Alert archive / Nebraska / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 101, NWS Cheyenne, WY

July 24, 2016Scotts Bluff County, Sioux County, Nebraska; Goshen County, Wyoming

NWS Cheyenne, WY issued this severe thunderstorm warning at Jul 24, 2016, 3:15 PM MDT for Scotts Bluff County, Sioux County, Nebraska; Goshen County, Wyoming. It was in force for 34 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
Jul 24, 2016, 3:15 PM MDT (21:15 UTC)
Expired
Jul 24, 2016, 3:49 PM MDT
In force
34 min
Issued by
NWS Cheyenne, WY
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

Counties Scotts Bluff County, NE, Sioux County, NE, Goshen County, WY

The radar

The Cheyenne radar (KCYS), 91 km from the middle of the area, began a volume at 21:14 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

Denver, CO (KDEN), launched 12:00Z, 9.3 hours before the alert went out and 233 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, Denver, CO at 12:00Z on 2016-07-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 85 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 12:00Z on 2016-07-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 38 square meters per square second.19395878Sfc1 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
85 J/kg
Mixed-layer CIN
-345 J/kg
Mixed-layer LCL
2128 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
38 m²/s²
0-3 km storm-relative helicity
57 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

134 
WUUS55 KCYS 242115
SVRCYS
NEC157-165-WYC015-242215-
/O.NEW.KCYS.SV.W.0101.160724T2115Z-160724T2215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
315 PM MDT SUN JUL 24 2016

THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN SIOUX COUNTY IN THE PANHANDLE OF NEBRASKA...
  NORTHWESTERN SCOTTS BLUFF COUNTY IN THE PANHANDLE OF NEBRASKA...
  SOUTHEASTERN GOSHEN COUNTY IN SOUTHEASTERN WYOMING...

* UNTIL 415 PM MDT

* AT 314 PM MDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR HAWK SPRINGS
  RECREATION AREA...OR 25 MILES SOUTH OF TORRINGTON...MOVING NORTH AT
  35 MPH.

  HAZARD...QUARTER SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...DAMAGE TO VEHICLES IS EXPECTED. 

* THIS SEVERE THUNDERSTORM WILL BE NEAR...
  HAWK SPRINGS AROUND 325 PM MDT. 
  YODER AROUND 340 PM MDT. 
  LYMAN AND HUNTLEY AROUND 345 PM MDT. 
  TORRINGTON AROUND 405 PM MDT. 

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE HENRY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4161 10424 4166 10439 4220 10432 4209 10379
TIME...MOT...LOC 2114Z 198DEG 29KT 4170 10429 

HAIL...1.00IN
WIND...<50MPH
 
$$

RUBIN
2 follow-up statements
795 
WWUS55 KCYS 242132
SVSCYS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
332 PM MDT SUN JUL 24 2016

NEC157-165-WYC015-242215-
/O.CON.KCYS.SV.W.0101.000000T0000Z-160724T2215Z/
SIOUX NE-SCOTTS BLUFF NE-GOSHEN WY-
332 PM MDT SUN JUL 24 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM MDT
FOR SOUTHWESTERN SIOUX...NORTHWESTERN SCOTTS BLUFF AND SOUTHEASTERN
GOSHEN COUNTIES...

AT 332 PM MDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR HAWK SPRINGS
RECREATION AREA...OR 21 MILES SOUTH OF TORRINGTON...MOVING NORTHEAST
AT 35 MPH.

HAZARD...QUARTER SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...DAMAGE TO VEHICLES IS EXPECTED. 

THIS SEVERE STORM WILL BE NEAR...
  LYMAN AROUND 350 PM MDT. 
  MORRILL AROUND 400 PM MDT. 

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE HENRY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4169 10416 4179 10437 4220 10432 4209 10379
TIME...MOT...LOC 2132Z 239DEG 30KT 4176 10413 

HAIL...1.00IN
WIND...<50MPH
 
$$

RUBIN
547 
WWUS55 KCYS 242149
SVSCYS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
349 PM MDT SUN JUL 24 2016

NEC157-165-WYC015-242159-
/O.CAN.KCYS.SV.W.0101.000000T0000Z-160724T2215Z/
SIOUX NE-SCOTTS BLUFF NE-GOSHEN WY-
349 PM MDT SUN JUL 24 2016

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN SIOUX...
NORTHWESTERN SCOTTS BLUFF AND SOUTHEASTERN GOSHEN COUNTIES IS
CANCELLED...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING HAS BEEN CANCELLED.  HOWEVER SMALL HAIL....
GUSTY WINDS AND HEAVY RAIN ARE STILL POSSIBLE WITH THIS THUNDERSTORM.

LAT...LON 4169 10416 4179 10437 4220 10432 4209 10379
TIME...MOT...LOC 2147Z 198DEG 29KT 4189 10407 

$$

RUBIN

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 23, 6:04 PM MDTSpecial Weather StatementCYSCheyenne41 min
Jul 24, 2:26 PM MDTSpecial Weather StatementCYSScotts Bluff49 min
Jul 24, 2:48 PM MDTSpecial Weather StatementCYSScotts Bluff42 min
Jul 24, 3:30 PM MDTSpecial Weather StatementCYSKimball45 min
Jul 24, 3:43 PM MDTAreal Flood AdvisoryCYSKimball3 hr
Jul 23, 8:58 PM MDTSpecial Weather StatementCYSLaramie47 min
Jul 24, 1:30 PM MDTSpecial Weather StatementCYSLaramie45 min
Jul 24, 1:33 PM MDTSevere Thunderstorm WarningCYSGoshen, Laramie, Platte57 min
Jul 24, 2:37 PM MDTSpecial Weather StatementCYSGoshen53 min
Jul 24, 2:42 PM MDTSpecial Weather StatementCYSLaramie48 min
Jul 24, 2:46 PM MDTSevere Thunderstorm WarningCYSLaramie59 min
Jul 24, 5:55 PM MDTSpecial Weather StatementCYSNiobrara50 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2016Severe Thunderstorm Warnings in Wyoming, 2016Every severe thunderstorm warning in 2016

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.