Alert archive / Oklahoma / Special Weather Statements in 2017
Special Weather Statement, NWS Norman, OK
NWS Norman, OK issued this special weather statement at Aug 9, 2017, 6:07 PM CDT for Harper County, Oklahoma. It was in force for 23 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 9, 2017, 6:07 PM CDT (23:07 UTC)
- Expired
- Aug 9, 2017, 6:30 PM CDT
- In force
- 23 min
- Issued by
- NWS Norman, OK
County Harper County, OK
The nearest sounding before it
Dodge City, (KDDC), launched 12:00Z, 11.1 hours before the alert went out and 112 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
- 30 J/kg
- Mixed-layer CIN
- -62 J/kg
- Mixed-layer LCL
- 1017 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 121 m²/s²
- 0-3 km storm-relative helicity
- 197 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Norman, OK wrote its last area forecast discussion before this special weather statement went out at Aug 9, 3:47 PM CDT, 2 hours 20 minutes earlier.
Area forecast discussion, Aug 9, 3:47 PM CDT, 2 hours 20 minutes before
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</html>Hazardous weather outlook, Aug 9, 11:30 AM CDT, 6 hours 37 minutes before
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</html>In the hours before
Special weather statement, Aug 9, 3:40 PM CDT, 2 hours 27 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE Norman OK 340 PM CDT WED AUG 9 2017 OKZ009-010-014-015-092115- Woodward OK-Roger Mills OK-Dewey OK-Ellis OK- 340 PM CDT WED AUG 9 2017 ...SIGNIFICANT WEATHER ADVISORY FOR southwestern Woodward... northeastern Roger Mills...northwestern Dewey and southeastern Ellis Counties Until 415 PM CDT... AT 336 PM CDT, a strong thunderstorm was located near Harmon, moving east at 25 MPH. HAZARDS INCLUDE... Wind gusts to 40 MPH... Minor flooding in areas of poor drainage... Locations impacted include... Vici, Camargo and Harmon. LAT...LON 3604 9970 3620 9965 3618 9923 3592 9931 TIME...MOT...LOC 2036Z 282DEG 20KT 3611 9957 WR
Special weather statement, Aug 9, 6:07 PM CDT, 0 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE Norman OK 607 PM CDT WED AUG 9 2017 OKZ004-092330- Harper OK- 607 PM CDT WED AUG 9 2017 ...SIGNIFICANT WEATHER ADVISORY FOR southwestern Harper County Until 630 PM CDT... AT 558 PM CDT, a strong thunderstorm was located 5 miles east of Rosston, moving southeast at 35 MPH. HAZARDS INCLUDE... Wind gusts to 40 MPH... Minor flooding in areas of poor drainage... LAT...LON 3676 9945 3663 9980 3678 9998 3693 9987 TIME...MOT...LOC 2258Z 301DEG 28KT 3681 9984 WR
The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 3:40 PM CDT | Special Weather Statement | OUN | Ellis | 35 min |
| Aug 9, 3:49 PM CDT | Severe Thunderstorm Warning | OUN | Dewey, Ellis, Roger Mills | 26 min |
| Aug 9, 4:23 PM CDT | Severe Thunderstorm Warning | OUN | Dewey, Ellis, Roger Mills | |
| Aug 9, 4:24 PM CDT | Severe Thunderstorm Warning | OUN | Custer, Dewey, Roger Mills | 51 min |
| Aug 9, 6:30 PM CDT | Severe Thunderstorm Warning | OUN | Ellis, Harper | 30 min |
Nearby
Special Weather Statements in Oklahoma, 2017Every special weather statement in 2017
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.