Alert archive / Nebraska / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 42, NWS North Platte, NE
NWS North Platte, NE issued this severe thunderstorm warning at Jun 1, 2011, 9:00 PM CDT for Frontier County, Nebraska. It was in force for 30 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 1, 2011, 9:00 PM CDT (02:00 UTC)
- Expired
- Jun 1, 2011, 9:30 PM CDT
- In force
- 30 min
- Issued by
- NWS North Platte, NE
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
County Frontier County, NE
The radar
The Grand Island radar (KUEX), 142 km from the middle of the area, began a volume at 02:04 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.
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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 1, 4:45 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 2.0 hours before the alert went out and 84 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.
- Mixed-layer CAPE
- 3158 J/kg
- Mixed-layer CIN
- -48 J/kg
- Mixed-layer LCL
- 1439 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 127 m²/s²
- 0-3 km storm-relative helicity
- 231 m²/s²
- Significant tornado parameter
- 1.4
- Supercell composite
- 12.2
The text
As transmitted, in the capitals the NWS used until 2016.
941
WUUS53 KLBF 020200
SVRLBF
NEC063-020230-
/O.NEW.KLBF.SV.W.0042.110602T0200Z-110602T0230Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
900 PM CDT WED JUN 1 2011
THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
EASTERN FRONTIER COUNTY IN SOUTHWEST NEBRASKA...
* UNTIL 930 PM CDT
* AT 855 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS
STORM WAS LOCATED 6 MILES NORTHEAST OF MEDICINE CREEK RESERVOIR
STATE RECREATION AREA...OR 24 MILES SOUTHEAST OF CURTIS...AND
MOVING NORTHEAST AT 40 MPH.
* THE SEVERE THUNDERSTORM WILL AFFECT MAINLY RURAL AREAS OF EASTERN
FRONTIER COUNTY...INCLUDING THE FOLLOWING LOCATIONS HIGHWAY 18 MILE
MARKER 30.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.
&&
LAT...LON 4051 10032 4071 10005 4070 9997 4044 9997
4043 9999 4043 10009 4036 10009 4034 10011
4034 10016
TIME...MOT...LOC 0159Z 235DEG 34KT 4046 10010
WIND...HAIL <50MPH 1.00IN
$$
POWER2 follow-up statements
261
WWUS53 KLBF 020217
SVSLBF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
917 PM CDT WED JUN 1 2011
NEC063-020230-
/O.CON.KLBF.SV.W.0042.000000T0000Z-110602T0230Z/
FRONTIER NE-
917 PM CDT WED JUN 1 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EASTERN
FRONTIER COUNTY UNTIL 930 PM CDT...
AT 913 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS
STORM WAS LOCATED 12 MILES NORTHEAST OF MEDICINE CREEK RESERVOIR
STATE RECREATION AREA...OR 26 MILES SOUTHWEST OF LEXINGTON...MOVING
NORTHEAST AT 20 MPH.
LOCATIONS IMPACTED INCLUDE...
EUSTIS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.
&&
LAT...LON 4051 10032 4071 10005 4070 9997 4044 9997
4043 9999 4043 10009 4036 10009 4034 10011
4034 10016
TIME...MOT...LOC 0218Z 242DEG 16KT 4049 10002
WIND...HAIL <50MPH 1.00IN
$$
POWER126
WWUS53 KLBF 020231
SVSLBF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
931 PM CDT WED JUN 1 2011
NEC063-020241-
/O.EXP.KLBF.SV.W.0042.000000T0000Z-110602T0230Z/
FRONTIER NE-
931 PM CDT WED JUN 1 2011
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN FRONTIER COUNTY HAS
EXPIRED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.
LAT...LON 4051 10032 4071 10005 4070 9997 4044 9997
4043 9999 4043 10009 4036 10009 4034 10011
4034 10016
TIME...MOT...LOC 0217Z 242DEG 16KT 4049 10002
$$
POWERWhat 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 North Platte, NE wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 1, 3:07 PM CDT, 5 hours 53 minutes earlier.
Area forecast discussion, Jun 1, 3:07 PM CDT, 5 hours 53 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NORTH PLATTE NE 307 PM CDT WED JUNE 01 2011 .SHORT TERM DISCUSSION (TONIGHT THROUGH SATURDAY NIGHT)... TONIGHT...THE UPPER LEVEL PATTERN WAS BECOMING MORE AMPLIFIED TODAY...WHICH HAS ALLOWED FOR STRONG WARM AIR ADVECTION ALOFT INTO THE CENTRAL PLAINS. IN ADDITION...LEE SIDE CYCLOGENESIS OVER EASTERN COLORADO HAD BROUGHT BREEZY SOUTHERLY WINDS TO THE AREA WHICH NOT ONLY HELPED TO BRING NORTH THE WARMER TEMPERATURES BUT BROUGHT HIGH DEWPOINTS INTO SOUTHERN NEBRASKA. BY LATER THIS AFTERNOON...DEWPOINTS IN THE UPPER 60S ARE EXPECTED FROM IMPERIAL TO THEDFORD AND AREAS TO THE EAST. WITH THIS AMOUNT OF MOISTURE...MU CAPE VALUES WILL BUILD TO AROUND 5000 J/KG. WITH DEEP LAYER SHEER OF 35 TO 45 KTS...AND FROM LOOKING AT THE WIND PROFILES WITH HEIGHT SUPERCELL THUNDERSTORMS ARE POSSIBLE INTO THE EVENING HOURS. MAIN AREA OF CONVERGENCE LOOKS TO BE ALONG A DRY LINE FROM SOUTHWEST NEBRASKA THROUGH EASTERN COLORADO. THIS AREA IS CO-LOCATED WITH FOCUS OF 700MB MOISTURE TRANSPORT AND NOSE OF THE THETA-E RIDGE. THEREFORE ANTICIPATING STORMS TO DEVELOP IN THE NEXT COUPLE OF HOURS WITH THE AREA OF CONVECTION THEN MOVING EAST. UPPER LEVEL FLOW IS PRETTY WEAK SO THINK STORM MOVEMENT WILL BE RATHER SLOW. THURSDAY/THURSDAY NIGHT...THURSDAY WILL LIKELY BE THE HOTTEST DAY IN THE NEXT 7 DAYS. UPPER RIDGE BREAK DOWN AS TROUGH MOVES INTO INTERMOUNTAIN WEST. GOING HIGHS FROM 90 TO 97 LOOK APPROPRIATE. AS COLD FRONT MOVES INTO THE NORTHWEST DURING THE EVENING...EXPECTED THUNDERSTORM TO FIRE...ESPECIALLY IN UNSTABLE ENVIRONMENT STARTING IN SHERRY COUNTY AND TRACKING EAST. ISOLATED STORMS POSSIBLE EVENING OVERNIGHT INTO SOUTHWEST NEBRASKA AS WELL. FRIDAY/FRIDAY NIGHT...COLD FRONT PASSAGE LATE THURSDAY NIGHT WILL BRING A COOLDOWN OF 10-12 DEGREES WITH UPPER 70S/LOWER 80S EXPECTED. WITH FRONT FORECAST TO STALL IN NORTHERN KANSAS...STORM POSSIBLE ESPECIALLY ACROSS THE SOUTH FRIDAY NIGHT. SATURDAY/SATURDAY NIGHT...WARM FRONT IN NORTHERN KANSAS FORECAST TO LIFT NORTH NEAR SRN NEBRASKA SATURDAY NIGHT. STORMS AGAIN TO REFIRE ACROSS THE SOUTH. NO SIGNALS FOR STRONG CONVECTION...BUT INSTABILITY WILL BE HIGH GOING INTO SATURDAY EVENING. .EXTENDED DISCUSSION (SUNDAY THROUGH WEDNESDAY)... UPPER RIDGE ACROSS CENTRAL CONUS AND PERSISTENT TROUGH ACROSS THE WEST. GFS AND ECMWF INDICATED A COLD FRONT TO PUSH IN TUESDAY NIGHT OR WEDNESDAY. A HEATUP AGAIN IN STORE BY SUNDAY WITH UPPER 80/LOWER 90S POSSIBLE THROUGH TUESDAY. MOISTURE TRAJECTORIES STILL INDICATE MAINLY NOCTURNAL CONVECTION FAVORED SUNDAY MONDAY IN SWRLY FLOW ALOFT ACROSS NEW MEXICO NORTHEAST ACROSS COLORADO INTO KANSAS. THIS PERIOD LOOKS MAINLY DRY...ALTHOUGH ISOLATED STORMS POSSIBLE. WEDNESDAY STILL QUITE WARM AS UPPER RIDGE BEGINS TO BREAK DOWN. && .AVIATION... WITH THE EXCEPTION OF A PASSING THUNDERSTORM AROUND KLBF LATER THIS AFTERNOON AND EVENING...CEILINGS/VISIBILITIES WILL BE VFR THROUGH MID DAY ON THURSDAY. THE HIGHEST PROBABILITIES FOR THUNDERSTORMS ARE ACROSS SOUTHERN NEBRASKA IN THE LATE AFTERNOON AND EARLY EVENING HOURS SO HAVE CONTINUED WITH THE MENTION FOR SOME CONVECTION IN THE KLBF TAF. WINDS WILL BECOME PRIMARILY SOUTH TONIGHT AS A SURFACE LOW MOVES FROM EASTERN COLORADO INTO SOUTHEAST MONTANA. THE WINDS WILL STAY ABOVE 12KTS THROUGH THE NIGHT...THEN LOOK FOR BREEZY CONDITIONS AGAIN ON THURSDAY WITH GUSTS IN THE MID TO UPPER 20S. && .FIRE WEATHER... FIRE WEATHER COULD BECOME CRITICAL OVER THE EASTERN PANHANDLE AND WESTERN NEBRASKA ON THURSDAY AFTERNOON. TEMPERATURES WILL SOAR INTO THE LOW AND MID 90S. THERE IS POTENTIAL FOR DRIER AIR TO MOVE INTO THE AREAS OF CONCERN WITH DEWPOINTS DROPPING INTO THE UPPER 30S AND LOW 40S. IT MAY NOT GET THAT DRY...BUT IF IT WOULD HAPPEN RELATIVE HUMIDITIES WOULD DROP TO 15 TO 20 PERCENT. IN ADDITION...WINDS LOOK TO PICK UP IN THE AFTERNOON WITH SUSTAINED SPEEDS OF 15 TO 20 MPH AND GUSTS TO 30 IN SOME AREAS. LOOKING AT FUELS...GRASSES ARE QUITE GREEN SO WOULD LIKE TO SEE A FEW MORE HOT AND DRY DAYS TO DRY OUT FUELS TO BRING ABOUT EXTREME FIRE SPREADING POTENTIAL. && .HYDROLOGY... ALONG THE NORTH PLATTE RIVER DOWNSTREAM OF LAKE MCCONAUGHY...FURTHER RISES ARE EXPECTED OVER THE NEXT WEEK AS ELEVATED RELEASES CONTINUE FROM KINGSLEY DAM. IN ADDITION THE UPPER PORTIONS OF THE MAIN STEM OF THE PLATTE RIVER WILL ALSO SEE SLIGHT RISES IN THE NEXT WEEK AS THIS WATER MOVES DOWN THE RIVER SYSTEM. UPSTREAM OF LAKE MCCONAUGHY...LEVELS ARE EXPECTED TO REMAIN NEARLY STEADY AS RELEASES HAVE LOWERED SLIGHTLY FROM RESERVOIRS IN WYOMING. IN ADDITION TO THE FLOODING ALONG THE NORTH PLATTE RIVER...THE SOUTH PLATTE RIVER IS EXPECTED TO BEGIN SEEING RISES IN THE COMING WEEKS AS THE MOUNTAIN SNOWMELT SURGES DUE TO WARM TEMPERATURES EXPECTED IN THOSE AREAS IN THE NEXT WEEK. AS THE SNOW MELTS FROM THE MOUNTAINS...PLANNED RELEASES FROM THE RESERVOIRS ON THE NORTH PLATTE RIVER COULD BE ALTERED WHICH WOULD HAVE AN IMPACT ON HOW FAST THE RIVER RISES AND TO WHAT STAGE. THIS WILL BE WATCHED CLOSELY IN THE COMING WEEKS. && .LBF WATCHES/WARNINGS/ADVISORIES...NONE. && SHORT TERM/EXTENDED...BROOKS/ROBERG AVIATION/HYDROLOGY/FIRE WEATHER...BROOKS
Hazardous weather outlook, Jun 1, 4:17 PM CDT, 4 hours 43 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE NORTH PLATTE NE 417 PM CDT WED JUN 1 2011 NEZ004>010-022>029-035>038-056>059-069>071-094-022130- SHERIDAN-EASTERN CHERRY-KEYA PAHA-BOYD-BROWN-ROCK-HOLT-GARDEN- GRANT-HOOKER-THOMAS-BLAINE-LOUP-GARFIELD-WHEELER-ARTHUR-MCPHERSON- LOGAN-CUSTER-DEUEL-KEITH-PERKINS-LINCOLN-CHASE-HAYES-FRONTIER- WESTERN CHERRY- 417 PM CDT WED JUN 1 2011 /317 PM MDT WED JUN 1 2011/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WESTERN AND NORTH CENTRAL NEBRASKA. .DAY ONE...TONIGHT. THUNDERSTORMS ARE POSSIBLE THROUGH THIS EVENING...MAINLY FROM SOUTHWEST INTO CENTRAL NEBRASKA. STORMS ARE EXPECTED ALONG AND SOUTH OF A LINE FROM OSHKOSH TO THEDFORD...THEN WILL TRANSITION EAST. LARGE HAIL AND STRONG WINDS WILL BE THE MAIN THREAT...BUT IT WILL BE POSSIBLE FOR AN ISOLATED TORNADO. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. DRY AND BREEZY CONDITIONS WILL OCCUR OVER THE EASTERN NEBRASKA PANHANDLE AND THE WESTERN SANDHILLS ON THURSDAY. THIS WILL RESULT IN AN ELEVATED FIRE DANGER THURSDAY AFTERNOON AND EARLY EVENING. THUNDERSTORMS ARE POSSIBLE THURSDAY NIGHT AS A COLD FRONT WILL CROSS CENTRAL AND WESTERN NEBRASKA. ADDITIONAL RISES ARE EXPECTED ALONG THE NORTH PLATTE RIVER IN THE NEXT WEEK...EVENTUALLY RISING ABOVE 8.0 FEET THIS WEEKEND. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND EVENING. && THIS PRODUCT IS NOW AVAILABLE...ALONG WITH OTHER WEATHER... HYDROLOGICAL AND CLIMATOLOGICAL INFORMATION...AT HTTP://WWW.WEATHER.GOV/NORTHPLATTE BROOKS
In the hours before
Special weather statement, Jun 1, 4:00 PM CDT, 5 hours before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 400 PM CDT WED JUN 1 2011 NEZ071-012130- FRONTIER NE- 400 PM CDT WED JUN 1 2011 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN FRONTIER COUNTY UNTIL 430 PM CDT... AT 358 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 7 MILES SOUTHWEST OF EUSTIS...OR 19 MILES EAST OF CURTIS...MOVING NORTHEAST AT 25 MPH. HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... EUSTIS... THIS STORM 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. STOPPKOTTE
Local storm report, Jun 1, 4:25 PM CDT, 4 hours 35 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
425 PM CDT WED JUN 01 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0424 PM HAIL 6 W EUSTIS 40.66N 100.14W
06/01/2011 E1.00 INCH FRONTIER NE PUBLIC
&&
JSWEETLocal storm report, Jun 1, 4:43 PM CDT, 4 hours 17 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
443 PM CDT WED JUN 01 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0442 PM HAIL 1 E EUSTIS 40.66N 100.01W
06/01/2011 E1.50 INCH FRONTIER NE TRAINED SPOTTER
&&
JSWEETLocal storm report, Jun 1, 8:29 PM CDT, 31 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
829 PM CDT WED JUN 01 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0829 PM HAIL MAYWOOD 40.66N 100.62W
06/01/2011 E1.00 INCH FRONTIER NE PUBLIC
&&
JSWEETThe office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 1, 7:48 PM CDT | Severe Thunderstorm Warning | LBF | Hayes, Lincoln | 42 min |
| Jun 1, 8:28 PM CDT | Severe Thunderstorm Warning | LBF | Frontier, Lincoln | 47 min |
| Jun 1, 8:33 PM CDT | Severe Thunderstorm Warning | LBF | Frontier | 27 min |
Nearby
Severe Thunderstorm Warnings in Nebraska, 2011Every severe thunderstorm warning in 2011
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.