Alert archive / Nebraska / Severe Thunderstorm Warnings in 2008
Severe Thunderstorm Warning 13, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at May 7, 2008, 7:55 PM MDT for Goshen County, Wyoming; Scotts Bluff County, Sioux 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 outline as issued.
The facts
- Issued
- May 7, 2008, 7:55 PM MDT (01:55 UTC)
- Expired
- May 7, 2008, 8:45 PM MDT
- In force
- 50 min
- Issued by
- NWS Cheyenne, WY
- Area
- Storm-based polygon
Counties Scotts Bluff County, NE, Sioux County, NE, Goshen County, WY
The radar
The Cheyenne radar (KCYS), 113 km from the middle of the area, began a volume at 01:58 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.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 7, 12:52 PM MST | Tornado Watch | SPC | 146 days |
The nearest sounding before it
Denver, CO (KDNR), launched 00:00Z, 1.9 hours before the alert went out and 239 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
- 373 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 1767 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 32 m²/s²
- 0-3 km storm-relative helicity
- 3 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS55 KCYS 080156 SVRCYS NEC157-165-WYC015-080245- /O.NEW.KCYS.SV.W.0013.080508T0155Z-080508T0245Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CHEYENNE WY 755 PM MDT WED MAY 7 2008 THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... WESTERN SCOTTS BLUFF COUNTY IN THE PANHANDLE OF NEBRASKA... THIS INCLUDES THE CITY OF SCOTTSBLUFF... SOUTHWESTERN SIOUX COUNTY IN THE PANHANDLE OF NEBRASKA... CENTRAL GOSHEN COUNTY IN SOUTHEAST WYOMING... * UNTIL 845 PM MDT * AT 749 PM MDT...TRAINED WEATHER SPOTTERS REPORTED A SEVERE THUNDERSTORM PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED NEAR PACKER LAKE...OR 8 MILES SOUTH OF TORRINGTON...AND MOVING EAST AT 22 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... LYMAN BY 800 PM... STEGALL BY 810 PM... MORRILL BY 820 PM... MITCHELL BY 835 PM... RATTLESNAKE HILL BY 845 PM... DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM. WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM. REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE OFFICE IN CHEYENNE AT 1-800-269-6220. LAT...LON 4220 10369 4173 10360 4170 10442 4193 10440 TIME...MOT...LOC 0155Z 258DEG 19KT 4196 10410 $$ GRIFFITH
2 follow-up statements
000
WWUS55 KCYS 080223
SVSCYS
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
823 PM MDT WED MAY 7 2008
NEC157-165-WYC015-080245-
/O.CON.KCYS.SV.W.0013.000000T0000Z-080508T0245Z/
SCOTTS BLUFF NE-SIOUX NE-GOSHEN WY-
823 PM MDT WED MAY 7 2008
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM MDT
FOR EAST CENTRAL GOSHEN...SOUTHWESTERN SIOUX AND WESTERN SCOTTS BLUFF
COUNTIES...
AT 815 PM MDT...TRAINED WEATHER SPOTTERS REPORTED A SEVERE
THUNDERSTORM PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED
NEAR MORRILL...OR 13 MILES SOUTHEAST OF TORRINGTON...MOVING EAST AT
22 MPH.
THE SEVERE THUNDERSTORM WILL BE NEAR...
MITCHELL BY 835 PM...
RATTLESNAKE HILL BY 845 PM...
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.
REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE OFFICE IN
CHEYENNE AT 1-800-269-6220.
LAT...LON 4173 10360 4173 10368 4171 10387 4172 10397
4171 10399 4170 10406 4171 10424 4192 10426
4220 10370
TIME...MOT...LOC 0223Z 258DEG 19KT 4199 10391
$$
GRIFFITH000
WWUS55 KCYS 080250
SVSCYS
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
847 PM MDT WED MAY 7 2008
NEC157-165-WYC015-080257-
/O.EXP.KCYS.SV.W.0013.000000T0000Z-080508T0245Z/
SCOTTS BLUFF NE-SIOUX NE-GOSHEN WY-
847 PM MDT WED MAY 7 2008
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL GOSHEN...
SOUTHWESTERN SIOUX AND WESTERN SCOTTS BLUFF COUNTIES HAS EXPIRED...
...SEVERE THUNDERSTORM WARNING FOR EXTREME EAST CENTRAL GOSHEN
COUNTY IN WYOMING...AND FOR SCOTTS BLUFF COUNTY IN THE PANHANDLE OF
NEBRASKA CONTINUES...
THE STORM HAS EXITED PORTIONS OF THE PREVIOUSLY WARNED AREA IN
WYOMING...THEREFORE THE ORIGINAL WARNING WILL BE ALLOWED TO EXPIRE.
THE STORM REMAINS SEVERE AND HAS PROMPTED A NEW WARNING AS IT MOVES
EAST INTO NEBRASKA.
REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE OFFICE IN
CHEYENNE AT 1-800-269-6220.
LAT...LON 4173 10360 4173 10368 4171 10387 4172 10397
4171 10399 4170 10406 4171 10424 4192 10426
4220 10370
TIME...MOT...LOC 0223Z 258DEG 19KT 4199 10391
$$
SOWKOThe office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 7, 6:39 PM MDT | Severe Thunderstorm Warning | CYS | Goshen, Platte | 36 min |
| May 7, 7:17 PM MDT | Severe Thunderstorm Warning | CYS | Goshen | 43 min |
| May 7, 8:43 PM MDT | Severe Thunderstorm Warning | CYS | Goshen | 44 min |
Nearby
Severe Thunderstorm Warnings in Nebraska, 2008Severe Thunderstorm Warnings in Wyoming, 2008Every severe thunderstorm warning in 2008
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.