Alert archive / Nebraska / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 11, NWS North Platte, NE
NWS North Platte, NE issued this severe thunderstorm warning at May 18, 1990, 6:56 PM MDT for Arthur County, Grant County, Hooker County, Nebraska. It was in force for 64 min.
The area
The counties it named.
The facts
- Issued
- May 18, 1990, 6:56 PM MDT (00:56 UTC)
- Expired
- May 18, 1990, 8:00 PM MDT
- In force
- 64 min
- Issued by
- NWS North Platte, NE
- Area
- Whole counties
Counties Arthur County, NE, Grant County, NE, Hooker County, NE
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.9 hours before the alert went out and 107 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 0 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 182 m²/s²
- 0-3 km storm-relative helicity
- 360 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 5.5
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 18, 3:44 PM MDT, 3 hours 12 minutes before
NEZ007-182330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 440 PM CDT FRI MAY 18 1990 ...TORNADO WATCH UNTIL 10PM CDT FOR SOUTHWEST NEBRASKA... AT 440 PM CDT...WIDELY SCATTERD THUNDERSTORMS WERE DEVELOPING OVER SOUTHWEST NEBRASKA. THESE THUNDERSTORMS WERE JUST SOUTH AND EAST OF IMPERIAL OR 55 MILES SOUTHWEST OF NORTH PLATTE. ANOTHER JUST SOUTH OF OGALLALA OR 46 MILES WEST OF NORTH PLATTE. THESE THUNDERSTORMS WERE MOVINGM NORTHEAST AT 30 MILES PER HOUR MOVING ACROSS EASTERN CHASE AND CENTRAL KEITH COUNTIES. LOCALIZED HEAVY RAINFALL...STRONG GUSTY WINDS...AND SMALL HAIL WILL BE POSSIBLE UNTIL 515PM CDT OR 415 MDT. ACH.
Special weather statement, May 18, 4:29 PM MDT, 2 hours 27 minutes before
NEZ0006-007-012-017-190025- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 525 PM CDT FRI MAY 18 1990 ...TORNADO WATCH UNTIL 10PM CDT FOR SOUTHWEST NEBRASKA... SCATTERED THUNDERSTORMS...SOME QUITE HEAVY...CONTINUED OVER A GOOD PART OF SOUTHWEST AND WESTCENTRAL NEBRASKA. THE STRONGEST STORMS WERE 25 MILES SOUTHWEST OF NORTH PLATTE AND 70 MILES SOUTH OF NORTH PLATTE AND WERE MOVING NORTHEAST AT 25 MPH. THESE STORMS MAY CONTAIN HAIL...STRONG WINDS AND LIGHTNING. RC
The office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 18, 6:05 PM MDT | Severe Thunderstorm Warning | LBF | Cedar, Knox | 55 min |
| May 18, 6:07 PM MDT | Severe Thunderstorm Warning | LBF | Cherry | 68 min |
| May 18, 6:12 PM MDT | Tornado Warning | LBF | Lincoln | 33 min |
| May 18, 6:38 PM MDT | Tornado Warning | LBF | Frontier, Red Willow | 37 min |
| May 18, 6:44 PM MDT | Tornado Warning | LBF | Lincoln | 31 min |
| May 18, 7:59 PM MDT | Tornado Warning | LBF | Red Willow | 31 min |
| May 18, 8:05 PM MDT | Severe Thunderstorm Warning | LBF | Thomas | 55 min |
| May 18, 8:29 PM MDT | Tornado Warning | LBF | Red Willow | 31 min |
Nearby
Severe Thunderstorm Warnings in Nebraska, 1990Every severe thunderstorm warning in 1990
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.