Alert archive / West Virginia / Mesoscale Discussions in 2003

Mesoscale Discussion 1766

July 10, 20034 states

The Storm Prediction Center issued this mesoscale discussion at Jul 10, 2003, 6:57 PM EDT for 4 states. It was in force for 93 min.

The area

The outline as issued.

The facts

Issued
Jul 10, 2003, 6:57 PM EDT (22:57 UTC)
Expired
Jul 10, 2003, 8:30 PM EDT
In force
93 min
Issued by
the Storm Prediction Center
All 40 counties

Allegany County, MD, Garrett County, MD, Bedford County, PA, Fayette County, PA, Fulton County, PA, Somerset County, PA, Bland County, VA, Buchanan County, VA, City of Bristol, VA, City of Norton, VA, Dickenson County, VA, Highland County, VA, Lee County, VA, Russell County, VA, Scott County, VA, Smyth County, VA, Tazewell County, VA, Washington County, VA, Wise County, VA, Barbour County, WV, Fayette County, WV, Grant County, WV, Greenbrier County, WV, Hampshire County, WV, McDowell County, WV, Mercer County, WV, Mineral County, WV, Monroe County, WV, Nicholas County, WV, Pendleton County, WV, Pocahontas County, WV, Preston County, WV, Raleigh County, WV, Randolph County, WV, Summers County, WV, Taylor County, WV, Tucker County, WV, Upshur County, WV, Webster County, WV, Wyoming County, WV

The radar

The Charleston,WV radar (KRLX), 107 km from the middle of the area, began a volume at 22:56 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

Roanoke, VA (KRNK), launched 12:00Z, 11.0 hours before the alert went out and 159 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, Roanoke, VA at 12:00Z on 2003-07-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 173 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, Roanoke, VA at 12:00Z on 2003-07-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 23 square meters per square second.1939Sfc1 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
173 J/kg
Mixed-layer CIN
-59 J/kg
Mixed-layer LCL
624 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
23 m²/s²
0-3 km storm-relative helicity
86 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.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 10, 3:45 PM EDTSevere Thunderstorm WatchSPCAllegany, Garrett6 hr
Jul 10, 6:50 PM EDTSevere Thunderstorm WatchSPCMontgomery6 hr
Jul 10, 10:20 AM EDTMesoscale DiscussionSPCLee, Scott85 min
Jul 10, 11:20 AM EDTSevere Thunderstorm WatchSPCCity of Bristol7 hr
Jul 10, 5:38 PM EDTMesoscale DiscussionSPCLee, Scott, City of Bristol37 min
Jul 10, 6:25 PM EDTMesoscale DiscussionSPCAlbemarle, Alleghany, Amelia, Amherst, Appomattox, Augusta and 51 more65 min

Nearby

Mesoscale Discussions in West Virginia, 2003Mesoscale Discussions in Virginia, 2003Mesoscale Discussions in Pennsylvania, 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.