Alert archive / North Dakota / Mesoscale Discussions in 2012

Mesoscale Discussion 1105

June 9, 201213 counties in North Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 9, 2012, 6:48 AM CDT for 13 counties in North Dakota. It was in force for 87 min.

The area

The outline as issued.

The facts

Issued
Jun 9, 2012, 6:48 AM CDT (11:48 UTC)
Expired
Jun 9, 2012, 8:15 AM CDT
In force
87 min
Issued by
the Storm Prediction Center

Counties Benson County, ND, Cavalier County, ND, Eddy County, ND, Grand Forks County, ND, McHenry County, ND, Nelson County, ND, Pembina County, ND, Pierce County, ND, Ramsey County, ND, Rolette County, ND, Sheridan County, ND, Towner County, ND, Walsh County, ND

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 11.8 hours before the alert went out and 193 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, Bismarck Municip, ND at 00:00Z on 2012-06-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Bismarck Municip, ND at 00:00Z on 2012-06-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 56 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1638 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
56 m²/s²
0-3 km storm-relative helicity
179 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.

493 
ACUS11 KWNS 091148
SWOMCD
SPC MCD 091148 
NDZ000-091315-

MESOSCALE DISCUSSION 1105
NWS STORM PREDICTION CENTER NORMAN OK
0648 AM CDT SAT JUN 09 2012

AREAS AFFECTED...NRN ND

CONCERNING...SEVERE THUNDERSTORM WATCH 365...

VALID 091148Z - 091315Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 365
CONTINUES.

SUMMARY...A DAMAGING BOW WILL CONTINUE EWD OVER NRN ND...AND MAY
PERSIST TO THE E OF THE WATCH.

DISCUSSION...WINDS IN EXCESS OF 90 MPH WERE REPORTED NEAR MINOT ND
RECENTLY AS AN INTENSE BOW CONTINUES ENEWD ACROSS NRN ND. WHILE
SURFACE AIR IS RATHER COOL...STEEP LAPSE RATES REMAIN ALOFT AND A
SLY LOW LEVEL JET IS HELPING TO MAINTAIN THETA-E ADVECTION INTO THIS
SYSTEM. THE MOST INTENSE PART OF THIS BOW WILL AFFECT MCHENRY...NRN
PIERCE AND ROLETTE COUNTIES OVER THE NEXT COUPLE HOURS. IF THE
SYSTEM HOLDS TOGETHER...ANOTHER WATCH MAY BECOME NECESSARY FOR
PORTIONS OF NERN ND.

..JEWELL.. 06/09/2012

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...FGF...BIS...

LAT...LON   47510120 48080083 48440068 49040079 48999754 48709730
            47989709 47819720 47510120

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 9, 2:50 AM CDTMesoscale DiscussionSPCBurke, Divide, McKenzie, Mountrail, Renville, Ward and 1 more55 min
Jun 9, 3:07 AM CDTSevere Thunderstorm WatchSPCBottineau, Burke, Divide, McHenry, McKenzie, Mountrail and 5 more6 hr
Jun 9, 3:53 PM CDTMesoscale DiscussionSPCBarnes, Benson, Cavalier, Dickey, Eddy, Foster and 17 more97 min

Nearby

Mesoscale Discussions in North Dakota, 2012Every mesoscale discussion in 2012

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.