Alert archive / Wyoming / Mesoscale Discussions in 2004

Mesoscale Discussion 1349

June 19, 20047 counties in Wyoming

The Storm Prediction Center issued this mesoscale discussion at Jun 19, 2004, 2:57 PM MDT for 7 counties in Wyoming. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Jun 19, 2004, 2:57 PM MDT (20:57 UTC)
Expired
Jun 19, 2004, 5:00 PM MDT
In force
2 hr
Issued by
the Storm Prediction Center

Counties Albany County, WY, Carbon County, WY, Converse County, WY, Goshen County, WY, Laramie County, WY, Natrona County, WY, Platte County, WY

The radar

The Riverton/Lander radar (KRIW), 169 km from the middle of the area, began a volume at 21:01 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

Riverton, WY (KRIW), launched 12:00Z, 9.0 hours before the alert went out and 163 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, Riverton, WY at 12:00Z on 2004-06-19Temperature 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 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Riverton, WY at 12:00Z on 2004-06-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 36 square meters per square second.19395878Sfc1 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
778 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
36 m²/s²
0-3 km storm-relative helicity
25 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.

278 
ACUS11 KWNS 192058
SWOMCD
SPC MCD 192057 
WYZ000-192300-

MESOSCALE DISCUSSION 1349
NWS STORM PREDICTION CENTER NORMAN OK
0357 PM CDT SAT JUN 19 2004

AREAS AFFECTED...CNTRL/SCNTRL WY INTO SE WY

CONCERNING...SEVERE THUNDERSTORM POTENTIAL 

VALID 192057Z - 192300Z

MARGINALLY SEVERE HAIL/WIND GUSTS WILL BE POSSIBLE WITH STRONGEST
STORMS REMAINDER OF AFTERNOON/EARLY EVENING...WW IS NOT CURRENTLY
ANTICIPATED.

LOW AMPLITUDE SHORTWAVE TROUGH /EVIDENT IN WV IMAGERY/ MOVING
THROUGH THE INTERMOUNTAIN REGION WILL CONTINUE TO SUPPORT SCATTERED
TSTM DEVELOPMENT ACROSS WY LATE THIS AFTERNOON. MODEST DAYTIME
INSOLATION HAS CONTRIBUTED TO SBCAPE ON THE ORDER OF 2000 J/KG PER
LATEST OBJECTIVE ANALYSIS. GIVEN MODERATE INSTABILITY...DEEP LAYER
SHEAR OF 35-40 KT /SUPPORTED BY MODEST CORE OF WESTERLIES/ WILL
FAVOR ORGANIZED MULTICELL CLUSTERS...WITH MARGINALLY SEVERE
HAIL/WIND GUSTS POSSIBLE.

..GUYER.. 06/19/2004

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

ATTN...WFO...CYS...RIW...

43480773 43560687 43420538 42900451 42310426 41650427
41100461 41060571 41120721 41240841 41860898 42680893
43400830

Nearby

Mesoscale Discussions in Wyoming, 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; radar from the NEXRAD Level II archive.