Alert archive / Nebraska / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 203, NWS Hastings, NE

August 4, 2015Dawson County, Furnas County, Gosper County, Nebraska

NWS Hastings, NE issued this severe thunderstorm warning at Aug 4, 2015, 2:55 PM CDT for Dawson County, Furnas County, Gosper County, Nebraska. It was in force for 50 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 4, 2015, 2:55 PM CDT (19:55 UTC)
Expired
Aug 4, 2015, 3:45 PM CDT
In force
50 min
Issued by
NWS Hastings, NE
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Dawson County, NE, Furnas County, NE, Gosper County, NE

The radar

The Grand Island radar (KUEX), 122 km from the middle of the area, began a volume at 19:58 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.

IssuedProductOfficeLasted
Aug 4, 1:34 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 7.9 hours before the alert went out and 92 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, N. Platte/Lee Bi, NE at 12:00Z on 2015-08-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 983 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, N. Platte/Lee Bi, NE at 12:00Z on 2015-08-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 19 square meters per square second.193958Sfc1 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
983 J/kg
Mixed-layer CIN
-213 J/kg
Mixed-layer LCL
899 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
19 m²/s²
0-3 km storm-relative helicity
29 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

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, 2:37 PM CDT, 18 minutes earlier.

Area forecast discussion, Aug 4, 2:37 PM CDT, 18 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HASTINGS NE
237 PM CDT TUE AUG 4 2015

.SHORT TERM...(THIS EVENING THROUGH WEDNESDAY)
ISSUED AT 237 PM CDT TUE AUG 4 2015

...A FEW SEVERE TSTMS POSSIBLE THRU LATE THIS EVE WITH VERY HEAVY
RAINFALL AND THE POSSIBILITY OF LOCALIZED FLASH FLOODING...

ALOFT: THE UPR-LVL FLOW WAS CHARACTERIZED BY TROFS OVER THE ERN
USA AND WRN USA...WITH A RIDGE MOVING OUT OF THE ROCKIES AND OVER
THE PLAINS. THE FLOW WILL BE PROGRESSIVE THRU TOMORROW WITH
GENERAL DEAMPLIFICATION. WV IMAGERY SHOWED A LOW OVER WY/CO WITH
A TROF EXTENDING SE INTO KS. THIS FEATURE WILL MOVE INTO THE FCST
AREA TONIGHT AND E OF THE REGION TOMORROW. A SHORTWAVE RIDGE WILL
FOLLOW TOMORROW AFTERNOON.

SURFACE: THE POLAR FRONT WAS QUASI-STATIONARY ACROSS THE OH AND
MID MS RIVER VALLEYS...ACROSS NRN KS AND THEN NW BANKED UP AGAINST
THE ROCKIES. THIS FRONT WILL PROBABLY SINK S INTO NRN OK...
PROBABLY SHOVED S BY TSTM OUTFLOWS.

SVR TSTM WATCH 470 IS IN EFFECT FOR THE SW FRINGE OF THE FCST
AREA UNTIL 9 PM.

WITH THE UPR TROF MOVING THRU...TSTMS WILL BE POSSIBLE THRU THE
NIGHT...POSSIBLY LINGERING INTO PART OF TOMORROW MORNING.

AM VERY CONCERNED ABOUT EXCESSIVE RAINFALL AND FLASH FLOOD
POTENTIAL.

RAINFALL: CONTEMPLATED A FLASH FLOOD WATCH ALONG AND S OF HWY 6...
INCLUDING N-CNTRL KS. SINGLE CELL STORM MOVEMENTS HAVE BEEN VERY
SLOW TODAY...AND ARE ONLY FCST TO BE 5-15 KTS FROM N-S ACROSS THE
FCST AREA TONIGHT.

THE MAIN CONCERN IS THE OUTFLOW BOUNDARY/FRONT THAT LIES ACROSS
NRN KS. WE ARE ALREADY SEEING PERSISTENT TSTM DEVELOPMENT AND ONCE
THE MODEST LOW-LVL JET FORMS...IT WILL FURTHER MAINTAIN/ENHANCE
LIFT ALONG THIS BOUNDARY.

WE WILL CONT TO MONITOR TRENDS AND MAY STILL ISSUE A FLASH FLOOD
WATCH BEFORE THIS AFTERNOON IS OVER. WE HAVE ALREADY ISSUED A
WARNING FOR SE PHILLIPS COUNTY.

WHILE THE FCST AREA HAS NOT SEEN MUCH RAIN OVER THE LAST WEEK...
IF PERSISTENT/REPEATED TSTM ACTIVITY OCCURS...LOCALIZED FLASH
FLOODING WILL BE POSSIBLE.

TOMORROW: ANY LEFTOVER RAIN SHOULD BE E OF THE FCST AREA BY MIDDAY
AT THE LATEST.

MULTI-MODEL CROSS SECTIONS SUGGEST WIDESPREAD LOW STRATUS COULD
LINGER THRU MUCH OF THE DAY...PUTTING A CAP ON TEMPS. WE HAVE
INDICATED SOME IMPROVEMENT W AND S OF THE TRI-CITIES IN THE
AFTERNOON. TEMPS COULD BE HELD IN THE 70S N AND E OF THE TRI-
CITIES.

.LONG TERM...(WEDNESDAY NIGHT THROUGH TUESDAY)
ISSUED AT 237 PM CDT TUE AUG 4 2015

THE OVERALL PATTERN FOR THE MID TERM PERIOD FOCUSES ON A WEAK
UPPER LEVEL RIDGE STRETCHING FROM THE DESERT SOUTHWEST INTO THE
LOWER MISSISSIPPI RIVER VALLEY...WHILE AN UPPER LEVEL LOW TRUDGES
ALONG THE PACIFIC NORTHWEST. AS THIS LOW SHIFTS EASTWARD...THE
PLAINS REMAIN SITUATED IN NEARLY ZONAL FLOW ABOVE THE RIDGE AND
THUS REAP THE BENEFITS OF SEVERAL PASSING DISTURBANCES. THIS WILL
RESULT IN NUMEROUS CHANCES FOR OFF AND ON PRECIPITATION ACROSS THE
FORECAST AREA.

REGARDING TEMPERATURES...AS THE RIDGE REMAINS FAIRLY LOW
AMPLIFIED...THE PLAINS REMAIN ON THE COOLER SIDE OF 850 MB
TEMPERATURES. THIS SHOULD KEEP TEMPERATURES FAIRLY MILD FOR THIS
TIME OF YEAR IN THE 80S TO EVEN LOW 90S IN PORTIONS OF NORTH
CENTRAL KANSAS. HOWEVER...WARM TEMPERATURES ARE NOT THAT FAR AWAY
AND MAY EVEN NOSE THEIR WAY IN A DAY OR TWO AS WARM AIR ADVECTION
RIDES NORTH ALONG THE FRONT RANGE.

BY THE END OF THE LONG TERM PERIOD...MODELS ARE HINTING AT A
POSSIBLE PATTERN CHANGE AS THE UPPER LEVEL LOW SHIFTS EASTWARD.
RIDGING LOOKS TO BECOME MORE AMPLIFIED ESPECIALLY ACROSS THE FRONT
RANGE WHICH WILL BRING BACK OUR HOT SUMMER TEMPERATURES AND LIKELY
DECREASE CHANCES FOR PRECIPITATION. HOWEVER...THAT IS SEVERAL DAYS
AWAY AND MODELS HAVE BEEN KNOWN TO CHANGE DRAMATICALLY.

&&

.AVIATION...(FOR THE 18Z KGRI/KEAR TAFS THROUGH 18Z WED AFTERNOON)
ISSUED AT 1234 PM CDT TUE AUG 4 2015

THIS AFTERNOON: VFR MULTI-LAYERED CLOUD COVER. THE PROBABILITY OF
IFR TSTMS AFFECTING THE TERMINALS INCREASES AFTER 21Z. E WINDS
GENERALLY 10-15 KTS. CONFIDENCE: MEDIUM

TONIGHT: DIFFICULT TO PINPOINT TSTMS...BUT THE GREATEST
PROBABILITY APPEARS TO BE UNTIL 05Z. HOWEVER...CAN'T RULE OUT
ADDITIONAL TSTMS AFTER 05Z. MVFR OR POSSIBLY IFR STRATUS MAY THEN
DEVELOP...AS INDICATED BY GFS MOS AND GFS LAMP GUIDANCE. SE WINDS
UNDER 10 KTS EXCEPT IN/NEAR TSTMS. CONFIDENCE: LOW

WED THRU 18Z: THE DAY PROBABLY BEGINS WITH IFR OR MVFR STRATUS...
AND POSSIBLY SOME LIGHT FOG IN THE WAKE OF DEPARTING TSTMS.
GRADUAL IMPROVEMENT TO MVFR SHOULD OCCUR BY 15Z. ESE WINDS UNDER
10 KTS. CONFIDENCE: LOW

&&

.GID WATCHES/WARNINGS/ADVISORIES...
NE...NONE.
KS...NONE.
&&

SHORT TERM...HALBLAUB
LONG TERM...SALTZMAN
AVIATION...HALBLAUB
Hazardous weather outlook, Aug 4, 1:14 PM CDT, 1 hour 41 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE HASTINGS NE
114 PM CDT TUE AUG 4 2015

KSZ005>007-017>019-NEZ039>041-046>049-060>064-072>077-082>087-
051815-
PHILLIPS-SMITH-JEWELL-ROOKS-OSBORNE-MITCHELL-VALLEY-GREELEY-NANCE-
SHERMAN-HOWARD-MERRICK-POLK-DAWSON-BUFFALO-HALL-HAMILTON-YORK-
GOSPER-PHELPS-KEARNEY-ADAMS-CLAY-FILLMORE-FURNAS-HARLAN-FRANKLIN-
WEBSTER-NUCKOLLS-THAYER-
114 PM CDT TUE AUG 4 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL NEBRASKA AND
PORTIONS OF NORTH CENTRAL KANSAS.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

SCATTERED THUNDERSTORMS ARE LIKELY OVER PORTIONS OF THE OUTLOOK
AREA THROUGH TONIGHT. SOME THUNDERSTORMS COULD BE SEVERE BEFORE
MIDNIGHT...MAINLY WEST OF A LINE FROM BROKEN BOW TO KEARNEY TO
HEBRON NEBRASKA. HAIL UP TO THE SIZE OF GOLF BALLS AND DAMAGING
WIND GUSTS NEAR 60 MPH WILL BE THE PRIMARY THREATS. IN ADDITION...
SOME THUNDERSTORMS WILL PRODUCE VERY HEAVY RAINFALL...POSSIBLY
EXCEEDING 3 INCHES IN A FEW SPOTS...AND THIS COULD LEAD TO FLASH
FLOODING.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

PERIODIC THUNDERSTORM CHANCES REMAIN IN THE FORECAST WEDNESDAY
THROUGH MONDAY. AT THIS TIME TOO MUCH UNCERTAINTY EXISTS IN THE
FORECAST TO PIN DOWN SPECIFICS IN REGARD TO ANY SEVERE WEATHER
CHANCES.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND EVENING.

&&

MORE INFORMATION MAY BE OBTAINED AT THE FOLLOWING WEB PAGE:
   HTTP://WWW.WEATHER.GOV/HASTINGS  (ALL LOWERCASE)

HALBLAUB

In the hours before

Special weather statement, Aug 4, 2:11 PM CDT, 44 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HASTINGS NE
211 PM CDT TUE AUG 4 2015

KSZ005-006-018-041945-
PHILLIPS KS-OSBORNE KS-SMITH KS-
211 PM CDT TUE AUG 4 2015

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN PHILLIPS...
NORTHWESTERN OSBORNE AND SOUTHERN SMITH COUNTIES UNTIL 245 PM CDT...

AT 211 PM CDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM 6 MILES SOUTHEAST OF KIRWIN
TO NEAR PORTIS...AND MOVING NORTHEAST AT 10 MPH.

NICKEL SIZE HAIL AND WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH
THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
OSBORNE...KIRWIN...GAYLORD...PORTIS...HARLAN AND CEDAR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY
LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

THESE STORMS MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

&&

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM CDT FOR
NORTH CENTRAL KANSAS.

LAT...LON 3954 9905 3957 9905 3957 9923 3962 9922
      3973 9918 3972 9893 3963 9856 3942 9867
TIME...MOT...LOC 1911Z 237DEG 10KT 3960 9905 3953 9873

SALTZMAN
Special weather statement, Aug 4, 2:46 PM CDT, 9 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 4, 2:46 PM CDTSpecial Weather StatementGIDDawson, Gosper14 min
Aug 4, 3:38 PM CDTSevere Thunderstorm WarningGIDFurnas, Gosper, Harlan, Phelps52 min
Aug 4, 3:42 PM CDTSpecial Weather StatementGIDWebster33 min
Aug 4, 4:15 PM CDTSpecial Weather StatementGIDWebster30 min
Aug 4, 4:21 PM CDTSpecial Weather StatementGIDKearney39 min
Aug 4, 4:44 PM CDTSpecial Weather StatementGIDHarlan31 min
Aug 4, 4:56 PM CDTSpecial Weather StatementGIDWebster34 min
Aug 4, 5:15 PM CDTSpecial Weather StatementGIDHall30 min
Aug 4, 5:17 PM CDTSpecial Weather StatementGIDAdams, Clay, Hamilton28 min
Aug 4, 5:22 PM CDTSpecial Weather StatementGIDFranklin23 min
Aug 4, 5:57 PM CDTSpecial Weather StatementGIDHamilton, Howard, Merrick, York48 min
Aug 4, 2:11 PM CDTSpecial Weather StatementGIDSmith34 min
Aug 4, 2:12 PM CDTFlash Flood WarningGIDPhillips3 hr
Aug 4, 3:00 PM CDTSpecial Weather StatementGIDPhillips30 min
Aug 4, 3:05 PM CDTSevere Thunderstorm WarningGIDPhillips25 min
Aug 4, 3:18 PM CDTSevere Thunderstorm WarningGIDJewell27 min
Aug 4, 5:15 PM CDTFlash Flood WarningGIDPhillips3 hr
Aug 4, 5:44 PM CDTSpecial Weather StatementGIDJewell, Smith31 min
Aug 4, 6:20 PM CDTSpecial Weather StatementGIDMitchell10 min
Aug 4, 6:38 PM CDTAreal Flood AdvisoryGIDMitchell5 hr
Aug 4, 6:40 PM CDTSpecial Weather StatementGIDJewell, Mitchell35 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2015Every severe thunderstorm warning in 2015

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.