Alert archive / Nebraska / Severe Thunderstorm Warnings in 1991
Severe Thunderstorm Warning 30, NWS North Platte, NE
NWS North Platte, NE issued this severe thunderstorm warning at May 30, 1991, 9:45 PM CDT for Garfield County, Loup County, Nebraska. It was in force for 60 min. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- May 30, 1991, 9:45 PM CDT (02:45 UTC)
- Expired
- May 30, 1991, 10:45 PM CDT
- In force
- 60 min
- Issued by
- NWS North Platte, NE
- Area
- Whole counties
Counties Garfield County, NE, Loup County, NE
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 30, 10:45 PM CDT | Tornado F0 | Loup, NE | |
| May 30, 10:45 PM CDT | Tornado F0 | Garfield, NE |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 2.8 hours before the alert went out and 144 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
- 2074 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 1228 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 106 m²/s²
- 0-3 km storm-relative helicity
- 194 m²/s²
- Significant tornado parameter
- 1.1
- Supercell composite
- 9.2
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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.
In the hours before
Special weather statement, May 30, 8:57 PM CDT, 48 minutes before
NEZ007-310255- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 855 PM CDT THU MAY 30 1991 ...THUNDERSTORMS DEVELOPING ACROSS SOUTHEAST CUSTER COUNTY... LATEST RADAR OBSERVATIONS SHOWED THUNDERSTORMS DEVELOPING RAPIDLY ACROSS NORTHEAST DAWSON COUNTY ABOUT 30 MILES SOUTH OF BROKEN BOW NEBRASKA. THESE THUNDERSTORMS WILL BE MOVING NORTH AT 25 MILES AN HOUR INTO SOUTHERN CUSTER COUNTY. PERSONS IN THE TOWN OF ANSLEY SHOULD PREPARE FOR THUNDERSTORMS WITH VERY HEAVY RAIN...STRONG GUSTY WINDS...LARGE HAIL AND POSSIBLE TORNADOES BY 940 PM CDT. ANOTHER THUNDERSTORM WAS DEVELOPING NEAR THE TOWN OF OCONTO...WHICH IS 40 MILES EAST OF NORTH PLATTE. REMEMBER A TORNADO WATCH REMAIXNS IN EFFECT FOR MUCH OF SOUTHWEST AND WEST CENTRAL NEBRASKA UNTIL 2 AM CDT. SC
Special weather statement, May 30, 9:00 PM CDT, 45 minutes before
NEZ007-310255- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 855 PM CDT THU MAY 30 1991 ...THUNDERSTORMS DEVELOPING ACROSS SOUTHEAST CUSTER COUNTY... AT 850 PM CDT...LATEST RADAR OBSERVATIONS SHOWED THUNDERSTORMS DEVELOPING RAPIDLY ACROSS NORTHEAST DAWSON COUNTY ABOUT 30 MILES SOUTH OF BROKEN BOW NEBRASKA. THESE THUNDERSTORMS WILL BE MOVING NORTH AT 25 MILES AN HOUR INTO SOUTHERN CUSTER COUNTY. PERSONS IN THE TOWN OF ANSLEY SHOULD PREPARE FOR THUNDERSTORMS WITH VERY HEAVY RAIN...STRONG GUSTY WINDS...LARGE HAIL AND POSSIBLE TORNADOES BY 940 PM CDT. ANOTHER THUNDERSTORM WAS DEVELOPING NEAR THE TOWN OF OCONTO...WHICH IS 40 MILES EAST OF NORTH PLATTE. REMEMBER A_ TORNADO WATCH REMAINS IN EFFECT FOR MUCH OF SOUTHWEST AND WEST CENTRAL NEBRASKA UNTIL 2 AM CDT. SC
The office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 30, 9:25 PM CDT | Severe Thunderstorm Warning | LBF | Custer | 65 min |
| May 30, 9:37 PM CDT | Tornado Warning | LBF | Custer | 38 min |
| May 30, 10:02 PM CDT | Tornado Warning | LBF | Garfield, Loup | 28 min |
| May 30, 10:16 PM CDT | Tornado Warning | LBF | Custer | 29 min |
| May 30, 10:38 PM CDT | Severe Thunderstorm Warning | LBF | Garfield, Holt, Loup | 67 min |
| May 30, 10:50 PM CDT | Tornado Warning | LBF | Custer | 10 min |
| May 30, 10:53 PM CDT | Tornado Warning | LBF | Garfield, Loup | 37 min |
| May 30, 11:58 PM CDT | Severe Thunderstorm Warning | LBF | Madison | 32 min |
| May 31, 12:08 AM CDT | Tornado Warning | LBF | Madison, Stanton | 37 min |
| May 31, 12:52 AM CDT | Tornado Warning | LBF | Madison, Stanton | 23 min |
Nearby
Severe Thunderstorm Warnings in Nebraska, 1991Every severe thunderstorm warning in 1991
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.