Alert archive / Indiana / Mesoscale Discussions in 2004

Mesoscale Discussion 604

May 8, 20047 counties in Indiana

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

The area

The outline as issued.

The facts

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

Counties Elkhart County, IN, Kosciusko County, IN, LaGrange County, IN, Marshall County, IN, Noble County, IN, Saint Joseph County, IN, Whitley County, IN

The radar

The Northern Indiana radar (KIWX), 24 km from the middle of the area, began a volume at 00:15 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

Detroit, MI (KDTX), launched 00:00Z, 0.3 hours before the alert went out and 248 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1004 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 284 m²/s²
0-3 km storm-relative helicity: 337 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.

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.

Issued	Product	Office	Counties	Lasted
May 9, 9:35 AM EST	Mesoscale Discussion	SPC	Steuben	55 min
May 9, 11:48 AM EST	Mesoscale Discussion	SPC	DeKalb, Elkhart, LaGrange, LaPorte, Noble, Saint Joseph and 1 more	2 hr
May 9, 12:55 PM EST	Severe Thunderstorm Watch	SPC	Elkhart, LaGrange, Lake, LaPorte, Porter, Saint Joseph and 1 more	6 hr
May 9, 2:46 PM EST	Mesoscale Discussion	SPC	Elkhart, LaGrange, Lake, LaPorte, Porter, Saint Joseph and 1 more	89 min
May 9, 5:17 PM EST	Mesoscale Discussion	SPC	Elkhart, LaGrange, Lake, LaPorte, Porter, Saint Joseph and 1 more	88 min
May 9, 6:50 PM EST	Severe Thunderstorm Watch	SPC	Allen, DeKalb, Elkhart, Fulton, Jasper, Kosciusko and 11 more	4 hr

Nearby

Mesoscale Discussions in Indiana, 2004 Every 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; radar from the NEXRAD Level II archive.