Alert archive / Iowa / Mesoscale Discussions in 2003

Mesoscale Discussion 1151

May 30, 20037 states

The Storm Prediction Center issued this mesoscale discussion at May 30, 2003, 1:06 PM MDT for 7 states. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
May 30, 2003, 1:06 PM MDT (19:06 UTC)
Expired
May 30, 2003, 3:30 PM MDT
In force
2 hr
Issued by
the Storm Prediction Center
All 58 counties

Benton County, IA, Boone County, IA, Carroll County, IA, Cedar County, IA, Clinton County, IA, Crawford County, IA, Greene County, IA, Iowa County, IA, Jackson County, IA, Jasper County, IA, Johnson County, IA, Jones County, IA, Linn County, IA, Marshall County, IA, Monona County, IA, Poweshiek County, IA, Scott County, IA, Story County, IA, Tama County, IA, Bannock County, ID, Bear Lake County, ID, Bingham County, ID, Blaine County, ID, Butte County, ID, Camas County, ID, Clark County, ID, Custer County, ID, Elmore County, ID, Gooding County, ID, Jefferson County, ID, Jerome County, ID, Lemhi County, ID, Lincoln County, ID, Minidoka County, ID, Power County, ID, Boone County, IL, Carroll County, IL, Ogle County, IL, Stephenson County, IL, Whiteside County, IL, Winnebago County, IL, Beaverhead County, MT, Antelope County, NE, Box Butte County, NE, Burt County, NE, Cuming County, NE, Madison County, NE, Pierce County, NE, Stanton County, NE, Thurston County, NE, Wayne County, NE, Wheeler County, NE, Dane County, WI, Green County, WI, Jefferson County, WI, Rock County, WI, Walworth County, WI, Lincoln County, WY

The radar

The Riverton/Lander radar (KRIW), 90 km from the middle of the area, began a volume at 19:10 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Riverton, WY (KRIW), launched 12:00Z, 7.1 hours before the alert went out and 85 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 2003-05-30Temperature 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 2003-05-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 31 square meters per square second.193958Sfc1 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
2797 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
31 m²/s²
0-3 km storm-relative helicity
45 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
May 29, 8:25 PM MDTMesoscale DiscussionSPCBonneville, Caribou, Fremont, Madison, Teton65 min
May 30, 8:29 AM MDTMesoscale DiscussionSPCBannock, Bingham, Blaine, Bonneville, Butte, Camas and 13 more2 hr
May 30, 9:00 AM MDTSevere Thunderstorm WatchSPCAda, Blaine, Boise, Camas, Canyon, Cassia and 10 more5 hr
May 30, 11:46 AM MDTMesoscale DiscussionSPCBannock, Bingham, Blaine, Butte, Camas, Cassia and 12 more119 min
May 30, 12:35 PM MDTSevere Thunderstorm WatchSPCBingham, Blaine, Boise, Butte, Camas, Cassia and 12 more6 hr
May 30, 2:18 PM MDTMesoscale DiscussionSPCBingham, Butte, Cassia, Jefferson, Jerome, Minidoka and 2 more117 min
May 30, 5:28 PM MDTMesoscale DiscussionSPCAda, Bingham, Blaine, Boise, Butte, Camas and 13 more92 min
May 30, 3:32 AM MDTMesoscale DiscussionSPCCarroll, Henderson, Henry, Jo Daviess, Mercer, Rock Island and 3 more58 min
May 30, 1:08 PM MDTMesoscale DiscussionSPCBoone, Carroll, Ogle, Stephenson, Whiteside, Winnebago3 hr
May 30, 2:45 PM MDTTornado WatchSPCBoone, Bureau, Carroll, DeKalb, Fulton, Henry and 23 more5 hr
May 30, 5:55 PM MDTMesoscale DiscussionSPCBoone, Bureau, Carroll, DeKalb, Fulton, Henry and 21 more95 min
May 30, 4:05 PM MDTSevere Thunderstorm WatchSPCBanner, Box Butte, Cheyenne, Dawes, Deuel, Kimball and 3 more6 hr
May 29, 9:46 PM MDTMesoscale DiscussionSPCBurnett, Douglas, Washburn89 min
May 29, 10:30 PM MDTSevere Thunderstorm WatchSPCBurnett, Douglas, Washburn6 hr
May 30, 12:23 AM MDTMesoscale DiscussionSPCBurnett, Douglas, Washburn67 min
May 30, 4:54 PM MDTMesoscale DiscussionSPCAdams, Brown, Calumet, Clark, Forest, Juneau and 16 more96 min
May 30, 1:20 PM MDTMesoscale DiscussionSPCLaramie2 hr

Nearby

Mesoscale Discussions in Iowa, 2003Mesoscale Discussions in Idaho, 2003Mesoscale Discussions in Nebraska, 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.