Alert archive / Texas / Mesoscale Discussions in 2010

Mesoscale Discussion 608

May 18, 20104 counties in New Mexico; Cimarron County, Oklahoma; 24 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 18, 2010, 1:02 PM MDT for 4 counties in New Mexico; Cimarron County, Oklahoma; 24 counties in Texas. It was in force for 118 min.

The area

The outline as issued.

The facts

Issued
May 18, 2010, 1:02 PM MDT (19:02 UTC)
Expired
May 18, 2010, 3:00 PM MDT
In force
118 min
Issued by
the Storm Prediction Center
All 29 counties

Curry County, NM, Harding County, NM, Quay County, NM, Union County, NM, Cimarron County, OK, Armstrong County, TX, Bailey County, TX, Briscoe County, TX, Carson County, TX, Castro County, TX, Childress County, TX, Dallam County, TX, Deaf Smith County, TX, Donley County, TX, Floyd County, TX, Gray County, TX, Hale County, TX, Hall County, TX, Hartley County, TX, Hutchinson County, TX, Lamb County, TX, Moore County, TX, Motley County, TX, Oldham County, TX, Parmer County, TX, Potter County, TX, Randall County, TX, Sherman County, TX, Swisher County, TX

The radar

The Amarillo radar (KAMA), 57 km from the middle of the area, began a volume at 19:01 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 watches that followed

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

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 7.0 hours before the alert went out and 58 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, Amarillo Airport, TX at 12:00Z on 2010-05-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 95 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, Amarillo Airport, TX at 12:00Z on 2010-05-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 78 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
95 J/kg
Mixed-layer CIN
-247 J/kg
Mixed-layer LCL
840 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
78 m²/s²
0-3 km storm-relative helicity
160 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

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 17, 6:23 PM MDTMesoscale DiscussionSPCColfax, De Baca, Guadalupe, Harding, Mora, Quay and 2 more67 min
May 17, 8:18 PM MDTMesoscale DiscussionSPCColfax, Curry, Harding, Quay, Union87 min
May 18, 2:05 PM MDTMesoscale DiscussionSPCCurry, Harding, Quay, Union55 min
May 18, 2:37 PM MDTTornado WatchSPCColfax, Guadalupe, Harding, Mora, Quay, San Miguel and 1 more7 hr
May 17, 6:46 PM MDTMesoscale DiscussionSPCAtascosa, Austin, Bandera, Bastrop, Bexar, Blanco and 52 more89 min
May 17, 8:57 PM MDTSevere Thunderstorm WatchSPCAransas, Atascosa, Bee, Brazoria, Calhoun, Colorado and 26 more7 hr
May 17, 10:06 PM MDTMesoscale DiscussionSPCBandera, Edwards, Kerr, Real, Val Verde54 min
May 18, 12:23 AM MDTMesoscale DiscussionSPCDimmit, La Salle, Maverick, Webb, Zavala97 min
May 18, 4:32 AM MDTMesoscale DiscussionSPCBrooks, Cameron, Duval, Hidalgo, Jim Hogg, Kenedy and 3 more88 min
May 18, 5:11 AM MDTSevere Thunderstorm WatchSPCBrooks, Cameron, Duval, Hidalgo, Jim Hogg, Jim Wells and 5 more5 hr
May 18, 8:07 AM MDTMesoscale DiscussionSPCCameron, Hidalgo, Kenedy, Willacy83 min
May 18, 2:03 PM MDTMesoscale DiscussionSPCBrewster, Crockett, Irion, Midland, Reagan, Terrell and 2 more117 min
May 18, 4:05 PM MDTMesoscale DiscussionSPCAndrews, Bailey, Borden, Briscoe, Castro, Cochran and 17 more85 min

Nearby

Mesoscale Discussions in Texas, 2010Mesoscale Discussions in New Mexico, 2010Mesoscale Discussions in Oklahoma, 2010Every mesoscale discussion in 2010

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.