Alert archive / Kansas / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 121, NWS Wichita, KS

June 1, 1999McPherson County, Saline County, Kansas

NWS Wichita, KS issued this severe thunderstorm warning at Jun 1, 1999, 2:24 AM CDT for McPherson County, Saline County, Kansas. It was in force for 51 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Jun 1, 1999, 2:24 AM CDT (07:24 UTC)
Expired
Jun 1, 1999, 3:15 AM CDT
In force
51 min
Issued by
NWS Wichita, KS
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties McPherson County, KS, Saline County, KS

The radar

The Wichita radar (KICT), 105 km from the middle of the area, began a volume at 07:24 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.

What was reported inside it

TimeReportWhereRemark
Jun 1, 2:46 AM CDTThunderstorm Wind 53Mc Pherson, KS

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
May 31, 9:45 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 7.4 hours before the alert went out and 180 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, Topeka, KS at 00:00Z on 1999-06-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 564 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, Topeka, KS at 00:00Z on 1999-06-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 85 square meters per square second.19395878Sfc1 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
564 J/kg
Mixed-layer CIN
-167 J/kg
Mixed-layer LCL
963 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
85 m²/s²
0-3 km storm-relative helicity
191 m²/s²
Significant tornado parameter
0.1
Supercell composite
2.4

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Wichita, KS wrote its last area forecast discussion before this severe thunderstorm warning went out at May 31, 4:00 PM CDT, 10 hours 24 minutes earlier.

Area forecast discussion, May 31, 4:00 PM CDT, 10 hours 24 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE WICHITA KS
400 PM CDT MON MAY 31 1999

TNGT:
HIGH-SCORING BALLGAME SLATED ALL AREAS, ESPECIALLY CNTRL & SC KS, AS
COLD FRONT DRAPED W-E ACRS NRN KS SAGS S INTO CNTRL KS TOWARD RICHER
SFC-850MB MSTR. WITH STRENGTHENING 500-300MB S/W VENTURING E OVR WRN
PLNS DIRECTIONAL SHEAR REMAINS DEEP AND PRONOUNCED. AS DISCUSSED IN
SWODY1, SUPERCELLULAR CONVECTION LIKELY, WARRANTING CONTD POSSIBLY
SEVERE DESCRIPTOR ALL AREAS WITH POPS INCRD TO 80% ALL SXNS. HRLY &
3-HRLY FFGS IN 1.0-1.5 RANGE W/ PWS OF 150-180% NORMAL ALL WARRANT
FLASH FLOOD WATCH ALL BUT NW CORRIDOR. MOS MINS LOOK KOSHER.

TUE:
COLD FRONT NEARLY STALLING SW-NE ACRS KS EARLY IN MRNG TO SURGE E AS
UPSTAIRS S/W EJECTS E ACRS KS. POP FCST TO REFLECT THIS I.E. KEEPING
HIGHEST POPS SE (60%) W/ EMPHASIS ON MRNG, 40% ERN 1/2 CNTRL & SC KS
W/ NW CORRIDOR DRY. CLEARING SKIES IN WAKE OF FRONTAL PASSAGE COUPLED
WITH ONSET OF DOWNSLOPE COMP TO ENABLE MAXES TO REACH MOS LVLS CNTRL
& SC SXNS WITH FWC UNDERCUT SLGTLY SE.

TUE NGT:
MOCLEAR WX SLATED ALL AREAS AS AMPLIFYING UPSTAIRS RIDGE APPROACHES.
HWVR, ABUNDANT RESIDUAL MSTR & WEAKENING SFC GRAD WARRANTS MENTION
OF BR DVLPMT TOWARD MRNG ALL BUT NW CORRIDOR. FAN AND FWC MATCHING ON
MINS & FOLLOWED THIS GUID.

WED:
MOISTENING SE FLOW RETURNS IN RESPONSE TO RAPIDLY DEEPENING WRN PLNS
SFC-850 MB TROF. HWVR, N-S ORIENTED UPSTAIRS RIDGE PRECLUDES ANY CHC
FOR PCPN SO WL GO W/ DRY FCST ALL AREAS. RESIDUAL MSTR TO BE SUFF TO
POP CU BY EARLY AFTN THUS WARRANTING BIAS TOWARD COOLER FAN SOLU-
TION ALL BUT NW CORRIDOR WHERE IN CLOSER PROXIMITY TO STRONG 850-MB
THERMAL RIDGE.
ES

COORD: TOP, SGF, DDC.

FCSTID = 4
ICT   63  83  61  84 /  80  30   0   0
HUT   63  83  60  84 /  80  30   0   0
EWK   63  83  60  84 /  80  30   0   0
EQA   63  83  61  84 /  80  30   0   0
WLD   63  83  61  84 /  80  30   0   0
RSL   60  81  58  87 /  80   0   0   0
GBD   60  81  58  87 /  80   0   0   0
SLN   60  83  59  86 /  80  40   0   0
MPR   60  83  59  86 /  80  40   0   0
CFV   65  82  60  83 /  80  60   0   0
CNU   65  82  60  83 /  80  60   0   0
K88   65  82  60  83 /  80  60   0   0

.ICT...FLASH FLOOD WATCH FOR TONIGHT FOR ZONES KSZ049...KSZ051>053
...KSZ067>072...KSZ082>083...KSZ091>096...KSZ098>100.

In the hours before

Special weather statement, May 31, 11:36 PM CDT, 2 hours 48 minutes before
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Local storm report, May 31, 11:50 PM CDT, 2 hours 34 minutes before
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Local storm report, May 31, 11:50 PM CDT, 2 hours 34 minutes before
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Special weather statement, May 31, 11:59 PM CDT, 2 hours 25 minutes before
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    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
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      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
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Special weather statement, May 31, 11:59 PM CDT, 2 hours 25 minutes before
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<head>
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The office that day

Everything else NWS Wichita, KS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 31, 7:45 PM CDTSevere Thunderstorm WarningICTRussell45 min
May 31, 8:27 PM CDTTornado WarningICTRussell63 min
May 31, 8:50 PM CDTSevere Thunderstorm WarningICTLincoln55 min
May 31, 9:31 PM CDTSevere Thunderstorm WarningICTEllsworth59 min
May 31, 10:04 PM CDTSevere Thunderstorm WarningICTSaline56 min
May 31, 10:45 PM CDTTornado WarningICTSaline45 min
May 31, 11:00 PM CDTFlash Flood WarningICTSaline2 hr
Jun 1, 1:09 AM CDTSevere Thunderstorm WarningICTRussell66 min
Jun 1, 1:23 AM CDTSevere Thunderstorm WarningICTBarton, Ellsworth67 min
Jun 1, 1:23 AM CDTSevere Thunderstorm WarningICTLincoln67 min
Jun 1, 1:49 AM CDTSevere Thunderstorm WarningICTRice56 min

Nearby

Severe Thunderstorm Warnings in Kansas, 1999Every severe thunderstorm warning in 1999

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.