Alert archive / Minnesota / Special Weather Statements in 2015

Special Weather Statement, NWS Twin Cities, MN

August 6, 2015Wright County, Minnesota

NWS Twin Cities, MN issued this special weather statement at Aug 6, 2015, 11:45 PM CDT for Wright County, Minnesota. It was in force for 2 hr. 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 6, 2015, 11:45 PM CDT (04:45 UTC)
Expired
Aug 7, 2015, 1:45 AM CDT
In force
2 hr
Issued by
NWS Twin Cities, MN

County Wright County, MN

The radar

The Minneapolis radar (KMPX), 68 km from the middle of the area, began a volume at 04:47 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, 4.8 hours before the alert went out and 66 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 2015-08-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 583 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 2015-08-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 181 square meters per square second.1939Sfc1 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
583 J/kg
Mixed-layer CIN
-18 J/kg
Mixed-layer LCL
857 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
181 m²/s²
0-3 km storm-relative helicity
264 m²/s²
Significant tornado parameter
0.4
Supercell composite
5.2

Open this sounding in Storm Lab

The text

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

907 
WWUS83 KMPX 070445
SPSMPX

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1145 PM CDT THU AUG 6 2015
 
MNZ049-051-058-059-070645-
STEARNS-SHERBURNE-WRIGHT-MEEKER-
1145 PM CDT THU AUG 6 2015

...VERY HEAVY RAIN AND LOCALIZED MINOR FLOODING EXPECTED...

VERY HEAVY RAIN WITH THE POTENTIAL FOR LOCALIZED FLOODING WILL AFFECT
THE FOLLOWING COUNTIES...

STEARNS...SHERBURNE...WRIGHT...MEEKER...

AT 1140 PM CDT...VERY HEAVY RAIN WITH THE POTENTIAL FOR FLOODING WAS 
OVER KIMBALL...OR NEAR ST. CLOUD. RAINFALL RATES OF ONE TO TWO 
INCHES PER HOUR WILL OCCUR IN STREANS...SHERBURNE...WRIGHT AND 
MEEKER COUNTIES THROUGH 1 AM. 

LOCATIONS IMPACTED INCLUDE...
ST. CLOUD...MONTICELLO...BIG LAKE...BECKER...ANNANDALE...MAPLE
LAKE...CLEARWATER...EDEN VALLEY...WATKINS...KIMBALL...CLEAR LAKE AND
SANTIAGO.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 INTERSTATE 94 IN MINNESOTA BETWEEN MILE MARKERS 171 AND 198.
 U.S. HIGHWAY 10 IN MINNESOTA BETWEEN MILE MARKERS 184 AND 204.
 U.S. HIGHWAY 12 BETWEEN MILE MARKERS 93 AND 97.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...AS WELL AS FARM AND COUNTRY ROADS. DO NOT
ATTEMPT TO TRAVEL ACROSS FLOODED ROADS. FIND ALTERNATE ROUTES.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.

LAT...LON 4526 9370 4514 9467 4539 9469 4556 9381
TIME...MOT...LOC 0442Z 270DEG 25KT 4532 9421 
$$

JLT

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 6, 8:13 PM CDTSpecial Weather StatementMPXNicollet47 min
Aug 6, 8:15 PM CDTSpecial Weather StatementMPXSwift2 hr
Aug 6, 8:52 PM CDTSpecial Weather StatementMPXBlue Earth, Le Sueur, Nicollet, Waseca23 min
Aug 6, 9:02 PM CDTSevere Thunderstorm WarningMPXBlue Earth, Nicollet43 min

Nearby

Special Weather Statements in Minnesota, 2015Every special weather statement in 2015

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.