Alert archive / Nebraska / Severe Thunderstorm Warnings in 2015
Severe Thunderstorm Warning 21, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Jun 1, 2015, 6:25 PM MDT for Cheyenne County, Nebraska. It was in force for 35 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
- Jun 1, 2015, 6:25 PM MDT (00:25 UTC)
- Expired
- Jun 1, 2015, 7:00 PM MDT
- In force
- 35 min
- Issued by
- NWS Cheyenne, WY
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
County Cheyenne County, NE
The radar
The Cheyenne radar (KCYS), 144 km from the middle of the area, began a volume at 00:28 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 |
|---|---|---|---|
| Jun 1, 6:33 PM MDT | HAIL 1 | 7 S Sidney, NE |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Denver, CO (KDEN), launched 00:00Z, 0.4 hours before the alert went out and 141 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
- 77 J/kg
- Mixed-layer CIN
- -209 J/kg
- Mixed-layer LCL
- 2625 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 176 m²/s²
- 0-3 km storm-relative helicity
- 183 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.8
The text
As transmitted, in the capitals the NWS used until 2016.
628
WUUS55 KCYS 020025
SVRCYS
NEC033-020100-
/O.NEW.KCYS.SV.W.0021.150602T0025Z-150602T0100Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
625 PM MDT MON JUN 1 2015
THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHERN CHEYENNE COUNTY IN THE PANHANDLE OF NEBRASKA...
* UNTIL 700 PM MDT
* AT 625 PM MDT...A SEVERE THUNDERSTORM WAS LOCATED OVER SIDNEY
AIRPORT...OR NEAR SIDNEY...MOVING NORTH AT 20 MPH.
HAZARD...QUARTER SIZE HAIL.
SOURCE...RADAR INDICATED.
IMPACT...DAMAGE TO VEHICLES IS EXPECTED.
* LOCATIONS IMPACTED INCLUDE...
SIDNEY...LORENZO...SIDNEY AIRPORT...COLTON AND BROWNSON.
THIS INCLUDES INTERSTATE 80 IN NEBRASKA BETWEEN MILE MARKERS 44 AND
66.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
PREPARE IMMEDIATELY FOR LARGE HAIL AND DEADLY CLOUD TO GROUND
LIGHTNING. SEEK SHELTER INSIDE A WELL-BUILT STRUCTURE. STAY AWAY FROM
WINDOWS.
TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.
&&
LAT...LON 4102 10329 4114 10326 4130 10317 4129 10280
4127 10275 4100 10289 4100 10328
TIME...MOT...LOC 0025Z 192DEG 19KT 4107 10301
HAIL...1.00IN
WIND...<50MPH
$$
LIEBL4 follow-up statements
886
WWUS55 KCYS 020032
SVSCYS
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
632 PM MDT MON JUN 1 2015
NEC033-020100-
/O.CON.KCYS.SV.W.0021.000000T0000Z-150602T0100Z/
CHEYENNE NE-
632 PM MDT MON JUN 1 2015
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM MDT
FOR SOUTHERN CHEYENNE COUNTY...
AT 632 PM MDT...A SEVERE THUNDERSTORM WAS LOCATED OVER SIDNEY...
MOVING NORTH AT 25 MPH.
HAZARD...HALF DOLLAR SIZE HAIL.
SOURCE...RADAR INDICATED.
IMPACT...DAMAGE TO VEHICLES IS EXPECTED.
LOCATIONS IMPACTED INCLUDE...
SIDNEY...LORENZO...SIDNEY AIRPORT...COLTON AND BROWNSON.
THIS INCLUDES INTERSTATE 80 IN NEBRASKA BETWEEN MILE MARKERS 44 AND
66.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
PREPARE IMMEDIATELY FOR LARGE HAIL AND DEADLY CLOUD TO GROUND
LIGHTNING. SEEK SHELTER INSIDE A WELL-BUILT STRUCTURE. STAY AWAY FROM
WINDOWS.
TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.
&&
LAT...LON 4102 10329 4114 10326 4130 10317 4129 10280
4127 10275 4100 10289 4100 10328
TIME...MOT...LOC 0032Z 196DEG 20KT 4113 10298
HAIL...1.25IN
WIND...<50MPH
$$
LIEBL977
WWUS55 KCYS 020041
SVSCYS
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
641 PM MDT MON JUN 1 2015
NEC033-020100-
/O.CON.KCYS.SV.W.0021.000000T0000Z-150602T0100Z/
CHEYENNE NE-
641 PM MDT MON JUN 1 2015
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM MDT
FOR SOUTHERN CHEYENNE COUNTY...
AT 639 PM MDT...A SEVERE THUNDERSTORM WAS LOCATED OVER SIDNEY
AIRPORT AND OVER SIDNEY...MOVING EAST AT 20 MPH. AT 633 PM MDT...
TRAINED STORM SPOTTERS REPORTED 1 INCH SIZED HAIL 7 MILES SOUTH OF
SIDNEY.
HAZARD...QUARTER SIZE HAIL.
SOURCE...RADAR INDICATED.
IMPACT...DAMAGE TO VEHICLES IS EXPECTED.
LOCATIONS IMPACTED INCLUDE...
SIDNEY...LORENZO...SIDNEY AIRPORT...COLTON AND BROWNSON.
THIS INCLUDES INTERSTATE 80 IN NEBRASKA BETWEEN MILE MARKERS 44 AND
66.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
PREPARE IMMEDIATELY FOR LARGE HAIL AND DEADLY CLOUD TO GROUND
LIGHTNING. SEEK SHELTER INSIDE A WELL-BUILT STRUCTURE. STAY AWAY FROM
WINDOWS.
TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.
&&
LAT...LON 4102 10329 4114 10326 4130 10317 4129 10280
4127 10275 4100 10289 4100 10328
TIME...MOT...LOC 0039Z 255DEG 16KT 4112 10301
HAIL...1.00IN
WIND...<50MPH
$$
LIEBL241
WWUS55 KCYS 020051
SVSCYS
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
651 PM MDT MON JUN 1 2015
NEC033-020100-
/O.CON.KCYS.SV.W.0021.000000T0000Z-150602T0100Z/
CHEYENNE NE-
651 PM MDT MON JUN 1 2015
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM MDT
FOR SOUTHEASTERN CHEYENNE COUNTY...
AT 650 PM MDT...A SEVERE THUNDERSTORM WAS LOCATED OVER LORENZO...OR 7
MILES SOUTH OF SIDNEY...MOVING EAST AT 15 MPH.
HAZARD...QUARTER SIZE HAIL AND 60 MPH WIND GUSTS.
SOURCE...RADAR INDICATED.
IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO
ROOFS...SIDING AND TREES.
LOCATIONS IMPACTED INCLUDE...
SIDNEY...LORENZO...SIDNEY AIRPORT AND COLTON.
THIS INCLUDES INTERSTATE 80 IN NEBRASKA BETWEEN MILE MARKERS 55 AND
66.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
PREPARE IMMEDIATELY FOR LARGE HAIL AND DEADLY CLOUD TO GROUND
LIGHTNING. SEEK SHELTER INSIDE A WELL-BUILT STRUCTURE. STAY AWAY FROM
WINDOWS.
TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.
&&
LAT...LON 4102 10313 4106 10310 4117 10303 4128 10280
4126 10275 4100 10289 4100 10310
TIME...MOT...LOC 0050Z 251DEG 14KT 4103 10299
HAIL...1.00IN
WIND...60MPH
$$
LIEBL048
WWUS55 KCYS 020056
SVSCYS
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
656 PM MDT MON JUN 1 2015
NEC033-020106-
/O.EXP.KCYS.SV.W.0021.000000T0000Z-150602T0100Z/
CHEYENNE NE-
656 PM MDT MON JUN 1 2015
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CHEYENNE COUNTY
WILL EXPIRE AT 700 PM MDT...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE. HOWEVER GUSTY WINDS
ARE STILL POSSIBLE WITH THIS THUNDERSTORM.
LAT...LON 4102 10313 4106 10310 4117 10303 4128 10280
4126 10275 4100 10289 4100 10310
TIME...MOT...LOC 0055Z 192DEG 19KT 4103 10299
$$
HAHNThe office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 1, 6:19 PM MDT | Special Weather Statement | CYS | Cheyenne | 41 min |
| Jun 1, 7:00 PM MDT | Severe Thunderstorm Warning | CYS | Cheyenne | 30 min |
| Jun 2, 3:33 PM MDT | Special Weather Statement | CYS | Sioux | 42 min |
| Jun 2, 3:47 PM MDT | Special Weather Statement | CYS | Sioux | 43 min |
| Jun 2, 3:48 PM MDT | Special Weather Statement | CYS | Sioux | 42 min |
| Jun 2, 3:56 PM MDT | Severe Thunderstorm Warning | CYS | Dawes, Sioux | 47 min |
| Jun 2, 4:31 PM MDT | Special Weather Statement | CYS | Dawes | 44 min |
| Jun 2, 4:36 PM MDT | Severe Thunderstorm Warning | CYS | Box Butte, Dawes, Sioux | 54 min |
| Jun 2, 4:39 PM MDT | Areal Flood Advisory | CYS | Dawes, Sioux | 3 hr |
| Jun 2, 4:56 PM MDT | Special Weather Statement | CYS | Dawes | 49 min |
| Jun 2, 5:04 PM MDT | Special Weather Statement | CYS | Box Butte | 41 min |
| Jun 2, 5:28 PM MDT | Special Weather Statement | CYS | Box Butte | 47 min |
| Jun 2, 5:35 PM MDT | Severe Thunderstorm Warning | CYS | Box Butte, Dawes | 31 min |
| Jun 2, 5:42 PM MDT | Flash Flood Warning | CYS | Box Butte, Dawes | 5 hr |
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.