Alert archive / Wisconsin / Tornado Warnings in 2017

Tornado Warning 8, NWS Milwaukee, WI

July 19, 2017Dane County, Green County, Rock County, Wisconsin

NWS Milwaukee, WI issued this tornado warning at Jul 19, 2017, 7:48 PM CDT for Dane County, Green County, Rock County, Wisconsin. It was in force for 42 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: Jul 19, 2017, 7:48 PM CDT (00:48 UTC)
Expired: Jul 19, 2017, 8:30 PM CDT
In force: 42 min
Issued by: NWS Milwaukee, WI
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Dane County, WI, Green County, WI, Rock County, WI

The radar

The Milwaukee radar (KMKX), 66 km from the middle of the area, began a volume at 00:50 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
Jul 19, 5:45 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 0.8 hours before the alert went out and 170 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: 1032 J/kg
Mixed-layer CIN: -76 J/kg
Mixed-layer LCL: 1506 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 6 m²/s²
0-3 km storm-relative helicity: 102 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

As transmitted.

141 
WFUS53 KMKX 200048
TORMKX
WIC025-045-105-200130-
/O.NEW.KMKX.TO.W.0008.170720T0048Z-170720T0130Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Milwaukee/Sullivan WI
748 PM CDT WED JUL 19 2017

The National Weather Service in Milwaukee/Sullivan has issued a

* Tornado Warning for...
  Northeastern Green County in south central Wisconsin...
  Northwestern Rock County in south central Wisconsin...
  Southern Dane County in south central Wisconsin...

* Until 830 PM CDT

* At 748 PM CDT, severe thunderstorms capable of producing both
  tornadoes and extensive straight line wind damage were located near
  Albany, or 8 miles west of Evansville, moving east at 45 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. 

* These dangerous storms will be near...
  Evansville around 800 PM CDT. 
  Edgerton around 815 PM CDT. 
  Lake Koshkonong around 830 PM CDT. 

Other locations impacted by this tornadic thunderstorm include
Fulton, Indianford, Mount Vernon, Cooksville, Albion, Magnolia,
Utica, Rockdale, Paoli and Dayton.

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.

This cluster 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 4303 8972 4305 8901 4283 8901 4268 8903
      4270 8961
TIME...MOT...LOC 0048Z 263DEG 39KT 4278 8946 

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

$$

SPM

3 follow-up statements

972 
WWUS53 KMKX 200058
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
758 PM CDT WED JUL 19 2017

WIC025-045-105-200130-
/O.CON.KMKX.TO.W.0008.000000T0000Z-170720T0130Z/
Green WI-Rock WI-Dane WI-
758 PM CDT WED JUL 19 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 830 PM CDT FOR
NORTHEASTERN GREEN...NORTHWESTERN ROCK AND SOUTHEASTERN DANE
COUNTIES...

At 758 PM CDT, a severe squall line capable of producing both
tornadoes and extensive straight line wind damage was located over
Evansville, moving east at 45 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. 

These dangerous storms will be near...
  Edgerton around 815 PM CDT. 
  Lake Koshkonong around 830 PM CDT. 

Other locations impacted by this tornadic thunderstorm include
Fulton, Indianford, Cooksville, Albion, Magnolia, Utica and Rockdale.

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.

This cluster 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 4303 8955 4305 8901 4283 8901 4268 8903
      4269 8935
TIME...MOT...LOC 0058Z 263DEG 39KT 4279 8931 

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

$$

SPM

534 
WWUS53 KMKX 200110
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
810 PM CDT WED JUL 19 2017

WIC045-200119-
/O.CAN.KMKX.TO.W.0008.000000T0000Z-170720T0130Z/
Green WI-
810 PM CDT WED JUL 19 2017

...THE TORNADO WARNING FOR NORTHEASTERN GREEN COUNTY IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

A severe thunderstorm watch remains in effect until midnight CDT for
south central and southeastern Wisconsin.

LAT...LON 4305 8901 4283 8901 4268 8903 4269 8920
      4303 8944
TIME...MOT...LOC 0109Z 263DEG 39KT 4281 8914 

$$

WIC025-105-200130-
/O.CON.KMKX.TO.W.0008.000000T0000Z-170720T0130Z/
Rock WI-Dane WI-
810 PM CDT WED JUL 19 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 830 PM CDT FOR
NORTHWESTERN ROCK AND SOUTHEASTERN DANE COUNTIES...

At 809 PM CDT, a severe squall line capable of producing both
tornadoes and extensive straight line wind damage was located near
Edgerton, moving east at 45 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. 

These dangerous storms will be near...
  Lake Koshkonong around 830 PM CDT. 

Other locations impacted by this tornadic thunderstorm include
Fulton, Indianford, Cooksville, Albion, Utica and Rockdale.

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.

This cluster 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 4305 8901 4283 8901 4268 8903 4269 8920
      4303 8944
TIME...MOT...LOC 0109Z 263DEG 39KT 4281 8914 

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

$$

SPM

710 
WWUS53 KMKX 200123
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
823 PM CDT WED JUL 19 2017

WIC025-105-200132-
/O.EXP.KMKX.TO.W.0008.000000T0000Z-170720T0130Z/
Rock WI-Dane WI-
823 PM CDT WED JUL 19 2017

...THE TORNADO WARNING FOR NORTHWESTERN ROCK AND SOUTHEASTERN DANE
COUNTIES WILL EXPIRE AT 830 PM CDT...
        
The storm which prompted the warning has weakened.
Therefore the warning will be allowed to expire.  However gusty winds
are still possible with this thunderstorm.

A severe thunderstorm watch remains in effect until midnight CDT for
south central and southeastern Wisconsin.

LAT...LON 4305 8901 4283 8901 4268 8903 4269 8920
      4303 8944
TIME...MOT...LOC 0122Z 263DEG 39KT 4283 8897 

$$

SPM

The office that day

Everything else NWS Milwaukee, WI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 19, 7:01 PM CDT	Tornado Warning	MKX	Iowa, Sauk	29 min
Jul 19, 7:10 PM CDT	Severe Thunderstorm Warning	MKX	Dane, Green, Rock	80 min
Jul 19, 7:24 PM CDT	Severe Thunderstorm Warning	MKX	Columbia, Sauk	81 min
Jul 19, 7:34 PM CDT	Special Weather Statement	MKX	Green Lake, Marquette	26 min
Jul 19, 7:53 PM CDT	Severe Thunderstorm Warning	MKX	Jefferson, Rock, Walworth	67 min
Jul 19, 8:28 PM CDT	Special Marine Warning	MKX		2 hr
Jul 19, 8:29 PM CDT	Special Weather Statement	MKX	Dodge, Fond du Lac, Green Lake, Washington	31 min
Jul 19, 8:37 PM CDT	Severe Thunderstorm Warning	MKX	Kenosha, Racine, Walworth	26 min
Jul 19, 8:40 PM CDT	Special Weather Statement	MKX	Milwaukee, Waukesha	2 hr
Jul 19, 9:02 PM CDT	Special Weather Statement	MKX	Kenosha	58 min
Jul 19, 9:16 PM CDT	Special Weather Statement	MKX	Columbia, Dane, Dodge	44 min
Jul 19, 9:32 PM CDT	Areal Flood Advisory	MKX	Dane	118 min
Jul 19, 10:03 PM CDT	Special Marine Warning	MKX		87 min
Jul 19, 10:09 PM CDT	Special Weather Statement	MKX	Dodge, Jefferson, Kenosha, Milwaukee, Ozaukee, Racine and 5 more	81 min
Jul 19, 10:28 PM CDT	High Wind Warning	MKX	Dane, Dodge, Green, Jefferson, Kenosha, Milwaukee and 6 more	2 hr
Jul 19, 10:35 PM CDT	Special Marine Warning	MKX		85 min
Jul 20, 12:26 AM CDT	Special Weather Statement	MKX	Columbia, Sauk	94 min
Jul 20, 12:33 AM CDT	Areal Flood Advisory	MKX	Sauk	6 hr
Jul 20, 1:20 AM CDT	Areal Flood Advisory	MKX	Dane	3 hr
Jul 20, 1:50 AM CDT	Special Weather Statement	MKX	Sauk	55 min
Jul 20, 2:26 AM CDT	Areal Flood Advisory	MKX	Dane, Iowa, Sauk	3 hr
Jul 20, 3:12 AM CDT	Areal Flood Advisory	MKX	Green, Lafayette	3 hr
Jul 20, 3:42 AM CDT	Special Weather Statement	MKX	Iowa	78 min
Jul 20, 5:07 AM CDT	Special Weather Statement	MKX	Green, Lafayette	38 min
Jul 20, 6:08 AM CDT	Special Weather Statement	MKX	Kenosha, Walworth	52 min
Jul 20, 7:03 AM CDT	River Flood Warning	MKX	Sauk	7 days
Jul 20, 7:03 AM CDT	River Flood Warning	MKX	Sauk	4 days
Jul 20, 7:03 AM CDT	River Flood Warning	MKX	Sauk	9 days
Jul 20, 9:54 AM CDT	River Flood Warning	MKX	Rock	3 days
Jul 20, 10:04 AM CDT	River Flood Warning	MKX	Lafayette	34 hr
Jul 20, 10:04 AM CDT	River Flood Warning	MKX	Green	13 days
Jul 20, 10:04 AM CDT	River Flood Warning	MKX	Lafayette	4 days
Jul 20, 10:08 AM CDT	River Flood Watch	MKX	Green, Rock	4 days
Jul 20, 1:30 PM CDT	Flash Flood Watch	MKX	Columbia, Dane, Dodge, Green, Iowa, Jefferson and 9 more	41 hr
Jul 20, 5:41 PM CDT	River Flood Warning	MKX	Green, Rock	8 days

Nearby

Tornado Warnings in Wisconsin, 2017 Every tornado warning in 2017 Tornadoes in 2017

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.