Alert archive / Nebraska / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 191, NWS Hastings, NE

August 12, 2001Phelps County, Nebraska

NWS Hastings, NE issued this severe thunderstorm warning at Aug 12, 2001, 6:20 PM CDT for Phelps County, Nebraska. It was in force for 55 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: Aug 12, 2001, 6:20 PM CDT (23:20 UTC)
Expired: Aug 12, 2001, 7:15 PM CDT
In force: 55 min
Issued by: NWS Hastings, NE
Area: Whole counties

County Phelps County, NE

The radar

The Grand Island radar (KUEX), 85 km from the middle of the area, began a volume at 23:21 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 nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 11.3 hours before the alert went out and 121 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: 758 J/kg
Mixed-layer CIN: -199 J/kg
Mixed-layer LCL: 1445 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 97 m²/s²
0-3 km storm-relative helicity: 118 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

099 
WUUS53 KGID 122320
SVRGRI
NEC137-130015-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HASTINGS NE
620 PM CDT SUN AUG 12 2001

THE NATIONAL WEATHER SERVICE IN HASTINGS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  PHELPS COUNTY IN SOUTH CENTRAL NEBRASKA

* UNTIL 715 PM CDT

* AT 615 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 9 MILES NORTHWEST OF BERTRAND...OR ABOUT 10
  MILES SOUTH OF LEXINGTON...MOVING SOUTHEAST AT 30 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  BERTRAND AT 630 PM CDT
  LOOMIS AT 645 PM CDT
  HOLDREGE AT 655 PM CDT
  FUNK AT 705 PM CDT

PEOPLE IN PHELPS COUNTY SHOULD SEEK SHELTER IN A STURDY STRUCTURE AND
STAY AWAY FROM WINDOWS. DAMAGING THUNDERSTORM WINDS IN EXCESS OF 60
MPH AND LARGE HAIL THE SIZE OF GOLFBALLS ARE LIKELY.

$$

EWALD
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 12, 2:00 PM CDT, 4 hours 20 minutes earlier.

Area forecast discussion, Aug 12, 2:00 PM CDT, 4 hours 20 minutes before

SOUTH CENTRAL NEBRASKA/NORTH CENTRAL KANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HASTINGS NE
200 PM CDT SUN AUG 12 2001

KUDOS TO THE ETA FROM THE 8/10 12Z RUN. THE 54HR PROG AT THAT
TIME...WHICH WAS FOR 18Z THIS AFTERNOON...SHOWED INCREASING LIFT
AND MOISTURE ALL OVER CENTRAL NEBRASKA AND DEPOSITED HEALTHY
QPFS WITHIN THE CWA. THE AVN ON THE OTHER HAND MISSED THE EVENT.
CURRENTLY...SHOWERS AND THUNDERSTORMS ARE IN AND ALONG NORTHERN
SECTION OF THE CWA...MOVING ESE. WATER VAPOR IMAGERY AND PROFILERS
SHOW AN ACCOMPANYING VORT MAX OVER THE NEB/SD BORDER THIS HOUR.
MEANWHILE...STIFLING HEAT CONTINUES TO GRIP THE WESTERN STATES AS
AN UPPER LEVEL HIGH PRESSURE RIDGE REMAINS ENTRENCHED THERE. AT
THE SFC...A COLD FRONT EXTENDED FROM LOW PRESSURE OVER THE OHIO
VALLEY INTO EASTERN TEXAS. CLOSER TO HOME...A SECOND COLD FRONTAL
BOUNDARY WAS LOCATED MAINLY OVER SOUTHERN SD...JUST BEHIND THE
SHOWERS ACTIVITY GOING ON.

SOME DIFFERENCES NOTED AMONGST THE MODELS. THE GENERAL UPPER LEVEL
PATTERN IS PROGGED TO DAMPEN THE WESTERN RIDGE WITH TIME BY ALL THE
MODELS. BUT SPECIFICS DIVERGE AS THERE IS LACKING AGREEMENT WITH
VORT MAXES RUNNING UP AND OVER THE RIDGE. EVEN THIS MORNINGS
INITIALIZATION PERIOD WAS IN DISAGREEMENT. THE AVN APPEARED TO BE
THE MOST ON TRACK WITH THE WAVE MOVING THRU THE AREA...WHILE THE
ETA AND NGM WERE POOR AT BEST. EVEN LOW LEVEL TEMPS AND MOISTURE ARE
NOT IN GREAT AGREEMENT. SO...ANSWERS PROBABLY LAY SOMEWHERE
IN  BETWEEN.

MONDAY NIGHT AND INTO TUESDAY APPEARS TO BE THE NEXT SHOT FOR PCPN
AS A RATHER VIGOROUS SHORT WAVE APPROACHES THE PLAINS. WITH MODELS
SHOWING TIMING AND PLACEMENT DIFFICULTIES...DECIDED TO COVER MON
NIGHT AND TUESDAY EQUALLY WITH SMALL POPS WITHIN NEB CWA.

COOLER AIR ADVERTISED TO INFILTRATE THE AREA TUESDAY
NIGHT/WEDNESDAY MORNING...SO WILL DROP TEMPS A BIT BELOW GUID.

IN THE EXTENDED...GOING FCST HAS PCPN CHANCES WEDNESDAY. IF THIS
SYSTEM MOVES THRU FASTER THAN EXPECTED...GOOD CHANCE WELL BE DRY
WITH WAKE OF THE FRONT. WILL LEAVE ALONE FOR NOW UNTIL THINKS
BECOME A BIT MORE CLEAR. OTHERWISE...NAO TRENDS SUGGEST A WARMING
TREND IN THE EXTENDED...SO WILL GO HIGHER THAN MEX OR MRF MOS TEMPS.

.GID...NONE.

DEE

In the hours before

Local storm report, Aug 12, 1:08 PM CDT, 5 hours 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HASTINGS NE
108 PM CDT SUN AUG 12 2001

TIME(CDT)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1255 PM    EXETER                    NE    1 INCH HAIL
08/12/01   FILLMORE

Local storm report, Aug 12, 5:36 PM CDT, 44 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HASTINGS NE
536 PM CDT SUN AUG 12 2001

TIME(CDT)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0517 PM    3 SE GOTHENBURG           NE    1.75 INCH HAIL
08/12/01   DAWSON

Special weather statement, Aug 12, 5:54 PM CDT, 26 minutes before

KSZ005>007-017>019-NEZ039>041-046>049-060>064-072>077-082>087-130200-

SEVERE WEATHER OUTLOOK - SOUTH CENTRAL NEBRASKA/NORTH CENTRAL KANSAS
NATIONAL WEATHER SERVICE HASTINGS NE
554 PM CDT SUN AUG 12 2001

...ISOLATED SEVERE THUNDERSTORMS POSSIBLE ACROSS SOUTH CENTRAL
NEBRASKA THIS EVENING...

A VIGOROUS UPPER LEVEL DISTURBANCE WILL BRING SCATTERED THUNDERSTORMS
TO PARTS OF SOUTH CENTRAL NEBRASKA THIS EVENING...PRIMARILY ALONG AND
SOUTH OF INTERSTATE 80 AND WEST OF US 281 THROUGH 800 PM. A FEW OF
THESE MAY BE SEVERE WITH LARGE HAIL...HEAVY RAIN AND FREQUENT CLOUD
TO GROUND LIGHTNING.

SPOTTER ACTIVATION IS NOT ANTICIPATED ACROSS SOUTH CENTRAL
NEBRASKA THIS EVENING DUE TO THE EXPECTED ISOLATED COVERAGE OF SEVERE
THUNDERSTORMS.

STAY TUNED TO NOAA WEATHER RADIO...OR YOUR LOCAL FAVORITE MEDIA
OUTLET FOR LATER STATEMENTS OR POSSIBLE WARNINGS.

TEH

Local storm report, Aug 12, 6:12 PM CDT, 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HASTINGS NE
612 PM CDT SUN AUG 12 2001

TIME(CDT)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0608 PM    JOHNSON RES               NE    1 INCH HAIL
08/12/01   GOSPER                          QUARTER SIZE HAIL
                                           COVERING THE GROUND.
                                           REPORTED BY LAW
                                           ENFORCEMENT.

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 12, 12:50 PM CDT	Severe Thunderstorm Warning	GID	Fillmore	25 min
Aug 12, 4:56 PM CDT	Severe Thunderstorm Warning	GID	Dawson	64 min
Aug 12, 5:56 PM CDT	Severe Thunderstorm Warning	GID	Dawson, Gosper	49 min
Aug 12, 6:46 PM CDT	Severe Thunderstorm Warning	GID	Furnas, Gosper	59 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.