Alert archive / Minnesota / Special Weather Statements in 2016

Special Weather Statement, NWS Twin Cities, MN

October 17, 2016Washington County, Minnesota

NWS Twin Cities, MN issued this special weather statement at Oct 17, 2016, 5:22 PM CDT for Washington County, Minnesota. It was in force for 38 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
Oct 17, 2016, 5:22 PM CDT (22:22 UTC)
Expired
Oct 17, 2016, 6:00 PM CDT
In force
38 min
Issued by
NWS Twin Cities, MN

County Washington County, MN

The radar

The Minneapolis radar (KMPX), 48 km from the middle of the area, began a volume at 22:23 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

TimeReportWhereRemark
Oct 17, 5:30 PM CDTHAIL 0.75Eagan, MN.
Oct 17, 5:42 PM CDTHAIL 0.75Cottage Grove, MN.

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

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 10.4 hours before the alert went out and 51 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-pSkew-T log-p diagram, Minneapolis, MN at 12:00Z on 2016-10-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 67 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2016-10-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -53 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
67 J/kg
Mixed-layer CIN
-360 J/kg
Mixed-layer LCL
651 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
-53 m²/s²
0-3 km storm-relative helicity
74 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

555 
WWUS83 KMPX 172222
SPSMPX

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
522 PM CDT MON OCT 17 2016

MNZ060-062-063-069-070-172300-
SCOTT-WASHINGTON-DAKOTA-HENNEPIN-RAMSEY-
522 PM CDT MON OCT 17 2016

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT SOUTHERN WASHINGTON...
SOUTHEASTERN HENNEPIN...NORTHEASTERN SCOTT...NORTHERN DAKOTA AND
SOUTHERN RAMSEY COUNTIES THROUGH 600 PM CDT...

AT 522 PM CDT...RADAR INDICATED STRONG THUNDERSTORMS WERE LOCATED
ALONG A LINE EXTENDING FROM EDINA TO SAVAGE TO CREDIT RIVER. MOVEMENT
WAS EAST AT 50 MPH.

WINDS IN EXCESS OF 30 MPH AND HALF INCH HAIL ARE POSSIBLE WITH THESE
STORMS.

LOCATIONS IMPACTED INCLUDE...
MINNEAPOLIS...ST. PAUL...BLOOMINGTON...EAGAN...WOODBURY...
EDEN PRAIRIE...BURNSVILLE...LAKEVILLE...APPLE VALLEY...EDINA...
MAPLEWOOD AND RICHFIELD.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY
CAUSE LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 10 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

LAT...LON 4474 9338 4489 9341 4510 9277 4506 9280
      4503 9276 4497 9277 4491 9276 4490 9278
      4482 9277 4477 9281 4474 9279 4468 9281
      4466 9342
TIME...MOT...LOC 2222Z 257DEG 45KT 4487 9336 4476 9333 4468 9337 

$$

JPC

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 17, 5:31 AM CDTDense Fog AdvisoryMPXBlue Earth, Brown, Chippewa, Faribault, Freeborn, Kandiyohi and 15 more5 hr
Oct 17, 5:00 PM CDTSpecial Weather StatementMPXHennepin30 min
Oct 17, 5:42 PM CDTSevere Thunderstorm WarningMPXWashington33 min
Oct 17, 2:30 AM CDTSpecial Weather StatementMPXRusk15 min
Oct 17, 4:42 PM CDTSpecial Weather StatementMPXRusk63 min
Oct 17, 5:59 PM CDTSpecial Weather StatementMPXBarron31 min
Oct 17, 6:08 PM CDTSevere Thunderstorm WarningMPXDunn, Pepin, Pierce, Saint Croix52 min
Oct 17, 6:38 PM CDTSpecial Weather StatementMPXRusk37 min

Nearby

Special Weather Statements in Minnesota, 2016Every special weather statement 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.