Alert archive / Nebraska / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 190, NWS Hastings, NE

August 4, 20024 counties in Nebraska

NWS Hastings, NE issued this severe thunderstorm warning at Aug 4, 2002, 7:39 PM CDT for 4 counties in Nebraska. It was in force for 66 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Aug 4, 2002, 7:39 PM CDT (00:39 UTC)
Expired
Aug 4, 2002, 8:45 PM CDT
In force
66 min
Issued by
NWS Hastings, NE
Area
Counties, with a storm outline in the text

Counties Greeley County, NE, Howard County, NE, Merrick County, NE, Nance County, NE

What was reported inside it

TimeReportWhereRemark
Aug 4, 7:50 PM CDTThunderstorm Wind 52 EWolbach, NE

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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 0.7 hours before the alert went out and 167 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, Omaha, NE at 00:00Z on 2002-08-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3763 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, Omaha, NE at 00:00Z on 2002-08-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 137 square meters per square second.1939Sfc1 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
3763 J/kg
Mixed-layer CIN
-57 J/kg
Mixed-layer LCL
1412 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
137 m²/s²
0-3 km storm-relative helicity
195 m²/s²
Significant tornado parameter
1.0
Supercell composite
10.7

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

760 
WUUS53 KGID 050039
SVRGRI
NEC077-093-121-125-050145-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HASTINGS NE
738 PM CDT SUN AUG 4 2002

THE NATIONAL WEATHER SERVICE IN HASTINGS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  GREELEY COUNTY IN CENTRAL NEBRASKA
  NORTHEAST HOWARD COUNTY IN CENTRAL NEBRASKA
  NORTHWESTERN MERRICK COUNTY IN CENTRAL NEBRASKA
  NANCE COUNTY IN CENTRAL NEBRASKA

* UNTIL 845 PM CDT

* AT 735 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM COTESFIELD TO 4 MILES WEST OF
  ARCHER...OR FROM 34 MILES NORTHWEST OF GRAND ISLAND TO 18 MILES
  NORTHEAST OF GRAND ISLAND...MOVING NORTHEAST AT 20 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  CUSHING AT 745 PM CDT
  WOLBACH AT 755 PM CDT
  GREELEY AT 810 PM CDT
  FULLERTON AT 820 PM CDT
  BELGRADE AT 835 PM CDT

HOWARD COUNTY SHERIFF REPORTED WINDS TO 60 MPH FROM DANNEBROG TO 
ELBA AND SAINT PAUL AT 730 PM.

PEOPLE IN GREELEY...NANCE...NORTHERN HOWARD AND NORTHWESTERN MERRICK
COUNTIES SHOULD SEEK SHELTER IN A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS.

THE PRIMARY SEVERE WEATHER THREAT IS STRONG AND DAMAGING WINDS IN
EXCESS OF 60 MPH.

LAT...LON 4135 9877 4111 9806 4161 9775 4186 9846

&

NNNN

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 Aug 4, 2:10 PM CDT, 5 hours 29 minutes earlier.

Area forecast discussion, Aug 4, 2:10 PM CDT, 5 hours 29 minutes before
SOUTH CENTRAL NEBRASKA/NORTH CENTRAL KANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HASTINGS NE
210 PM CDT SUN AUG 4 2002

POSITION OF SFC BOUNDARY AND RESULTANT POPS ARE THE QN OF THE DAY.
AS OF 18Z...BOUNDARY WAS ANALYZED AS A WARM FRONT RUNNING FROM NR
LXN TO JUST N OF JYR.  18Z TEMPS TO THE S WERE IN THE LOW AND MID
90S F WITH ARND 100 F OVR THE KS CWA.  ALL OCCURRING UNDR AN
ELONGATED RIDGE FM KS ACRS THE OHIO VALLEY...OFFSET BY LOW SPINNING
OVR VANCOUVER ISLAND.

WND FIELD IS WEAK AND MSTR IS PLENTIFUL ON THE SNDINGS.  WITH AFTN
HIGHS NR CONVECTIVE TEMPS...MINIMAL FORCING WL BE NEEDED TO POP SOME
SLOW MOVG +RA PRODUCERS.  THE MORE DIFFICULT QN MAY BE FOR THE
OVRNGT HRS AS THE LACK OF A HEALTHY LLVL JET MAY NOT OVERCOME THE
WARM MID LVLS.  WL FOCUS 1ST PD POPS MORE N AND W WITH THE FRONT
THAN ONGOING FORECAST AND LIMIT KS TO SLGT CHC THIS EVE AS PER DVLPG
CU FIELD DOWN YONDER.

AT ANY RATE...OVRNGT CONVECTION OVR NERN NEB SHOULD BE ENUF TO SHOVE
THE BNDRY SWD AGAIN WITH OUTFLOW TO LIMIT MON HIGH TEMPS FOR THE
EXTREME NRN ZONES...AND PRVD FOCUS FOR EARLY EVE TSRA.  WL ADJUST
MON HIGHS UPWARD BASED ON TDAS EXPERIENCE AND INSERT A SLGT CHC TSRA
FOR THE EVE HRS OVR THOSE NRN ZONES.  LIMITING VARIABLE FOR ANY
HIGHER POPS IS THE BLDG RIDGE/WARMING MID LVL TEMPS AS PER META -4 C
500 MB PROGNOSIS.

MDLS IN GENL AGRMT WITH AMPLIFYING PATN AS LOW DIGS TWD THE PAC NW.
WL BUMP TEMPS UP TO THE 95 TO 100 RANGE OVR THE CWA FOR MUCH OF THE
WEEK AND WL NOT BUY INTO AVN/MRF SOLN OF A STRONG CDFNT BY WEEKS
END.  WL ASSUME THE ECMWF MORE SUMMERTIME SCENARIO OF A NRN PLNS SYS
FOR THIS ISSUANCE WITH WEAK FRONT SAGGING INTO THE NEB ZONES.  WL
INTRO A PCPN MENTION FOR THE NEB CNTIES FOR THE FRI NGT/SAT PDS WITH
ONLY A SLGT COOLING OF TEMPS AND SEE WHAT HAPPENS.

.GID...NONE.

9

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 4, 8:05 PM CDTSevere Thunderstorm WarningGIDValley40 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2002Every severe thunderstorm warning in 2002

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.