Alert archive / Nebraska / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 127, NWS Hastings, NE
NWS Hastings, NE issued this severe thunderstorm warning at Jun 11, 2001, 7:06 PM CDT for Buffalo County, Sherman County, Nebraska. It was in force for 39 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
- Jun 11, 2001, 7:06 PM CDT (00:06 UTC)
- Expired
- Jun 11, 2001, 7:45 PM CDT
- In force
- 39 min
- Issued by
- NWS Hastings, NE
- Area
- Whole counties
Counties Buffalo County, NE, Sherman County, NE
The radar
The Grand Island radar (KUEX), 94 km from the middle of the area, began a volume at 00:07 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 11, 7:15 PM CDT | Hail 0.75 | Hazard, 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 nearest sounding before it
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.1 hours before the alert went out and 132 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
- 2851 J/kg
- Mixed-layer CIN
- -167 J/kg
- Mixed-layer LCL
- 1533 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 103 m²/s²
- 0-3 km storm-relative helicity
- 177 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 5.8
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 Jun 11, 3:09 PM CDT, 3 hours 57 minutes earlier.
Area forecast discussion, Jun 11, 3:09 PM CDT, 3 hours 57 minutes before
SOUTH CENTRAL NEBRASKA/NORTH CENTRAL KANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HASTINGS NE 309 PM CDT MON JUN 11 2001 ...POTENTIAL FOR SEVERE STORMS/HEAVY RAIN THE MAIN CONCERN... THE CAP CONTINUES TO BE THE PRIMARY PLAYER REGARDING POPS. LAST FEW HOURS OF VISIBLE SATELLITE LOOP HAS SHOWN HIGH BASED CONVECTION DEVELOPING OVER NORTHERN NEBRASKA...BUT ANYTHING THAT DEVELOPS ON THE SOUTHERN EDGE HAS QUICKLY DISSIPATED IN THE WARM MID LEVEL TEMPERATURES. 12Z NORTH PLATTE 700 MB TEMPERATURE WAS 15 DEGREES. HIGH CONVECTIVE TEMPERATURES NOT ALLOWING SURFACE BASED CUMULUS TO DEVELOP OVER MOST OF CENTRAL OR SOUTHERN NEBRASKA AS OF 1930Z. HOWEVER...THE SURFACE COLD FRONT WAS WELL DEFINED ON THE 18Z ANALYSIS...WITH STRONG CONVERGENCE ALONG THIS FRONT. BOUNDARY HAS BEEN FRONTOGENETIC...ADDING TO THE ASCENT AHEAD OF THE FRONT. AIRMASS IS EXTREMELY UNSTABLE...WITH 19Z LAPS OBJECTIVE ANALYSIS SHOWING CAPES OF 4000-5000 J/KG AHEAD OF FRONT. BROAD PERSISTENT VERTICAL MOTION IN THE VICINITY OF THE FRONT SHOULD REDUCE THE STRENGTH OF THE CAP SOME THIS AFTERNOON...AND THE FORCING ALONG THE FRONT WILL CONTINUE TO CHIP INTO THE WARMER AIR. PROGGED LFC HEIGHTS ON ETA MODEL ARE FAIRLY HIGH...SO IT COULD BE SEVERAL HOURS BEFORE AIR IS LIFTED SUFFICIENTLY. GENERAL THINKING IS STORMS WILL CONTINUE TO DEVELOP OVER NORTH CENTRAL/NORTHEAST NEBRASKA INTO THE EVENING HOURS...WITH INCREASING SOUTHERN PROPAGATION INTO THE LOW LEVEL JET. ETA SHOWS THE 850 WINDS UP TO 55 KNOTS BY 09Z...SO OVERNIGHT TONIGHT ANY MCS SHOULD WORK INTO MY NORTHERN AND EASTERN COUNTIES. POPS WILL RANGE FROM 70 NORTHEAST TO 30 SOUTHEAST...AND MAY KEEP SOUTHWEST COUNTIES DRY TONIGHT. THE FRONTAL POSITION TUESDAY WILL DETERMINE POPS FOR THE TUESDAY AND TUESDAY NIGHT TIME FRAME...BUT THERE IS DECENT MODEL AGREEMENT ON CYCLOGENISIS OVER SOUTHWEST NEBRASKA UNDER SOUTHWEST UPPER FLOW...WHICH WOULD SUPPORT PUSHING THE FRONT BACK INTO NORTHERN NEBRASKA. SIMILAR SCENARIO UNFOLDS TUESDAY...ALTHOUGH STRONGER FRONTOGENISIS WITH A STRONGER LOW LEVEL JET. POPS TUESDAY NIGHT WILL BE SIMILAR TO TONIGHT. WITH SURFACE DEWPOINTS AROUND 70 AND HIGH PRECIP WATERS...SOME CONCERN FOR TRAINING CELLS AND HEAVY RAIN TONIGHT. FLASH FLOOD GUIDANCE VALUES ARE MOSTLY AT OR ABOVE 2.0 INCHES...SO WILL NOT ISSUE FLASH FLOOD WATCH BUT MENTION HEAVY RAIN. HEAVY RAIN THREAT APPEARS EVEN HIGHER FOR TUESDAY NIGHT...ESPECIALLY FOR ANY AREAS THAT RECEIVE HEAVY RAIN TONIGHT. SEVERE THREAT ALSO EXISTS TODAY AND TONIGHT PER SWODY1/DY2...GIVEN SUCH HIGH INSTABILITY AND PROXIMITY TO BOUNDARY. MOST OF THE CWFA SHOULD REMAIN IN THE WARM SECTOR...BUT ANY SUPERCELLS ON THE COOL SECTOR WILL BE IN A STRONGLY SHEARED ENVIRONMENT. WITH UPPER LOW MIGRATING TO OUR NORTH AND FRONTAL POSITION IN THE AREA...PATTERN WILL REMAIN ACTIVE INTO WEDNESDAY NIGHT AT LEAST. .GID...NONE. NIETFELD
The office that day
Everything else NWS Hastings, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 11, 7:19 PM CDT | Severe Thunderstorm Warning | GID | Howard | 41 min |
Nearby
Severe Thunderstorm Warnings in Nebraska, 2001Every severe thunderstorm warning in 2001
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; radar from the NEXRAD Level II archive.