Alert archive / Ohio / Special Weather Statements in 2017
Special Weather Statement, NWS Charleston, WV
NWS Charleston, WV issued this special weather statement at Feb 24, 2017, 11:03 PM EST for Perry County, Ohio. It was in force for 27 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
- Feb 24, 2017, 11:03 PM EST (04:03 UTC)
- Expired
- Feb 24, 2017, 11:30 PM EST
- In force
- 27 min
- Issued by
- NWS Charleston, WV
County Perry County, OH
The radar
The Cincinnati radar (KILN), 134 km from the middle of the area, began a volume at 04:06 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.
The nearest sounding before it
Cncnati-Daytn, OH (KILN), launched 00:00Z, 4.1 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
- 416 J/kg
- Mixed-layer CIN
- -55 J/kg
- Mixed-layer LCL
- 1770 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 110 m²/s²
- 0-3 km storm-relative helicity
- 138 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.9
The text
As transmitted.
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
</p>
</section>
</main>
<script src="index.js"></script>
</body>
</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 Charleston, WV wrote its last area forecast discussion before this special weather statement went out at Feb 24, 10:18 PM EST, 45 minutes earlier.
Area forecast discussion, Feb 24, 10:18 PM EST, 45 minutes before
Area Forecast Discussion National Weather Service Charleston WV 1018 PM EST Fri Feb 24 2017 .SYNOPSIS... A strong cold front crosses pre- and post- dawn Saturday morning, followed by cooler weather for the weekend. A couple systems next week with precipitation chances. && .NEAR TERM /THROUGH SATURDAY/... As of 1010 PM Friday... Prefrontal line of strong storms poised to cross into our southeast Ohio counties in the next 1 to 2 hours. Much of the activity over the last few hours has been strong to only marginally severe. The prospects for severe wx thankfully appear to be waning overnight with southeast Ohio standing the best chance for some damaging wind gusts in bowing segments within the line. As of 645 PM Friday... See latest PNS/RER for info today's records, February all time records, and all time record meteorological winter highs. Forecast generally in good shape. I tweaked hourly pops using latest HRRR as an aid. There is still a concern for locally damaging wind gusts after midnight across southeast Ohio, northeast Kentucky and western West Virginia. The mid level capping currently in place will erode overnight with the approach of the front. With steepening low level lapse rates along with the low dewpoint spreads in place...concern exist for a congealing QLCS bringing down strong downdrafts. As of 315 PM Friday... After a record breaking warm afternoon and a dry, mild evening, a strong cold front still appears on track to bring a line of showers and thunderstorms through the area just ahead of it overnight into Saturday morning. The main convective threat is wind damage as super cells that form upstream evolve into a fast moving squall line, but the hail and even tornado threat could not be entirely ruled out if the low level shear can give rise to sufficient mesoscale organization. Dry slot behind the cold front will bring a quick end to the showers and thunderstorms from west to east on Saturday, but wrap around precipitation will then spread into northern portions of the area later Saturday afternoon. These rain showers will start turning over to snow showers late, as much colder air advects in. Used a blend of primarily near term sources for hourly temperatures in the warm air ahead of the front tonight, and in the cold advection behind the front on Saturday. Lows tonight will be close to or equal to highs Saturday. && .SHORT TERM /SATURDAY NIGHT THROUGH SUNDAY/... As of 330 PM Friday... Cold air advection on W/NW flow will bring the chance for upslope snow showers across the mountains through early Sunday morning. Moisture is limited so accumulations will be very light with generally less than an inch. High pressure builds over the area on Sunday and although we remain dry it will be cool relatively speaking. High pressure should hold through most of the day Monday, however a southern stream system will approach Monday evening and showers enter SW West Virginia by 00Z Tuesday out ahead of a warm front. && .LONG TERM /SUNDAY NIGHT THROUGH FRIDAY/... As of 335 PM Friday... Zonal flow aloft will make for a progressive and active pattern next week. Our first system brings showers Monday night into Tuesday. The next system will arrive mid week as low pressure tracking across the Great Lakes drag a cold front through the region. Behind this colder air arrives again on NW flow and this will bring a chance for snow showers across the mountains towards the end of the work week. && .AVIATION /03Z SATURDAY THROUGH WEDNESDAY/... As of 645 PM Friday... A strong cold front will impact the area overnight tonight into early Saturday morning. A line of strong showers and thunderstorms just ahead of the cold front is timed to reach HTS near 08Z, PKB 09Z, CRW 10Z, CKB,EKN, and BKW around 11Z. Inserted tempo groups for HTS/PKB where 9 hour policy allows for IFR TSRA with wind gusts to 40 kts. I covered the remainder of the sites with 1 to 2 hour prevailing conditions of IFR gusty showers. Some of the winds may approach severe limits across HTS/PKB/CRW. Conditions will improve to VFR across the lowlands Saturday, as dry air and a rising frontal inversion increases mixing heights to about 5-6 kft. South to southwest surface flow will be gusty at times ahead of the cold front, shifting to west and remaining gusty behind the cold front early Saturday morning. Moderate south to southwest flow aloft ahead of the cold front into tonight will become moderate west behind the cold front on Saturday. FORECAST CONFIDENCE AND ALTERNATE SCENARIOS THROUGH 00Z SUNDAY... FORECAST CONFIDENCE: Medium to high. ALTERNATE SCENARIOS: May need to add TSRA to prevailing for remainder taf sites. Gusty winds will tend to vary, especially with the convection and the passage of the cold front overnight tonight into Saturday morning. EXPERIMENTAL TABLE OF FLIGHT CATEGORY OBJECTIVELY SHOWS CONSISTENCY OF WFO FORECAST TO AVAILABLE MODEL INFORMATION: H = HIGH: TAF CONSISTENT WITH ALL MODELS OR ALL BUT ONE MODEL. M = MEDIUM: TAF HAS VARYING LEVEL OF CONSISTENCY WITH MODELS. L = LOW: TAF INCONSISTENT WITH ALL MODELS OR ALL BUT ONE MODEL. DATE SAT 02/25/17 UTC 1HRLY 03 04 05 06 07 08 09 10 11 12 13 14 EST 1HRLY 22 23 00 01 02 03 04 05 06 07 08 09 CRW CONSISTENCY H H H H H H H M M H H L HTS CONSISTENCY H H H M H M M H H H H M BKW CONSISTENCY H H H H H H H H M L L L EKN CONSISTENCY H H H H H H H H H H M L PKB CONSISTENCY H H H H H H L H H H H M CKB CONSISTENCY H H H H H H H H H H H M AFTER 00Z SUNDAY... No widespread IFR conditions are expected at this time. && .RLX WATCHES/WARNINGS/ADVISORIES... WV...None. OH...None. KY...None. VA...None. && SYNOPSIS...TRM/MPK NEAR TERM...TRM/30 SHORT TERM...MPK LONG TERM...MPK AVIATION...30
Hazardous weather outlook, Feb 24, 3:46 PM EST, 7 hours 17 minutes before
Hazardous Weather Outlook National Weather Service Charleston WV 346 PM EST Fri Feb 24 2017 KYZ101>103-105-OHZ066-067-075-076-083>087-VAZ003-004-WVZ005>011- 013>020-024>031-033-034-515>520-252100- Greenup-Carter-Boyd-Lawrence KY-Perry-Morgan-Athens-Washington- Jackson OH-Vinton-Meigs-Gallia-Lawrence OH-Dickenson-Buchanan-Wayne- Cabell-Mason-Jackson WV-Wood-Pleasants-Tyler-Lincoln-Putnam-Kanawha- Roane-Wirt-Calhoun-Ritchie-Doddridge-Mingo-Logan-Boone-Clay-Braxton- Gilmer-Lewis-Harrison-McDowell-Wyoming-Northwest Raleigh- Southeast Raleigh-Northwest Fayette-Southeast Fayette- Northwest Nicholas-Southeast Nicholas- 346 PM EST Fri Feb 24 2017 This Hazardous Weather Outlook is for northeast Kentucky, southeast Ohio, southwest Virginia, and portions of central West Virginia, northern West Virginia, southeast West Virginia, southern West Virginia and western West Virginia. .DAY ONE...This Afternoon and Tonight. Strong to severe thunderstorms are possible late tonight through early Saturday morning. Damaging winds will be the biggest threat. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. WVZ032-039-040-521>526-252100- Taylor-Upshur-Barbour-Northwest Webster-Southeast Webster- Northwest Pocahontas-Southeast Pocahontas-Northwest Randolph- Southeast Randolph- 346 PM EST Fri Feb 24 2017 This Hazardous Weather Outlook is for portions of central West Virginia, northeast West Virginia and northern West Virginia. .DAY ONE...This Afternoon and Tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
In the hours before
Special weather statement, Feb 24, 11:03 PM EST, 0 minutes before
Special Weather Statement
National Weather Service Charleston WV
1103 PM EST FRI FEB 24 2017
OHZ066-250430-
Perry-
1103 PM EST FRI FEB 24 2017
...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NORTHWESTERN PERRY
COUNTY...
At 1102 PM EST, radar indicated strong thunderstorms were located
along a line extending from near Hebron to near Millersport to near
Lancaster. Movement was northeast at 60 mph.
Winds 45 to 50 mph and pea size hail are possible with these storms.
Locations impacted include...
Somerset, Harbor Hills, Thornville and Glenford.
LAT...LON 3993 8242 3992 8241 3991 8217 3982 8217
3982 8214 3972 8237 3974 8237 3974 8241
3983 8240 3984 8247 3992 8247 3993 8246
TIME...MOT...LOC 0402Z 230DEG 53KT 4001 8249 3988 8250 3973 8255
30The office that day
Everything else NWS Charleston, WV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 25, 1:04 AM EST | Severe Thunderstorm Warning | RLX | Cabell, Mason | 25 min |
| Feb 25, 2:26 AM EST | Special Weather Statement | RLX | Mason | 34 min |
| Feb 25, 2:37 AM EST | Special Weather Statement | RLX | Cabell, Lincoln, Wayne | 23 min |
| Feb 25, 2:54 AM EST | Special Weather Statement | RLX | Boone | 36 min |
| Feb 25, 3:00 AM EST | Special Weather Statement | RLX | Cabell, Jackson, Lincoln, Mason, Putnam | 30 min |
| Feb 25, 5:39 AM EST | Special Weather Statement | RLX | McDowell, Wyoming | 36 min |
| Feb 25, 6:13 AM EST | Special Weather Statement | RLX | Raleigh | 32 min |
| Feb 25, 6:41 AM EST | Special Weather Statement | RLX | Nicholas, Webster | 34 min |
| Feb 25, 7:18 AM EST | Special Weather Statement | RLX | Pocahontas | 27 min |
| Feb 25, 7:44 AM EST | Special Weather Statement | RLX | Pocahontas | 31 min |
| Feb 24, 11:59 PM EST | Special Weather Statement | RLX | Vinton | 31 min |
| Feb 25, 12:15 AM EST | Special Weather Statement | RLX | Jackson | 30 min |
| Feb 25, 12:25 AM EST | Special Weather Statement | RLX | Vinton | 35 min |
| Feb 25, 12:43 AM EST | Severe Thunderstorm Warning | RLX | Lawrence | 32 min |
| Feb 24, 11:32 PM EST | Special Weather Statement | RLX | Greenup | 43 min |
| Feb 25, 12:30 AM EST | Special Weather Statement | RLX | Boyd, Carter | 30 min |
| Feb 25, 5:09 AM EST | Special Weather Statement | RLX | Buchanan, Dickenson | 36 min |
Nearby
Special Weather Statements in Ohio, 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; radar from the NEXRAD Level II archive.