Alert archive / Colorado / Mesoscale Discussions in 2003

Mesoscale Discussion 613

April 28, 20035 counties in Colorado; Hamilton County, Morton County, Stanton County, Kansas; Cimarron County, Texas County, Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Apr 28, 2003, 4:23 PM MDT for 5 counties in Colorado; Hamilton County, Morton County, Stanton County, Kansas; Cimarron County, Texas County, Oklahoma. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued: Apr 28, 2003, 4:23 PM MDT (22:23 UTC)
Expired: Apr 28, 2003, 7:00 PM MDT
In force: 3 hr
Issued by: the Storm Prediction Center

Counties Baca County, CO, Bent County, CO, Crowley County, CO, Kiowa County, CO, Prowers County, CO, Hamilton County, KS, Morton County, KS, Stanton County, KS, Cimarron County, OK, Texas County, OK

The radar

The Pueblo radar (KPUX), 207 km from the middle of the area, began a volume at 22:25 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

Dodge City, (KDDC), launched 12:00Z, 10.4 hours before the alert went out and 217 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: 1090 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 60 m²/s²
0-3 km storm-relative helicity: 127 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.

381 
ACUS11 KWNS 282224
SWOMCD
SPC MCD 282223 
OKZ000-KSZ000-COZ000-TXZ000-NMZ000-290100-

MESOSCALE DISCUSSION 0613
NWS STORM PREDICTION CENTER NORMAN OK
0523 PM CDT MON APR 28 2003

AREAS AFFECTED...SERN CO...EXTREME NERN NM...WRN OK PANHANDLE...SERN
KS

CONCERNING...SEVERE THUNDERSTORM POTENTIAL 

VALID 282223Z - 290100Z

ISOLATED TSTMS HAVE DEVELOPED ALONG HIGHER TERRAIN INVOF RATON MESA
AND NE OF TAD...AND SHOULD MOVE NEWD ACROSS ADJACENT HIGH PLAINS
THROUGH AT LEAST 02Z.  LARGE HAIL AND POTENTIALLY DAMAGING WIND IS
POSSIBLE.  LIMITED AREA/DURATION OF ACTIVITY MAY PRECLUDE WW
ISSUANCE.

MODIFIED MODEL SOUNDINGS SUGGEST INCREASING CAP WITH EWD EXTENT
ACROSS DISCUSSION AREA...WHICH WOULD LIMIT CONVECTIVE COVERAGE AWAY
FROM INITIATIVE OROGRAPHY..BUT AID POTENTIAL FOR UNSTABLE INFLOW
INTO REMAINING CELLS.  8.5-9 DEG C/KM MIDLEVEL LAPSE RATES INDICATED
OVER REGION...WITH DEW POINTS NEAR 50 AND TEMPS MID-UPPER 60S F
SUPPORTING 1000-1500 J/KG MLCAPE.  SUPERCELL STRUCTURES ARE POSSIBLE
BASED ON FORECAST VERTICAL SHEAR PROFILES WITH 10-20 KT SFC SELYS
CONTRIBUTING TO 30-40 KT SR INFLOW AND 200-250 J/KG SRH IN 0-3 KM
AGL LAYER.  SRH WILL INCREASE TO OVER 300 J/KG FOR ANY
RIGHTWARD-DEVIANT MOTIONS...TOWARD DUE E OR ESE.

..EDWARDS.. 04/28/2003

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

ATTN...WFO...DDC...GLD...AMA...PUB...BOU...ABQ...

36530117 36470317 38560397 38590200

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 28, 1:05 PM MDT	Mesoscale Discussion	SPC	Adams, Arapahoe, Boulder, Broomfield, Denver, Douglas and 4 more	115 min
Apr 28, 1:12 AM MDT	Mesoscale Discussion	SPC	Atchison, Brown, Doniphan, Jackson, Marshall, Nemaha and 1 more	93 min
Apr 28, 11:09 AM MDT	Mesoscale Discussion	SPC	Allen, Anderson, Bourbon, Cherokee, Coffey, Crawford and 6 more	2 hr
Apr 28, 4:10 PM MDT	Mesoscale Discussion	SPC	Allen, Anderson, Bourbon, Butler, Chase, Chautauqua and 22 more	65 min
Apr 28, 4:30 PM MDT	Severe Thunderstorm Watch	SPC	Allen, Anderson, Bourbon, Butler, Chase, Chautauqua and 12 more	3 hr

Nearby

Mesoscale Discussions in Colorado, 2003 Mesoscale Discussions in Kansas, 2003 Mesoscale Discussions in Oklahoma, 2003 Every 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.