Alert archive / Nebraska / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 159, NWS Hastings, NE

June 18, 2001Fillmore County, Nebraska

NWS Hastings, NE issued this severe thunderstorm warning at Jun 18, 2001, 9:47 PM CDT for Fillmore County, Nebraska. It was in force for 43 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 18, 2001, 9:47 PM CDT (02:47 UTC)
Expired: Jun 18, 2001, 10:30 PM CDT
In force: 43 min
Issued by: NWS Hastings, NE
Area: Whole counties

County Fillmore County, NE

The radar

The Grand Island radar (KUEX), 75 km from the middle of the area, began a volume at 02:46 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 watch it was issued in

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

Issued	Product	Office	Lasted
Jun 18, 5:30 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 2.8 hours before the alert went out and 136 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2637 J/kg
Mixed-layer CIN: -44 J/kg
Mixed-layer LCL: 2202 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 65 m²/s²
0-3 km storm-relative helicity: 346 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 16.5

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 Hastings, NE wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 18, 2:10 PM CDT, 7 hours 37 minutes earlier.

Area forecast discussion, Jun 18, 2:10 PM CDT, 7 hours 37 minutes before

SOUTH CENTRAL NEBRASKA/NORTH CENTRAL KANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HASTINGS NE
210 PM CDT MON JUN 18 2001

CDFNT PROGRESSING ACRS NWRN NEB THIS AFTN WITH PREFRONTAL TROF AND
DRYLINE OVR SWRN NEB/WRN KS.  STATIONARY FRONT/850 SHEAR AXIS FM SRN
MN...ACRS IA ...THRU THE SRN ZONES OF THE GID CWA IS THE FIRST AREA
OF SVR CONCERN AS THE 13 TO 15 DEG C CAP AT 700 MB ON THE MRNG UAA
WL BE ERODED WITH APPCHG THERMAL TROF AS WELL AS STEADY
FRONTOGENETICAL FORCING.  LAPS CAPES WERE APPROACHING 3K J/KG AS OF
18Z FOR ZONES TO THE E OF ROUTE 281...WHERE SFC DPS ARE ABOUT 10 DEG
HIGHER THAN WRN ZONES.  MID LVL LAPSE RATES ARE 8-9 C/KM...SO
ANYTHING THAT DOES POP WL PROBABLY GO RAPIDLY SVR.  WL STAY WITH
LIKELY POPS NR THIS BOUNDARY...WHICH WL REQUIRE A REORIENTATION OF
THE ZONES.  EXPECT WIND ADVISORY CONDITIONS TO SAG S/EWD WITH
BOUNDARY.  WINDY MENTION SHOULD HANDLE THE SOON-TO-BE-FORMER-
ADVISORY ZONES.

OVRNGT...SD LOW WL MOV EWD AND DRAG THE CDFNT THRU THE AREA.  WL
MAINTAIN CHC POPS FOR THE FRONTAL PASSAGE.  ONGOING TEMPS IN THE MID
50S N TO ARND 60 S LK OK...AND ARE SPPRTED BY A SPLIT-GUIDANCE
APPROACH.

TUE AND WED...SWD PROGRESS OF FRONT WL DEFINE ALL...FOR NOW...
CDFNT WL SAG INTO KANSAS ON TUE BEFORE STALLING AS LOW DVLPS OVR
SWRN KS.  POPS WL BE REQUIRED BY TUE NGT...MAINLY FOR THE SRN CWA AS
ERLY FLOW DVLPS AND IS SPPRTED BY PROGGED DVRGNC IN THE RRQ.  LAPSE
RATES ARE NOT THAT IMPRESSIVE...THUS SHRA WORDING WITH TSTMS.  IN
GENL FOR THE AREA...TEMPS WL SPLIT GUIDANCE BUT WITH RANGE REDUCED
ON WED WITH SOME LLVL CLDINESS AS PER RTNG DPS/LOW COND PRES DEFS.

IN THE EFP...MRF/CANADIAN AND SUPPORTING CAST OF MDLS CONT TO
PRODUCE THE BLDG RIDGE SOLN.  WL MAINTAIN THE DRY TREND AS THE
FRONT IS PUSHED SWD...BUT BREAK UP THE CURRENT PROG FOR WARMING
TEMPS WITH ABOVE SEASONAL NMBRS FOR THE WEEKEND.

.GID...NONE.

09

In the hours before

Local storm report, Jun 18, 6:20 PM CDT, 3 hours 27 minutes before

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The office that day

Everything else NWS Hastings, NE issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 18, 11:32 PM CDT	Severe Thunderstorm Warning	GID	Fillmore	43 min
Jun 18, 9:19 PM CDT	Severe Thunderstorm Warning	GID	Rooks	56 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2001 Every severe thunderstorm warning in 2001

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.