Alert archive / Minnesota / Special Weather Statements in 2014

Special Weather Statement, NWS Twin Cities, MN

August 3, 2014Washington County, Minnesota

NWS Twin Cities, MN issued this special weather statement at Aug 3, 2014, 10:11 PM CDT for Washington County, Minnesota. It was in force for 64 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
Aug 3, 2014, 10:11 PM CDT (03:11 UTC)
Expired
Aug 3, 2014, 11:15 PM CDT
In force
64 min
Issued by
NWS Twin Cities, MN

County Washington County, MN

The radar

The Minneapolis radar (KMPX), 55 km from the middle of the area, began a volume at 03:14 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 nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 3.2 hours before the alert went out and 58 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 00:00Z on 2014-08-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 575 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 2014-08-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 21 square meters per square second.193958Sfc1 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
575 J/kg
Mixed-layer CIN
-16 J/kg
Mixed-layer LCL
1615 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
21 m²/s²
0-3 km storm-relative helicity
20 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

047 
WWUS83 KMPX 040311
SPSMPX

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1011 PM CDT SUN AUG 3 2014

MNZ063-040415-
WASHINGTON-
1011 PM CDT SUN AUG 3 2014

...THUNDERSTORM MOVING OVER WASHINGTON COUNTY THROUGH 1115 PM CDT...

AT 1009 PM CDT...WEATHER SERVICE RADAR WAS TRACKING A STRONG
THUNDERSTORM 5 MILES EAST OF ST PAUL AIRPORT. THIS STORM WAS MOVING
SOUTHEAST AT 10 MPH.

ONE HALF INCH DIAMETER HAIL AND WINDS UP TO 30 MPH ARE EXPECTED WITH
THIS STORM.

* LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
  LANDFALL.
  WOODBURY.
  AFTON.
  ST MARYS POINT.
  AFTON STATE PARK.
  POINT DOUGLAS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO THE
STORM TO BE STRUCK BY LIGHTNING. SEEK SAFE SHELTER IMMEDIATELY.

&&

LAT...LON 4489 9301 4490 9298 4498 9298 4494 9275
      4492 9275 4490 9277 4484 9276 4475 9281
      4475 9283
TIME...MOT...LOC 0311Z 294DEG 8KT 4492 9295

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 3, 9:14 PM CDTSpecial Weather StatementMPXRamsey61 min
Aug 3, 10:21 PM CDTSpecial Weather StatementMPXGoodhue54 min
Aug 4, 10:14 AM CDTSpecial Weather StatementMPXMartin46 min
Aug 4, 10:16 AM CDTSpecial Weather StatementMPXMartin44 min
Aug 4, 10:59 AM CDTSpecial Weather StatementMPXFaribault46 min
Aug 4, 4:19 PM CDTSpecial Weather StatementMPXChippewa41 min
Aug 4, 5:36 PM CDTSpecial Weather StatementMPXEau Claire114 min

Nearby

Special Weather Statements in Minnesota, 2014Every special weather statement in 2014

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.