
	Where results make sense

Topic: Squall line

Related Topics

Weather front

Thunderstorm

Mesocyclone

Tornado

Windstorm

Library of Congress

Library of Congress Living Legend

In the News (Sun 20 Dec 09)

Northern Trust

Marvin Harrison

Peter Chernin

Gary Locke

Match Play

Penelope Cruz

Mickey Rourke

AR Rahman

Danny Boyle

Hugh Jackman

	Squall - Wikipedia, the free encyclopedia (Site not responding. Last check: 2007-10-21)
		A squall or squall line is an organized line of thunderstorms.
		Most commonly, independent squalls occur along front lines, and may contain heavy precipitation, hail, frequent lightning, dangerous straight line winds, and possibly funnel clouds, tornadoes and waterspouts.
		In the Pacific Northwest, a squall is a short but furious rainstorm with strong winds, often small in area and moving at high speed, especially as a maritime term.
	en.wikipedia.org /wiki/Squall_line (132 words)

	Multicell Lines: also known as squall lines
		Multicell line storms consist of a line of storms with a continuous, well developed gust front at the leading edge of the line.
		Flash floods occasionally occur when the squall line decelerates or even becomes stationary, with thunderstorms moving parallel to the line and repeatedly across the same area.
		Squall lines with a confirmed severe weather history allow for the issuance of reliable warnings.
	ww2010.atmos.uiuc.edu /(Gh)/guides/mtr/svr/type/mline/home.rxml (189 words)

	SKYWARN Storm Spotter Guides Online (Site not responding. Last check: 2007-10-21)
		The multicell line storm, or squall line is it is more commonly called, consists of a long line of storms with a continuous, well-developed gust front at the leading edge of the line.
		The squall line is a solid or broken line of thunderstorms with a continuous, well-developed gustfront on the leading edge.
		It is a group of multicell storms, often dominated by a vigorous squall line on the downwind (east) side and a number of weaker multicell cluster storms in the interior.
	spotterguides.us /advanced/advanced05.htm (3394 words)

	Midlatitude Squall Line Propagation and Structure as Numerically Simulated by a 3-D Nonhydrostatic Stormscale Mode (Site not responding. Last check: 2007-10-21)
		The squall mesohigh is located behind the convective line and is associated with the hydrostatic effect of cold pool and the nonhydrostatic effect of downdrafts impinging on the ground.
		New cells are regenerated along the gust front and at the southern end of the squall line (not shown), and move rearward relative to the gust front.
		Vertical cross section of the east-west component of wind (contours, 3.0 m/s interval) relative to the moving squall line, and the simulated total water (shaded, in g/kg) at 0300 UTC 8 May. The surface gust front location is marked by a cold front symbol.
	www.caps.ou.edu /ARPS/papers/98NWP3.html (2475 words)

	Types of Severe Storms - Squall Lines (Site not responding. Last check: 2007-10-21)
		A squall line may be thought of as any line of convective cells.
		Squall lines are usually composed of a series of ordinary cells spread along and behind the leading edge of the system.
		Behind the leading edge of the squall line is often an extensive region of stratiform precipitation.
	apollo.lsc.vsc.edu /classes/met130/notes/chapter15/squall_lines.html (125 words)

	Radar Project
		A squall line was observed by the eastern lobe of the CSU-CHILL and Pawnee dual-Doppler radar network on 2 August 2001 in northeastern Colorado.
		This analysis showed that the squall line exhibited many features similar to previously observed squall lines in both the midlatitudes and the tropics, including a leading line of convection followed by a trailing stratiform region with periodic bright band signatures in the reflectivity field.
		Based upon its reflectivity pattern, the early stages of the storm were characterized by a line of convective cells, which evolved into a fairly organized squall line with a trailing stratiform region by 0146 UTC 2 August (Fig.
	olympic.atmos.colostate.edu /~saraht/radarproject.html (3646 words)

	1
		Squall lines are often accompanied by a region of stratiform precipitation.
		Some squall lines are trailed by a region of stratiform precipitation, and the relation between the two components of such a system appears to be symbiotic, hence this configuration is often long-lived.
		Some squall lines are bow-shaped, with a 'book-end vortex' at one or both ends of the bow.
	www-das.uwyo.edu /~geerts/atsc2000/archive/97spr/test3.html (1044 words)

	UW-Madison Satellite Meteorology: Squall Line (Site not responding. Last check: 2007-10-21)
		A squall line is composed of individual intense thunderstorm cells arranged in a line, or band.
		Squall lines often have life spans of approximately 6 to 12 hours and extend across several states simultaneously.
		Strong environmental wind shear causes the updraft to be tilted and separated from the downdraft in squall-line thunderstorms.
	itg1.meteor.wisc.edu /wxwise/satmet/lesson10/squall_line.html (84 words)

	The Superstorm Subtropical Derecho
		The squall line reached the northern portion of the west coast of Florida and western Cuba between 11 PM and midnight EST on the evening of the 12th.
		As the derecho producing squall line raced through Florida, 7 people were killed and 79 were injured from the strong derecho winds and embedded tornadoes.
		As the derecho producing squall line crossed Cuba and adjacent waters during the morning hours of March 13th, there were two bands of very intense wind gusts (Fig.
	www.spc.noaa.gov /misc/AbtDerechos/casepages/mar12-131993page.htm (655 words)

	1996.NWP.donghai.paper - Title (Site not responding. Last check: 2007-10-21)
		In order to better understand the initiation, structure and evolution of these squall lines, and at the same time validate the model, we conducted a set of sensitivity experiments for this case using data archived during the forecast experiment.
		From 21Z May 7 to 00Z May 8, a pre-squall mesolow and a squall mesohigh associ-ated with the second squall line, were clearly identified by the Oklahoma Mesonet data, especially with in the middle portion of the line where a supercell storm was located.
		Smull, B. F., and R. Houze, Jr., 1985: A midlatitude squall line with a trailing region of stratiform rain: Radar and satellite observations.
	www.caps.ou.edu /Papers/1996.NWP.wang.html (1852 words)

	IPEX IOP4
		The line was determined to be moving across southern Idaho at an average rate of approximately 50 kts, while it moved across northern NV and northern UT at approximately 40 kts.
		In order to examine the structure of this squall line and compare it to current conceptual models in the literature, I have analyzed a cross section perpendicular to the squall line, as well as cross sections that are at slight angles (~15 degrees) to the perpendicular cross section.
		For example, the cross section that was taken along the 135 degree line shows absolute outbound velocities rearward of the squall line, implying either strong front-rear flow or a southwesterly component to the wind.
	www.met.utah.edu /jimsteen/jacox/iop4.html (3522 words)

	[No title] (Site not responding. Last check: 2007-10-21)
		Discussion: The derecho event of 30-31 May 1998 began as a squall line of strong/severe thunderstorms over portions of Minnesota and eastern South Dakota during the mid-afternoon hours of 30 May. The event became defined as a "derecho" when it began producing strong (>55 mph) straight-line surface winds for a period greater than 6 hours.
		Once the severe squall line had formed, several interesting meteorological interactions (on the meso- and synoptic scale) occurred to the squall line over the next several hours, into the late evening hours, as it moved over Minnesota and portions of northern Iowa.
		The forward speed of the squall line increased to 60-65 mph by 2 am when the portion of the line from Madison north began producing surface winds between 65 and 100+ mph.
	cimss.ssec.wisc.edu /smrwkshp/1998/case/discussion.txt (428 words)

	MCS Module Section Summaries (Site not responding. Last check: 2007-10-21)
		Squall lines may either be triggered as a line, or organize into a line from a cluster of cells
		Squall line motion is a result of both the advection of individual cells within the line and discrete propagation due to the triggering of new cells
		In squall lines > 200 km (110 nm) long, individual cells may move at an angle to the line, but the net motion of the line is constrained to be perpendicular to its initial orientation
	meted.ucar.edu /convectn/mcs/summarys.htm (3802 words)

	TRMM
		This particular overpass occurred at 5:16 pm EDT as the line of menacing storms was producing numerous episodes of damaging hail, strong winds and tornadoes.
		The colors indicate the relative height of the rain cells (30 dBZ echo surface) embedded within the squall line, with reds indicating cell tops in the range of 13-16 km.
		Textbook squall line precipitation structure is evident, with a tall, leading line of heavy convective towers, a well-defined transition region of light rain, and the broad, shallow region of trailing stratiform rain.
	trmm.gsfc.nasa.gov /publications_dir/may_sixth.html (299 words)

	Doubled-domain run
		This case was a repeat of an earlier experiment but with a doubled along-line domain size to test the impact of the periodic boundaries (which impose a scale) on the simulated convection.
		The squall line is oriented north-south, and the view is from southeast to northwest.
		Small random temperature perturbations were placed, and along a cold front in the middle of the domain a series of storms formed, becoming the squall line you see here.
	redrock.ncsa.uiuc.edu /~jewett/wk94/nest70n32x/images.html (483 words)

	Squall Line with Mesoscale Convective Vortex
		The images and animations shown here represent visualizations of a squall line with a mesoscale convective vortex (MCV) using data generated by the Klemp-Wilhelmson numerical model.
		The squall line is evolving in an environment of moderate vertical windshear with winds increasing by 20 m/s between the ground and 2.5 KM above ground.
		The red spheres are released at an elevation of 500 meters in front of the storm, and the blue spheres are released at 3 km behind the storm.
	www.vets.ucar.edu /vg/MCV/index.shtml (462 words)

	NSSL Bow Echo Case Study - Bismark (KBIS) - 101197 (Site not responding. Last check: 2007-10-21)
		The leading edge of the squall line did not show a persistently strong reflectivity gradient nor any sign that the storms were strongly undercut by outflow.
		The individual storms that formed the squall line can be picked out more easily aloft on the 4 Panel image.
		The squall line proceeded to merge with a supercell, but even this did not produce a strong bow-echo such as it did in the ktlx-120299 case.
	www.nssl.noaa.gov /~pburke/kbis-101197/case.html (212 words)

	Jesse Enloe \| Papers \| Graduate Papers \| Radar Analysis of the 19 April 1995 Dallas/Fort Worth, Texas Tornado-Producing ...
		A squall line is defined as a line of active thunderstorms, either continuous or with breaks, including contiguous precipitation areas resulting from the existence of the thunderstorms (Glickman 2000).
		The squall line is a type of mesoscale convective system (MCS) with a convective area of five to ten km in width and a length of at least five times its width.
		As the squall line progressed eastward it continued producing large amounts of precipitation and hail indicated by the algorithm output.
	www.coaps.fsu.edu /~enloe/Papers/Grad/squall_line.html (1714 words)

	June 2, 2004: Squall line and MCS
		During the afterenoon of June 2, 2004, a young W-E oriented squall line with intense precipitaion cores passed KOUN from the North.
		At the same time, a new squall line/MCS-combo had formed to the WSW of KOUN, that moved towards the E, and merged with the other squall line (that had become a region of stratiform precipitation by now).
		Still some convective cells can be found on the old squall line ahead of the convective line of the seconds MCS.
	www.cimms.ou.edu /~heinsel/www/20040602.html (595 words)

	The Classical Squall Line (page 2) (Site not responding. Last check: 2007-10-21)
		1) reveals surface convergence ahead of the cold pool, which is consistent with a conceptual model of long-lived mid-latitude squall lines (Rotunno et al.
		Although such a squall line is not a ubiquitous feature of STORM, this model does not preclude the possibility of such a squall line in the high-CAPE air east of the drytrough.
		However, the STORM conceptual model does preclude the use of the term "warm-sector squall line", since that region is not viewed as a true warm sector in STORM.
	www-k12.atmos.washington.edu /~johnl/storm/clsq2.html (238 words)

	[No title]
		A north-south oriented squall line storm developed west of a line from Limon to Akron CO. The line advected slowly eastward, with short-lived cells within the line advecting northeastward.
		Both of these complexes as well as the western squall line produced outflows that were expected to collide somewhere within the triple-Doppler triangle.
		The line and all other echoes were covered with multi-elevation angle surveillance scans with RHIs every 5-10 deg along the line.
	www.mmm.ucar.edu /pdas/Ops-journal/ops-0703.html (481 words)

	Encyclopedia: Squall line (Site not responding. Last check: 2007-10-21)
		A squall or squall line is a line of thunderstorms with a common leading convection line, or mesocyclone, which tends to create a powerful gust front.
		Most commonly, independent squalls occur along front lines, and may contain heavy precipitation, hail, frequent lightning, dangerous straight line winds, and possibly tornadoes and waterspouts.
		Click for other authoritative sources for this topic (summarised at Factbites.com).
	www.nationmaster.com /encyclopedia/Squall-line (133 words)

	[No title] (Site not responding. Last check: 2007-10-21)
		Doppler analysis of part of the squall line reveals four convective cells in the line, developing cells ahead of the line, a trailing precipitation region, and a convective rainband at the western edge of the system.
		Horizontal, line-relative flow perpendicular to the squall line and within the trailing precipitation area is from east to west (front to back) at all levels, weakening with height.
		A conceptual model is developed for 19 May 1977 and is compared to conceptual models of tropical squall lines and of the 22 May 1976 Oklahoma squall line.
	www.rap.ucar.edu /staff/kessinge/cjk_jas1987a.html (293 words)

	KOUN Beam Attenuation Case Study
		In the second case, the beam was gradually attenuated as the radar scanned down the length of a squall line.
		While most of the rainy region behind the squall line exhibits uniform differential reflectivity values between 0.5 and 1 dB, a sector of values as low as -1.5 dB is present behind the severe cell.
		Later in the MCS event (Figure 2), the radar beam is aligned with the major axis of the squall line.
	www.cimms.ou.edu /~kscharf/pol/15jun02 (908 words)

	Tornadogenesis via Squall Line and Supercell Interaction: The November 15, 1989, Huntsville, Alabama, Tornado (Site not responding. Last check: 2007-10-21)
		A particularly noteworthy feature of the squall line at 2100 UTC is the bulge (bow echo) appearing over northwest Alabama (Plate 1b).
		Buechler and Goodman [1988] have previously documented an increase in the frequency and density of positive polarity cloud-to-ground discharges in association with the arrival of downdrafts at the surface emanating from long-lived microburst-producing storms.
		In summary, the squall line was associated with initially intense convection that decreased in strength (but was still severe) after 2200 UTC, prior to intersection with the supercell storm.
	www.srh.noaa.gov /bmx/nov151989/paper/page7.html (572 words)

	[No title] (Site not responding. Last check: 2007-10-21)
		Mechanisms for maintenance of the strong convection along the leading edge of a broad squall line that occurred in Oklahoma on 19 May 1977 are investigated.
		It is found that at a preferred location along the squall line, an area of intense convection is maintained over a long time period.
		These showers, due to their differing motion from elements within the main line, merge with the line to the north of the mesolow, resulting in maintenance of the strong area of convection.
	www.rap.ucar.edu /staff/kessinge/cjk_jas1987b.html (409 words)

	Mozilla Dominates Squall Line, 7-1
		The game was against Squall Line, which Mozilla has had a checkered past with.
		Squall Line after this got their only goal of the game.
		Squall Line s.o.g: 8 in 1st, 4 in 2nd = 12 total.
	people.netscape.com /ssu/hockey/games/copper-031099.html (352 words)

	East Tennessee squall line on May 5-6, 1999 (Site not responding. Last check: 2007-10-21)
		Also contributing to strength of the Squall Line was the wind shear in the atmosphere.
		Strong to severe winds, a severe wind is 58 mph or greater, were occurring along the squall line at this time.
		This is commonly known as the "gust front", and may be the first part of the squall line that you experience.
	www.srh.noaa.gov /mrx/svrevnts/may05winds/May0599.html (771 words)

	1991: Monthly Weather Review, 119(12), 3012-3033
		The model produces a back-building squall line ahead of the surface cold front, as would be expected based on an analysis of the pre-squall-line environment.
		The simulated squall line compares favorably both with observations and with a higher-resolution model simulation in an environment of similar shear, suggesting that the 5-km horizontal resolution is adequately representing the significant features of the squall line.
		The major shortcoming of this study is the failure of the cloud model to produce the observed squall line at the proper time.
	www.gfdl.noaa.gov /reference/bibliography/1991/rsh9101.html (337 words)

Try your search on: Qwika (all wikis)