Alert archive / Nebraska / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 28, NWS Cheyenne, WY

May 27, 2013Dawes County, Nebraska

NWS Cheyenne, WY issued this severe thunderstorm warning at May 27, 2013, 4:43 PM MDT for Dawes County, Nebraska. It was in force for 62 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: May 27, 2013, 4:43 PM MDT (22:43 UTC)
Expired: May 27, 2013, 5:45 PM MDT
In force: 62 min
Issued by: NWS Cheyenne, WY
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Dawes County, NE

The radar

The Rapid City radar (KUDX), 163 km from the middle of the area, began a volume at 22:45 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.

What was reported inside it

Time	Report	Where	Remark
May 27, 5:22 PM MDT	HAIL 1	8 Se Crawford, NE

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 39 minutes after it went out.

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
May 27, 1:19 PM MDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Rapid City, SD (KUNR), launched 12:00Z, 10.7 hours before the alert went out and 157 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: 832 J/kg
Mixed-layer CIN: -71 J/kg
Mixed-layer LCL: 578 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 33 m²/s²
0-3 km storm-relative helicity: 147 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 5.2

Open this sounding in Storm Lab

The text

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

103 
WUUS55 KCYS 272243
SVRCYS
NEC045-272345-
/O.NEW.KCYS.SV.W.0028.130527T2243Z-130527T2345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
443 PM MDT MON MAY 27 2013

THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  DAWES COUNTY IN THE PANHANDLE OF NEBRASKA...

* UNTIL 545 PM MDT

* AT 439 PM MDT...A LINE OF SEVERE THUNDERSTORMS WAS LOCATED ALONG A
  LINE EXTENDING FROM CHADRON TO 11 MILES SOUTH OF FORT ROBINSON
  CAMPGROUND...AND MOVING EAST AT 20 MPH.

  HAZARD...QUARTER SIZE HAIL AND 60 MPH WIND GUSTS.

  SOURCE...RADAR INDICATED.

  IMPACT...HAIL DAMAGE TO VEHICLES AND CROPS IS EXPECTED. EXPECT WIND
           DAMAGE TO ROOFS...SIDING AND TREES.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  CHADRON CAMPGROUND AROUND 500 PM MDT.
  RED CLOUD CAMPGROUND AROUND 505 PM MDT.

OTHER LOCATIONS IN THE WARNING INCLUDE CHADRON ST PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

TO REPORT SEVERE WEATHER CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY.
THEY WILL SEND YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN
CHEYENNE.

&&

LAT...LON 4245 10278 4251 10348 4259 10349 4300 10306
      4300 10278
TIME...MOT...LOC 2243Z 282DEG 19KT 4281 10300 4252 10347

HAIL...1.00IN
WIND...60MPH

$$

RUBIN

4 follow-up statements

604 
WWUS55 KCYS 272300
SVSCYS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
500 PM MDT MON MAY 27 2013

NEC045-272345-
/O.CON.KCYS.SV.W.0028.000000T0000Z-130527T2345Z/
DAWES NE-
500 PM MDT MON MAY 27 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR DAWES COUNTY
UNTIL 545 PM MDT...

AT 458 PM MDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR BOX BUTTE
DAM...AND MOVING NORTHEAST AT 30 MPH.

HAZARD...QUARTER SIZE HAIL AND 60 MPH WIND GUSTS.

SOURCE...RADAR INDICATED.

IMPACT...HAIL DAMAGE TO VEHICLES AND CROPS IS EXPECTED. EXPECT WIND
         DAMAGE TO ROOFS...SIDING AND TREES.

THE SEVERE THUNDERSTORM WILL AFFECT MAINLY RURAL AREAS OF DAWES
COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPORT SEVERE WEATHER CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY.
THEY WILL SEND YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN
CHEYENNE.

&&

LAT...LON 4245 10278 4251 10348 4259 10349 4300 10306
      4300 10278
TIME...MOT...LOC 2300Z 215DEG 26KT 4249 10301

HAIL...1.00IN
WIND...60MPH

$$

RUBIN

643 
WWUS55 KCYS 272325
SVSCYS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
525 PM MDT MON MAY 27 2013

NEC045-272345-
/O.CON.KCYS.SV.W.0028.000000T0000Z-130527T2345Z/
DAWES NE-
525 PM MDT MON MAY 27 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR DAWES COUNTY
UNTIL 545 PM MDT...

AT 521 PM MDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR CRAWFORD...AND
MOVING NORTHEAST AT 20 MPH.

HAZARD...QUARTER SIZE HAIL AND 60 MPH WIND GUSTS.

SOURCE...TRAINED WEATHER SPOTTERS.

IMPACT...HAIL DAMAGE TO VEHICLES AND CROPS IS EXPECTED. EXPECT WIND
         DAMAGE TO ROOFS...SIDING AND TREES.

AT 522 PM MDT...QUARTER SIZE HAIL WAS REPORTED BY A SPOTTER LOCATED 
8 MILES SOUTHEAST OF CRAWFORD.

THE SEVERE THUNDERSTORM WILL AFFECT MAINLY RURAL AREAS OF DAWES
COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPORT SEVERE WEATHER CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY.
THEY WILL SEND YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN
CHEYENNE.

&&

LAT...LON 4245 10278 4256 10330 4263 10345 4300 10306
      4300 10278
TIME...MOT...LOC 2324Z 230DEG 19KT 4264 10334

HAIL...1.00IN
WIND...60MPH

$$

RUBIN

300 
WWUS55 KCYS 272337
SVSCYS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
537 PM MDT MON MAY 27 2013

NEC045-272345-
/O.CON.KCYS.SV.W.0028.000000T0000Z-130527T2345Z/
DAWES NE-
537 PM MDT MON MAY 27 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN DAWES
COUNTY UNTIL 545 PM MDT...

AT 535 PM MDT...A SEVERE THUNDERSTORM WAS LOCATED 8 MILES EAST OF
CRAWFORD...AND MOVING NORTHEAST AT 25 MPH.

HAZARD...QUARTER SIZE HAIL AND 60 MPH WIND GUSTS.

SOURCE...RADAR INDICATED.

IMPACT...HAIL DAMAGE TO VEHICLES AND CROPS IS EXPECTED. EXPECT WIND
         DAMAGE TO ROOFS...SIDING AND TREES.

THE SEVERE THUNDERSTORM WILL AFFECT MAINLY RURAL AREAS OF SOUTHERN
DAWES COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPORT SEVERE WEATHER CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY.
THEY WILL SEND YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN
CHEYENNE.

&&

LAT...LON 4262 10330 4269 10333 4281 10278 4245 10278
TIME...MOT...LOC 2338Z 246DEG 21KT 4266 10325

HAIL...1.00IN
WIND...60MPH

$$

RUBIN

599 
WWUS55 KCYS 272342
SVSCYS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
542 PM MDT MON MAY 27 2013

NEC045-272352-
/O.EXP.KCYS.SV.W.0028.000000T0000Z-130527T2345Z/
DAWES NE-
542 PM MDT MON MAY 27 2013

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN DAWES COUNTY WILL
EXPIRE AT 545 PM MDT...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.

ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A SEVERE 
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM MDT.

LAT...LON 4262 10330 4269 10333 4281 10278 4245 10278
TIME...MOT...LOC 2342Z 246DEG 21KT 4267 10322

$$

RUBIN

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 Cheyenne, WY wrote its last area forecast discussion before this severe thunderstorm warning went out at May 27, 3:38 PM MDT, 1 hour 5 minutes earlier.

Area forecast discussion, May 27, 3:38 PM MDT, 1 hour 5 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHEYENNE WY
338 PM MDT MON MAY 27 2013

.SHORT TERM...(THIS EVENING THROUGH TUESDAY)
ISSUED AT 320 PM MDT MON MAY 27 2013

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT ACROSS WESTERN
NEBRASKA LATE THIS AFTERNOON THROUGH LATE THIS EVENING. HAVE ONLY
HAD ONE OR TWO STRONG STORMS SO FAR...WITH THE CURRENT STORMS
PRODUCING QUITE A BIT OF LIGHTNING. CURRENT DEWPOINTS ARE STILL IN
THE UPPER 50S TO LOWER 60S ACROSS PORTIONS OF THE PANHANDLE OF
NEBRASKA...SO WILL CONTINUE TO WATCH FOR FURTHER DEVELOPMENT. SOME
DRIER AIR IS PUSHING INTO THE TORRINGTON AND SCOTTSBLUFF AREA WITH
NORTHWEST WINDS. MORE ACTIVITY IS DEVELOPING FURTHER TO THE WEST
ACROSS THE MOUNTAINS...SO WILL HAVE TO MONITOR THIS AS WELL. MAIN
CONCERNS ARE FOR GUSTY STRONG WINDS AND LARGE HAIL.

MODELS SHOW DRIER AIR PUSHING ACROSS THE AREA TONIGHT WHICH SHOULD
LIMIT FOG POTENTIAL...ALTHOUGH LOW STRATUS CLOUDS ARE POSSIBLE
ACROSS THE NORTHERN PANHANDLE TONIGHT WITH COOL MINIMUM TEMPERATURES.

FOR TUESDAY AND WEDNESDAY...ALL MODELS INDICATE A MORE WIDESPREAD
COVERAGE OF SHOWERS AND THUNDERSTORMS AS THE MAIN PACIFIC UPPER
LEVEL TROUGH PUSHES INTO WYOMING. FOCUS ON TUESDAY WILL BE THE
HIGH PLAINS AS A VIGOROUS SHORTWAVE...AHEAD OF THE MAIN TROUGH...EJECTS
NORTHEAST ACROSS HIGH PLAINS OF COLORADO AND WYOMING IN THE
AFTERNOON. MODELS CONTINUE TO INDICATE DEEP MOISTURE AND LIFT WITH
CAPE VALUES OVER 1000 J/KG AND PW/S AROUND 1 INCH. THERE IS THE
POTENTIAL FOR SEVERE WEATHER EAST OF A LINE FROM CHEYENNE TO
DOUGLAS WYOMING. HOWEVER...THE LAST FEW EVENTS HAVE ONLY RESULTED
IN A FEW STRONG TO SEVERE STORMS...SO WILL NOT WORD THE FORECAST
TOO AGGRESSIVE AT THIS TIME. HEAVY RAIN IS POSSIBLE WITH THESE
STORMS AS MODELS ARE SHOWING HIGH QPF VALUES AND THE POTENTIAL FOR
SOME OF THESE THUNDERSTORMS TO PRODUCE OVER ONE INCH OF RAIN IN A
SHORT PERIOD OF TIME. THE THUNDERSTORM THREAT WILL BE LOWER ON
WEDNESDAY AS COOLER AIR MOVES INTO THE REGION...ALTHOUGH THE
THREAT FOR HEAVY RAIN WILL STILL BE ONGOING ACROSS THE HIGH
PLAINS. TEMPERATURES ON WEDNESDAY WILL BE MUCH COOLER...AND
GENERALLY IN THE 60S TO LOW 70S. PATCHY FOG AND LOW CLOUDS WILL
RETURN TO THE HIGH PLAINS OF SOUTHEAST WYOMING AND WESTERN
NEBRASKA WEDNESDAY NIGHT.

.LONG TERM...(TUESDAY NIGHT THROUGH MONDAY)
ISSUED AT 253 PM MDT MON MAY 27 2013

UPPER TROF/LOW WILL SWING EAST OF THE CWA DURING THE DAY THURSDAY
BUT SOME WRAP-AROUND MOISTURE SHOULD KEEP SOME SHOWERS AND A FEW
STORMS GOING OVER AT LEAST THE NORTHERN PARTS OF THE CWA THROUGH
THURSDAY NIGHT. SECONDARY UPPER TROF WILL THEN PASS ACROSS FRIDAY
NIGHT BRINGING A COOL PUSH OF AIR. SFC UPSLOPE FLOW SHOULD SET OFF
SOME SHOWERS SATURDAY. DRY AND WARMER CONDITIONS WILL THEN SET IN
FOR SUNDAY AND CONTINUE THROUGH MONDAY UNDER A DRY WNW FLOW ALOFT.

&&

.AVIATION...(FOR THE 18Z TAFS THROUGH 18Z TUESDAY MORNING)
ISSUED AT 1125 AM MDT MON MAY 27 2013

SCTD MVFR CIGS OVER PARTS OF THE PANHANDLE LATE THIS MORNING SHOULD
BREAK UP EARLY THIS AFTERNOON.  ISOLATED SHOWERS AND TSTMS POSSIBLE
THIS AFTERNOON INTO THIS EVENING OVER SE WY WITH SOMEWHAT MORE
COVERAGE OVER THE PANHANDLE.  ACTIVITY WILL DISSIPATE THIS EVENING.
SOME RETURN OF MAINLY MVFR CIGS POSSIBLE LATER TONIGHT OVER THE
PANHANDLE BUT SHOULD NOT BE AS EXTENSIVE.

&&

.FIRE WEATHER...
ISSUED AT 253 PM MDT MON MAY 27 2013

WIDELY SCATTERED SHOWERS AND THUNDERSTORMS WILL DEVELOP THIS
AFTERNOON ACROSS THE MOUNTAINS AND EASTERN HIGH PLAINS. ANOTHER
ROUND OF SHOWERS AND THUNDERSTORMS ARE EXPECTED TUESDAY AND
WEDNESDAY BEFORE COOLER AIR MOVES INTO SOUTHEAST WYOMING AND WESTERN
NEBRASKA. FIRE WEATHER CONCERNS ARE LOW DUE TO GREEN FUELS AND
HIGHER HUMIDITIES WITH RAINFALL EXPECTED THROUGH THE MIDDLE AND
END OF THIS WEEK AS A STRONGER PACIFIC STORM SYSTEM PUSHES ACROSS
THE REGION STARTING ON TUESDAY AND CONTINUING THROUGH FRIDAY...LIKELY
BRINGING WETTING RAINS AND COOLER TEMPERATURES TO THE AREA.

&&

.CYS WATCHES/WARNINGS/ADVISORIES...
WY...NONE.
NE...NONE.
&&

SHORT TERM...TJT
LONG TERM...RE
AVIATION...RE
FIRE WEATHER...TJT

Hazardous weather outlook, May 27, 2:01 PM MDT, 2 hours 42 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHEYENNE WY
201 PM MDT MON MAY 27 2013

WYZ101>119-282015-
CONVERSE COUNTY LOWER ELEVATIONS-NIOBRARA COUNTY-
NORTH LARAMIE RANGE-FERRIS/SEMINOE/SHIRLEY MOUNTAINS-
SHIRLEY BASIN-CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY-
EAST PLATTE COUNTY-GOSHEN COUNTY-CENTRAL CARBON COUNTY-
NORTH SNOWY RANGE FOOTHILLS-SOUTHWEST CARBON COUNTY-
SIERRA MADRE RANGE-UPPER NORTH PLATTE RIVER BASIN-SNOWY RANGE-
LARAMIE VALLEY-SOUTH LARAMIE RANGE-SOUTH LARAMIE RANGE FOOTHILLS-
CENTRAL LARAMIE COUNTY-EAST LARAMIE COUNTY-
201 PM MDT MON MAY 27 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST WYOMING.

.DAY ONE...THIS AFTERNOON AND TONIGHT

ISOLATED THUNDERSTORMS WILL DEVELOP ACROSS SOUTHEAST WYOMING THIS
AFTERNOON...WITH GUSTY WINDS AROUND 40 MPH POSSIBLE WITH THE STORMS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

ISOLATED TO SCATTERED AFTERNOON AND EVENING THUNDERSTORMS ARE
FORECAST THROUGH MOST OF THE WEEK. A FEW STRONG THUNDERSTORMS ARE
POSSIBLE ON TUESDAY ACROSS THE EASTERN PLAINS OF
WYOMING...OTHERWISE THE PROBABILITY OF SEVERE WEATHER IS LOW FOR
THE REMAINDER OF THE WEEK.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY AND TONIGHT.

&&

THIS PRODUCT...ALONG WITH OTHER WEATHER...HYDROLOGIC...AND
CLIMATE INFORMATION IS AVAILABLE ON THE WEB AT...
HTTP://WEATHER.GOV/CHEYENNE

NEZ002-003-019>021-054-055-095-096-282015-
DAWES-BOX BUTTE-SCOTTS BLUFF-BANNER-MORRILL-KIMBALL-CHEYENNE-
NORTH SIOUX-SOUTH SIOUX-
201 PM MDT MON MAY 27 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WESTERN NEBRASKA
PANHANDLE.

.DAY ONE...THIS AFTERNOON AND TONIGHT

SHOWERS AND THUNDERSTORMS WILL CONTINUE TO DEVELOP OVER WESTERN
NEBRASKA THIS AFTERNOON. SOME OF THESE STORMS WILL BECOME SEVERE
WITH LARGE HAIL AND DAMAGING WINDS POSSIBLE INTO LATE THIS
EVENING. A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 9 PM
MDT THIS EVENING.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

ISOLATED TO SCATTERED AFTERNOON AND EVENING THUNDERSTORMS ARE
FORECAST THROUGH MOST OF THE WEEK. SOME STRONG THUNDERSTORMS WILL BE
POSSIBLE TUESDAY AFTERNOON ACROSS MUCH OF THE PANHANDLE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NEEDED TONIGHT FOR THE POTENTIAL OF SEVERE
THUNDERSTORMS.

&&

THIS PRODUCT...ALONG WITH OTHER WEATHER...HYDROLOGIC...AND
CLIMATE INFORMATION IS AVAILABLE ON THE WEB AT...
HTTP://WEATHER.GOV/CHEYENNE

TT

In the hours before

Local storm report, May 27, 4:04 PM MDT, 39 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
404 PM MDT MON MAY 27 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0400 PM     FUNNEL CLOUD     25 N SCOTTSBLUFF        42.23N 103.66W
05/27/2013                   SIOUX              NE   BROADCAST MEDIA

            RELAYED VIA KNEB.

&&

GCLAYCOM

Special weather statement, May 27, 4:11 PM MDT, 32 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
411 PM MDT MON MAY 27 2013

NEZ002-272315-
DAWES NE-
411 PM MDT MON MAY 27 2013

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN DAWES COUNTY UNTIL 515 PM
MDT...

AT 407 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 6 MILES SOUTHEAST OF RED CLOUD CAMPGROUND...OR 12
MILES WEST OF HAY SPRINGS...MOVING NORTHEAST AT 5 MPH.

HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THIS STORM.

THIS STORM WILL BE NEAR...
RURAL EASTERN DAWES COUNTY THROUGH 515 PM MDT

THIS STORM MAY INTENSIFY...AND A SEVERE THUNDERSTORM WATCH IS IN
EFFECT UNTIL 900 PM MDT. 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.

&&

LAT...LON 4258 10289 4265 10297 4278 10291 4280 10278
      4279 10277 4268 10277
TIME...MOT...LOC 2211Z 218DEG 4KT 4264 10291

RUBIN

Local storm report, May 27, 4:14 PM MDT, 29 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
414 PM MDT MON MAY 27 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0344 PM     TORNADO          17 SE HARRISON          42.51N 103.65W
05/27/2013                   SIOUX              NE   LAW ENFORCEMENT

            LAW ENFORCEMENT REPORTED A TORNADO ON THE GROUND 15 TO 20
            MILES SOUTHEAST OF HARRISON. REPORTER WAS ON HIGHWAY 71
            LOOKING SOUTH.

&&

TTRUDEL

Local storm report, May 27, 4:19 PM MDT, 24 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
419 PM MDT MON MAY 27 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0350 PM     HAIL             LODGEPOLE               41.15N 102.64W
05/27/2013  E1.00 INCH       CHEYENNE           NE   TRAINED SPOTTER

            AND RAIN OVER AN INCH.

&&

DDEAL

Local storm report, May 27, 4:31 PM MDT, 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
431 PM MDT MON MAY 27 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0420 PM     HAIL             15 W HEMINGFORD         42.32N 103.37W
05/27/2013  E1.00 INCH       BOX BUTTE          NE   TRAINED SPOTTER

            HALF INCH TO QUARTER SIZED HAIL. GRASS IS COVERED WITH
            HAIL. 0.5 INCHES OF NEW RAINFALL.

&&

GCLAYCOM

Special weather statement, May 27, 4:32 PM MDT, 11 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
432 PM MDT MON MAY 27 2013

NEZ002-095-272330-
DAWES NE-NORTH SIOUX NE-
432 PM MDT MON MAY 27 2013

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN SIOUX AND DAWES COUNTIES
UNTIL 530 PM MDT...

AT 430 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR CRAWFORD...OR 21 MILES SOUTHWEST OF
CHADRON...MOVING NORTHEAST AT 20 MPH.

HAIL UP TO THE SIZE OF NICKELS AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN.

THIS STORM WILL BE NEAR...
WHITNEY LAKE AROUND 455 PM MDT.
WHITNEY AROUND 500 PM MDT.
CHADRON AIRPORT AROUND 525 PM MDT.
CHADRON AROUND 530 PM MDT.

THIS STORM MAY INTENSIFY...AND A SEVERE THUNDERSTORM WATCH IS IN
EFFECT UNTIL 900 PM MDT. 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.

TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED
ROADWAY.

&&

LAT...LON 4301 10314 4279 10290 4244 10343 4254 10361
TIME...MOT...LOC 2233Z 224DEG 17KT 4266 10332

RUBIN

The office that day

Everything else NWS Cheyenne, WY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 26, 8:01 PM MDT	Severe Thunderstorm Warning	CYS	Sioux	44 min
May 26, 8:30 PM MDT	Special Weather Statement	CYS	Scotts Bluff	45 min
May 26, 9:05 PM MDT	Special Weather Statement	CYS	Scotts Bluff	25 min
May 26, 9:22 PM MDT	Severe Thunderstorm Warning	CYS	Banner, Morrill, Scotts Bluff	38 min
May 26, 9:53 PM MDT	Special Weather Statement	CYS	Scotts Bluff	52 min
May 26, 10:16 PM MDT	Special Weather Statement	CYS	Box Butte	44 min
May 27, 2:00 PM MDT	Special Weather Statement	CYS	Banner	60 min
May 27, 2:05 PM MDT	Tornado Warning Tornado observed	CYS	Banner, Kimball	25 min
May 27, 2:28 PM MDT	Tornado Warning Tornado observed	CYS	Banner, Cheyenne, Kimball, Morrill	32 min
May 27, 2:57 PM MDT	Special Weather Statement	CYS	Cheyenne	48 min
May 27, 3:33 PM MDT	Special Weather Statement	CYS	Banner	42 min
May 27, 3:36 PM MDT	Special Weather Statement	CYS	Morrill	39 min
May 27, 3:38 PM MDT	Special Weather Statement	CYS	Box Butte	52 min
May 27, 3:45 PM MDT	Severe Thunderstorm Warning	CYS	Cheyenne, Morrill	60 min
May 27, 3:57 PM MDT	Severe Thunderstorm Warning	CYS	Box Butte, Dawes, Sioux	63 min
May 27, 4:02 PM MDT	Tornado Warning Tornado observed	CYS	Box Butte, Dawes, Sioux	28 min
May 27, 4:11 PM MDT	Special Weather Statement	CYS	Dawes	64 min
May 27, 4:32 PM MDT	Special Weather Statement	CYS	Dawes	58 min
May 27, 4:46 PM MDT	Special Weather Statement	CYS	Box Butte	59 min
May 27, 4:47 PM MDT	Special Weather Statement	CYS	Box Butte	58 min
May 27, 5:28 PM MDT	Special Weather Statement	CYS	Box Butte	62 min
May 27, 5:35 PM MDT	Special Weather Statement	CYS	Scotts Bluff	40 min
May 27, 5:48 PM MDT	Special Weather Statement	CYS	Box Butte	57 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2013 Every severe thunderstorm warning in 2013

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.