Alert archive / North Dakota / Mesoscale Discussions in 2003

Mesoscale Discussion 1339

June 11, 200310 counties in North Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 11, 2003, 8:59 PM CDT for 10 counties in North Dakota. It was in force for 91 min.

The area

The outline as issued.

The facts

Issued
Jun 11, 2003, 8:59 PM CDT (01:59 UTC)
Expired
Jun 11, 2003, 10:30 PM CDT
In force
91 min
Issued by
the Storm Prediction Center

Counties Barnes County, ND, Cass County, ND, Dickey County, ND, LaMoure County, ND, Logan County, ND, McIntosh County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Stutsman County, ND

The radar

The Aberdeen radar (KABR), 131 km from the middle of the area, began a volume at 01:59 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

Bismarck Municip, ND (KBIS), launched 00:00Z, 2.0 hours before the alert went out and 146 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 2003-06-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 444 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, Bismarck Municip, ND at 00:00Z on 2003-06-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 139 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
444 J/kg
Mixed-layer CIN
-19 J/kg
Mixed-layer LCL
744 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
139 m²/s²
0-3 km storm-relative helicity
169 m²/s²
Significant tornado parameter
0.3
Supercell composite
2.8

Open this sounding in Storm Lab

The text

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

547 
ACUS11 KWNS 120159
SWOMCD
SPC MCD 120159 
NDZ000-SDZ000-120330-

MESOSCALE DISCUSSION 1339
NWS STORM PREDICTION CENTER NORMAN OK
0859 PM CDT WED JUN 11 2003

AREAS AFFECTED...SERN ND

CONCERNING...SEVERE THUNDERSTORM POTENTIAL 

VALID 120159Z - 120330Z

ISOLATED LARGE HAIL/DAMAGING WINDS ARE POSSIBLE WITH THE STRONGEST
STORMS MOVING THROUGH THE AREA. WW NOT ANTICIPATED ATTM.

REGIONAL RADAR DATA INDICATE A STRONG TSTM OVER LAMOURE COUNTY IN
SERN ND WHICH HAS EXHIBITED SOME MID-LEVEL ROTATION FOR THE PAST
HOUR OR SO. ABERDEEN VWP SHOWS A VEERING LOW-LEVEL WIND PROFILE...
SUGGESTIVE OF A STRONG WAA REGIME OCCURRING ACROSS THE AREA. FORCING
FOR LARGE-SCALE ASCENT IS ALSO BEING AUGMENTED BY DPVA AHEAD OF
SHORTWAVE TROUGH...CURRENTLY OVER WRN ND. PRIMARY LIMITING FACTOR
ATTM APPEARS TO BE INSTABILITY PER 00Z ABERDEEN SOUNDING. 

NONETHELESS...THE THREAT OF STRONG TSTMS WILL CONTINUE ACROSS SERN
ND INTO POSSIBLY NWRN MN GIVEN THE FAVORABLE SPEED/DIRECTIONAL SHEAR
AND DYNAMIC FORCING AHEAD OF SHORTWAVE TROUGH. ALTHOUGH ISOLATED
LARGE HAIL/DAMAGING WINDS ARE POSSIBLE WITH THE STRONGEST STORMS...A
WW IS NOT ANTICIPATED.

..MEAD.. 06/12/2003

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

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

46349999 46829990 47199926 47459831 47079716 46289684
45929804 45989970

Nearby

Mesoscale Discussions in North Dakota, 2003Every mesoscale discussion in 2003

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.