Alert archive / Nebraska / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 12, NWS North Platte, NE
NWS North Platte, NE issued this severe thunderstorm warning at May 18, 1990, 9:05 PM CDT for Thomas County, Nebraska. It was in force for 55 min. 1 report 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 18, 1990, 9:05 PM CDT (02:05 UTC)
- Expired
- May 18, 1990, 10:00 PM CDT
- In force
- 55 min
- Issued by
- NWS North Platte, NE
- Area
- Whole counties
County Thomas County, NE
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 18, 9:45 PM CDT | Hail 1.75 | Thomas, 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, 2.1 hours before the alert went out and 87 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
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KLBF 190205
SVRLBF
NEC171-190300-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
905 PM CDT FRI MAY 18 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 1000 PM CDT FOR PEOPLE IN THE FOLLOWING
COUNTY
IN THE NORTH CENTRAL PART OF NEBRASKA
THOMAS
AT 848 PM CDT THE TOWN OF THEDFORD REPORTED GOLF BALL SIZE HAIL
COVERING THE GROUND ALONG WITH VERY HEAVY RAIN AND STRONG WINDS.
THEDFORD IS ABOUT 50 MILES NORTH OF NORTH PLATTE.
THIS THUNDERSTORM IS MOVING NORTH AT 40 MILES AN HOUR.
IF YOU ARE IN THE AREA THREATENED BY THE STORM...GO TO A REINFORCED
SHELTER AND PREPARE FOR STRONG DAMAGING WIND...LARGE HAIL...VERY
HEAVY RAIN...AND DEADLY LIGHTNING.
REMEMBER...SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE A
TORNADO WITH LITTLE OR NO ADVANCE WARNING SO BE ON THE LOOKOUT!!
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER...
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING. REMAIN CALM BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.
TORNADO WATCH REMAIN IN EFFECT FOR SOUTHWEST NEBRASKA UNTIL 10 PM
CD T.
X
MONSON 0203ZWhat 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, 4:44 PM CDT, 4 hours 21 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, 5:29 PM CDT, 3 hours 36 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, 7:05 PM CDT | Severe Thunderstorm Warning | LBF | Cedar, Knox | 55 min |
| May 18, 7:07 PM CDT | Severe Thunderstorm Warning | LBF | Cherry | 68 min |
| May 18, 7:12 PM CDT | Tornado Warning | LBF | Lincoln | 33 min |
| May 18, 7:38 PM CDT | Tornado Warning | LBF | Frontier, Red Willow | 37 min |
| May 18, 7:44 PM CDT | Tornado Warning | LBF | Lincoln | 31 min |
| May 18, 7:56 PM CDT | Severe Thunderstorm Warning | LBF | Arthur, Grant, Hooker | 64 min |
| May 18, 8:59 PM CDT | Tornado Warning | LBF | Red Willow | 31 min |
| May 18, 9:29 PM CDT | 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.