Alert archive / Nebraska / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 73, NWS Hastings, NE

May 22, 1999Hamilton County, Polk County, York County, Nebraska

NWS Hastings, NE issued this severe thunderstorm warning at May 22, 1999, 5:55 PM CDT for Hamilton County, Polk County, York County, Nebraska. It was in force for 65 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 22, 1999, 5:55 PM CDT (22:55 UTC)
Expired: May 22, 1999, 7:00 PM CDT
In force: 65 min
Issued by: NWS Hastings, NE
Area: Whole counties

Counties Hamilton County, NE, Polk County, NE, York County, NE

What was reported inside it

Time	Report	Where	Remark
May 22, 6:13 PM CDT	Hail 1	York, 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 22, 4:15 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 10.9 hours before the alert went out and 120 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1628 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 28 m²/s²
0-3 km storm-relative helicity: 95 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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.

NWS Hastings, NE wrote its last area forecast discussion before this severe thunderstorm warning went out at May 22, 2:35 PM CDT, 3 hours 20 minutes earlier.

Area forecast discussion, May 22, 2:35 PM CDT, 3 hours 20 minutes before

SOUTH CENTRAL NEBRASKA/NORTH CENTRAL KANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HASTINGS NE
235 PM CDT SAT MAY 22 1999

...STRONG CONVECTION THIS EVENING...THEN FAIR WX UNTIL AT LEAST
WED...

FORECAST APPEARS QUITE STRAIGHT FORWARD WITH THE MAIN CHALLENGES THE
TIMING OF THE COLD FRONT PASSAGE TONIGHT AND END OF PRECIPITATION.

SEVERE THREAT DEFINED WELL WITH CAPES GREATER THAN 2000 IN LOW
LEVEL MOISTURE FIELD EAST OF FRONT DEPICTED ON ETA AND WITH SHARP
MODIFIED LBF MORNING SOUNDING. EXPECT WATCHES ALONG ENTIRE LENGTH OF
FRONT ACROSS NEBRASKA AND KANSAS WITH MORE UNSTABLE AIR MASS OVER
KANSAS.

COLD FRONT WAS JUST EAST OF A MHE-ANW-OGA LINE WITH 18Z PRESSURE
RISES OF 2 MB AT RAP AND GCC.  ONLY MINOR DIFFERENCES NOTICED
IN MODELS WITH NW FLOW H5 S/W DRIVING FRONT NW-SE ACRS CWA. PREFER
NGM/S SLIGHTLY STRONGER WIND FIELD ESPECIALLY IN FRONTS WAKE. FRONT
SHOULD CROSS GRI & HSI JUST BEFORE MIDNIGHT AND SWEEP THROUGH
KANSAS CWA BEFORE DAWN.  WILL END TSTMS ABOUT AN HOUR AFTER FRONT.

SURFACE HIGH IN FRONT/S WAKE AND SMOOTH NW UPPER FLOW SHOULD KEEP
FAIR WEATHER SUNDAY THROUGH TUESDAY.  MOST EXTENDED MODELS DAMPEN
SW UPPER LOW AND SLIDE IT EAST INTO CENTRAL U.S. WED-THU.  THAT
FEATURE MAY PRODUCE THE NEXT ROUND OF CONVECTION.

.GID...NONE.

SCHURR

In the hours before

Local storm report, May 22, 2:51 PM CDT, 3 hours 4 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE  HASTINGS NE
251 PM CDT SAT MAY 22 1999

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0237 PM    ELYRIA                    NE   0.75 INCH HAIL
05/22/99   VALLEY

MORITZ

Local storm report, May 22, 2:51 PM CDT, 3 hours 4 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE  HASTINGS NE
251 PM CDT SAT MAY 22 1999

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0237 PM    ELYRIA                    NE   0.75 INCH HAIL
05/22/99   VALLEY

MORITZ

The office that day

Everything else NWS Hastings, NE issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 22, 10:57 AM CDT	Severe Thunderstorm Warning	GID	Harlan, Phelps	33 min
May 22, 11:16 AM CDT	Severe Thunderstorm Warning	GID	Kearney	44 min
May 22, 2:23 PM CDT	Severe Thunderstorm Warning	GID	Valley	52 min
May 22, 4:09 PM CDT	Severe Thunderstorm Warning	GID	Valley	51 min
May 22, 4:36 PM CDT	Severe Thunderstorm Warning	GID	Sherman	54 min
May 22, 5:00 PM CDT	Severe Thunderstorm Warning	GID	Howard	60 min
May 22, 5:19 PM CDT	Severe Thunderstorm Warning	GID	Buffalo, Hall	56 min
May 22, 5:19 PM CDT	Severe Thunderstorm Warning	GID	Dawson	56 min
May 22, 5:31 PM CDT	Severe Thunderstorm Warning	GID	Merrick	44 min
May 22, 6:11 PM CDT	Severe Thunderstorm Warning	GID	Dawson, Gosper, Phelps	49 min
May 22, 6:31 PM CDT	Severe Thunderstorm Warning	GID	Adams, Buffalo, Hall	59 min
May 22, 6:58 PM CDT	Severe Thunderstorm Warning	GID	Harlan, Phelps	62 min
May 22, 8:42 AM CDT	Severe Thunderstorm Warning	GID	Phillips, Rooks	33 min
May 22, 9:15 AM CDT	Severe Thunderstorm Warning	GID	Rooks	30 min
May 22, 9:42 AM CDT	Severe Thunderstorm Warning	GID	Rooks	33 min
May 22, 9:52 AM CDT	Severe Thunderstorm Warning	GID	Phillips	38 min
May 22, 10:29 AM CDT	Severe Thunderstorm Warning	GID	Phillips	31 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 1999 Every severe thunderstorm warning in 1999

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.