Alert archive / North Dakota / Mesoscale Discussions in 2004

Mesoscale Discussion 603

May 8, 200425 counties in North Dakota

The Storm Prediction Center issued this mesoscale discussion at May 8, 2004, 7:16 PM CDT for 25 counties in North Dakota. It was in force for 119 min.

The area

The outline as issued.

The facts

Issued
May 8, 2004, 7:16 PM CDT (00:16 UTC)
Expired
May 8, 2004, 9:15 PM CDT
In force
119 min
Issued by
the Storm Prediction Center
All 25 counties

Benson County, ND, Bottineau County, ND, Burke County, ND, Burleigh County, ND, Dickey County, ND, Emmons County, ND, Grant County, ND, Kidder County, ND, LaMoure County, ND, Logan County, ND, McHenry County, ND, McIntosh County, ND, McLean County, ND, Mercer County, ND, Morton County, ND, Mountrail County, ND, Oliver County, ND, Pierce County, ND, Renville County, ND, Rolette County, ND, Sheridan County, ND, Sioux County, ND, Stutsman County, ND, Ward County, ND, Wells County, ND

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 0.3 hours before the alert went out and 104 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 2004-05-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 196 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 2004-05-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 20 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
196 J/kg
Mixed-layer CIN
-62 J/kg
Mixed-layer LCL
2876 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
20 m²/s²
0-3 km storm-relative helicity
116 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.9

Open this sounding in Storm Lab

The text

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

000 
ACUS11 KWNS 090016
SWOMCD
SPC MCD 090016 
NDZ000-090215-

MESOSCALE DISCUSSION 0603
NWS STORM PREDICTION CENTER NORMAN OK
0716 PM CDT SAT MAY 08 2004

AREAS AFFECTED...CENTRAL ND

CONCERNING...SEVERE THUNDERSTORM WATCH 166...

VALID 090016Z - 090215Z

CONTINUE WW 166.

AT 00Z...LINE OF THUNDERSTORMS EXTENDING FROM BURKE COUNTY ND SWD
INTO NRN HETTINGER COUNTY WAS MOVING EWD AT 35-40 KT. LARGE-SCALE
SUPPORT FOR THUNDERSTORMS ACROSS CENTRAL ND CONTINUES TO BE
FAVORABLE AS WV IMAGERY SHOWS MID-UPPER LEVEL JET EXIT REGION ACROSS
WRN ND MOVING EWD. IR CLOUD TOPS CONTINUE TO COOL OWING TO STRONG
UPPER DYNAMIC SUPPORT. THUNDERSTORMS WILL ENCOUNTER LESS UNSTABLE
AIR MASS DURING THE NEXT 1-2 HOURS ACROSS CENTRAL
ND...HOWEVER...LARGER BOUNDARY LAYER DEWPOINT DEPRESSIONS OF 30-40F
MAY ENHANCE THREAT OF STRONG DOWNDRAFTS. MUCAPE REMAINS SUFFICIENT 
/500-1000 J/KG / TO SUSTAIN CONVECTION. STORMS WILL AFFECT THE MINOT
AREA AROUND 01Z.

..BANACOS.. 05/09/2004

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

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

48970269 47530252 46510248 46060140 46049807 48989987

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 8, 9:17 PM CDTMesoscale DiscussionSPCBarnes, Benson, Dickey, Eddy, Emmons, Foster and 15 more88 min
May 9, 2:00 PM CDTMesoscale DiscussionSPCSargent3 hr

Nearby

Mesoscale Discussions in North Dakota, 2004Every mesoscale discussion in 2004

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.