18Z Thursday Afternoon)
ISSUED AT 1241 PM CDT Wed May 17 2017

Brisk southerly sfc winds gusting over 30 KTS along with passing
mainly VFR clouds will be the main story this afternoon before the
main line of storms is expected to move into the local area from
the southwest later this afternoon and evening. An isolated storm to
wdly sctrd storms, though, is possible over the area ahead of the
main line, thus may keep VCNTY wording although that may be heavy
handed if current RADAR trends remain consistent. Have tried to
time a 1-2 hour window when a passing line of severe storms will
move northeastward through the TAF sites again during late
afternoon into early-mid evening. Then VCNTY for a few hours for
lingering isolated to sctrd storms behind the main line through
mid to late evening, then trend dry from midnight into Thu
morning. Sfc winds veering to the west at 10-20 KTS late tonight
into Thu morning, with cigs lowering to low VFR to MVFR in the main
low pressure storm system's wrap around cloud deck.   ..12..

&&

.DVN WATCHES/WARNINGS/ADVISORIES...
IA...NONE.
IL...NONE.
MO...NONE.
&&

SYNOPSIS...12
SHORT TERM...12
LONG TERM...Gibbs
AVIATION...12

Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
302 AM CDT Wed May 17 2017

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-180815-
Buchanan-Delaware-Dubuque-Benton-Linn-Jones-Jackson-Iowa-Johnson-
Cedar-Clinton-Muscatine-Scott-Keokuk-Washington-Louisa-Jefferson-
Henry IA-Des Moines-Van Buren-Lee-Jo Daviess-Stephenson-Carroll-
Whiteside-Rock Island-Henry IL-Bureau-Putnam-Mercer-Henderson-
Warren-Hancock-McDonough-Scotland-Clark-
302 AM CDT Wed May 17 2017

This Hazardous Weather Outlook is for portions of north central
Illinois...northwest Illinois...west central Illinois...east
central Iowa...northeast Iowa...southeast Iowa and northeast
Missouri.

.DAY ONE...TONIGHT

Scattered thunderstorms are expected this morning. The main
threats are lightning and hail to penny size.

More widespread thunderstorms are expected this afternoon and
evening. Fast-moving storms could produce damaging winds around 70
mph and tornadoes. A secondary threat is large hail.

A south wind will gust around 40 mph this afternoon. Drivers of
high profile vehicles should use caution.

Area rivers are experiencing flooding. Please see the
latest Flood Statements and Flood Warnings for details.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

There is a risk of thunderstorms late Thursday night through
Saturday evening. It is too early to determine the severe weather
risk.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is expected between 2 PM and 10 PM CDT today.

RP Kinney/08

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
616 PM CDT WED MAY 17 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0615 PM     TSTM WND GST     2 SSW LADORA            41.73N 92.20W
05/17/2017  M70 MPH          IOWA               IA   TRAINED SPOTTER

&&

PETERS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
617 PM CDT WED MAY 17 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0616 PM     HEAVY RAIN       2 SSW LADORA            41.73N 92.20W
05/17/2017  M1.70 INCH       IOWA               IA   TRAINED SPOTTER

            FALLEN OVER THE PAST 20 MINUTES

&&

PETERS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
621 PM CDT WED MAY 17 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0621 PM     TSTM WND GST     1 SSE CEDAR RAPIDS      41.95N 91.66W
05/17/2017  M70 MPH          LINN               IA   TRAINED SPOTTER

&&

PETERS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
624 PM CDT WED MAY 17 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0616 PM     TSTM WND GST     CEDAR RAPIDS            41.97N 91.67W
05/17/2017  M54 MPH          LINN               IA   ASOS

&&

GROSS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
627 PM CDT WED MAY 17 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0627 PM     TSTM WND GST     5 NNE CEDAR RAPIDS      42.05N 91.63W
05/17/2017  M60 MPH          LINN               IA   TRAINED SPOTTER

&&

PETERS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
629 PM CDT WED MAY 17 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0552 PM     HAIL             BATAVIA                 40.99N 92.17W
05/17/2017  E1.75 INCH       JEFFERSON          IA   TRAINED SPOTTER

            HAIL LASTED 10 MINUTES AND IS COVERING THE GROUND

0617 PM     HAIL             2 ESE KEOSAUQUA         40.72N 91.92W
05/17/2017  M1.00 INCH       VAN BUREN          IA   TRAINED SPOTTER

            HAIL LASTED FOR A MINUTE

0628 PM     TSTM WND GST     2 ENE MARION            42.04N 91.56W
05/17/2017  E70 MPH          LINN               IA   TRAINED SPOTTER

            WIND ESTIMATED 60 - 70 MPH RAIN IS HORIZONTAL

&&

TES