Alert archive / North Carolina / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 214, NWS Raleigh, NC
NWS Raleigh, NC issued this severe thunderstorm warning at Jul 26, 2009, 10:01 PM EDT for Guilford County, North Carolina. It was in force for 36 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 26, 2009, 10:01 PM EDT (02:01 UTC)
- Expired
- Jul 26, 2009, 10:37 PM EDT
- In force
- 36 min
- Issued by
- NWS Raleigh, NC
- Area
- Storm-based polygon
County Guilford County, NC
The radar
The Roanoke radar (KFCX), 114 km from the middle of the area, began a volume at 02:04 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
Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 2.0 hours before the alert went out and 10 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
- 523 J/kg
- Mixed-layer CIN
- -29 J/kg
- Mixed-layer LCL
- 1992 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 20 m²/s²
- 0-3 km storm-relative helicity
- 111 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
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 Raleigh, NC wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 26, 9:40 PM EDT, 21 minutes earlier.
Area forecast discussion, Jul 26, 9:40 PM EDT, 21 minutes before
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HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE RALEIGH NC 128 PM EDT SUN JUL 26 2009 NCZ007>011-021>028-038>043-073>078-083>086-088-089-271730- PERSON-GRANVILLE-VANCE-WARREN-HALIFAX-FORSYTH-GUILFORD-ALAMANCE- ORANGE-DURHAM-FRANKLIN-NASH-EDGECOMBE-DAVIDSON-RANDOLPH-CHATHAM-WAKE- JOHNSTON-WILSON-STANLY-MONTGOMERY-MOORE-LEE-HARNETT-WAYNE-ANSON- RICHMOND-SCOTLAND-HOKE-CUMBERLAND-SAMPSON- 128 PM EDT SUN JUL 26 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL NORTH CAROLINA. .DAY ONE...THIS AFTERNOON AND TONIGHT. SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP THIS AFTERNOON AND MOVE NORTHEAST ACROSS CENTRAL NORTH CAROLINA. THE STRONGEST THUNDERSTORMS ARE EXPECTED ACROSS THE EASTERN PIEDMONT...THE SANDHILLS AND COASTAL PLAIN WHERE THE ATMOSPHERE IS EXPECTED TO BE MORE UNSTABLE. A FEW OF THE STORMS MAY BECOME SEVERE... WITH DAMAGING WINDS AND LARGE HAIL. THE SHOWERS AND THUNDERSTORMS WILL LIKELY PRODUCE HEAVY RAIN WITH THE POTENTIAL FOR STORMS TO BACK BUILD AND DUMP VERY HEAVY RAIN REPEATEDLY OVER A LOCATION... CREATING THE RISK FOR FLASH FLOODING. IN ADDITION...SUFFICIENT INSTABILITY IS PRESENT AT MID AND UPPER LEVELS OF THE ATMOSPHERE TO SUPPORT AN UNUSUALLY LARGE AMOUNT OF LIGHTNING THIS AFTERNOON AND EVENING. THE THUNDERSTORMS WILL LIKELY CONTINUE INTO THE OVERNIGHT HOURS WITH STRONG THUNDERSTORMS STILL POSSIBLE INTO THE EARLY MORNING HOURS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SKYWARN SPOTTERS ARE ENCOURAGED TO REPORT ANY SEVERE OR SIGNIFICANT WEATHER ASSOCIATED WITH THESE STORMS. BLAES
In the hours before
Special weather statement, Jul 26, 4:29 PM EDT, 5 hours 32 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RALEIGH NC 429 PM EDT SUN JUL 26 2009 NCZ041-042-077-262130- HARNETT-JOHNSTON-WAKE- 429 PM EDT SUN JUL 26 2009 ...A STRONG THUNDERSTORM WILL MOVE ACROSS WAKE...JOHNSTON AND HARNETT COUNTIES THROUGH 530 PM EDT... AT 428 PM EDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM ABOUT 9 MILES NORTHWEST OF LILLINGTON...MOVING NORTHEAST AT 20 MPH. SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE DUNCAN... FUQUAY-VARINA... ANGIER... AND MAY PASS NEAR CLAYTON. GUSTY WINDS OF 30 TO 40 MPH...SMALL HAIL AND DANGEROUS CLOUD-TO-GROUND LIGHTNING CAN BE EXPECTED WITH THIS THUNDERSTORM. KEEP A CLOSE WATCH TO THE SKY IF YOU ARE OUTDOORS. DONT WAIT UNTIL RAIN BEGINS TO TAKE SHELTER. REMEMBER...LIGHTNING CAN STRIKE UP TO 15 MILES FROM THE THUNDERSTORM CLOUD. GO TO YOUR CAR OR A BUILDING AT THE FIRST SIGN OF A STORM OR WHEN THUNDER IS HEARD. GIH
Special weather statement, Jul 26, 9:13 PM EDT, 48 minutes before
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</html>Special weather statement, Jul 26, 9:16 PM EDT, 45 minutes before
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</html>Special weather statement, Jul 26, 9:51 PM EDT, 10 minutes before
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</html>The office that day
Everything else NWS Raleigh, NC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 26, 9:42 PM EDT | Severe Thunderstorm Warning | RAH | Franklin, Halifax, Nash | 48 min |
| Jul 27, 1:10 PM EDT | Severe Thunderstorm Warning | RAH | Anson, Montgomery, Richmond | 65 min |
| Jul 27, 1:56 PM EDT | Severe Thunderstorm Warning | RAH | Chatham, Lee, Moore, Randolph | 64 min |
| Jul 27, 2:10 PM EDT | Severe Thunderstorm Warning | RAH | Anson, Richmond, Scotland | 65 min |
| Jul 27, 2:32 PM EDT | Severe Thunderstorm Warning | RAH | Forsyth | 43 min |
| Jul 27, 2:47 PM EDT | Areal Flood Advisory | RAH | Anson, Richmond | 3 hr |
| Jul 27, 3:00 PM EDT | Severe Thunderstorm Warning | RAH | Chatham, Harnett, Lee, Moore | 60 min |
| Jul 27, 3:03 PM EDT | Severe Thunderstorm Warning | RAH | Vance, Warren | 57 min |
| Jul 27, 3:09 PM EDT | Severe Thunderstorm Warning | RAH | Chatham, Montgomery, Moore, Randolph | 66 min |
| Jul 27, 3:27 PM EDT | Severe Thunderstorm Warning | RAH | Chatham, Harnett, Lee, Wake | 63 min |
| Jul 27, 3:46 PM EDT | Severe Thunderstorm Warning | RAH | Cumberland, Harnett, Johnston, Sampson | 59 min |
| Jul 27, 3:57 PM EDT | Severe Thunderstorm Warning | RAH | Sampson, Wayne, Wilson | 49 min |
| Jul 27, 3:59 PM EDT | Severe Thunderstorm Warning | RAH | Halifax, Vance, Warren | 46 min |
| Jul 27, 4:09 PM EDT | Areal Flood Advisory | RAH | Vance, Warren | 109 min |
| Jul 27, 4:17 PM EDT | Severe Thunderstorm Warning | RAH | Johnston, Wake | 58 min |
| Jul 27, 4:29 PM EDT | Severe Thunderstorm Warning | RAH | Cumberland, Hoke | 76 min |
| Jul 27, 4:38 PM EDT | Areal Flood Advisory | RAH | Harnett | 105 min |
| Jul 27, 4:55 PM EDT | Severe Thunderstorm Warning | RAH | Granville, Person | 55 min |
| Jul 27, 5:09 PM EDT | Severe Thunderstorm Warning | RAH | Halifax, Warren | 36 min |
| Jul 27, 5:13 PM EDT | Severe Thunderstorm Warning | RAH | Sampson | 62 min |
| Jul 27, 5:28 PM EDT | Tornado Warning | RAH | Sampson | 32 min |
| Jul 27, 5:51 PM EDT | Severe Thunderstorm Warning | RAH | Halifax, Warren | 41 min |
| Jul 27, 6:34 PM EDT | Areal Flood Advisory | RAH | Halifax | 79 min |
| Jul 27, 7:11 PM EDT | Areal Flood Advisory | RAH | Guilford | 3 hr |
| Jul 27, 7:36 PM EDT | Severe Thunderstorm Warning | RAH | Davidson, Randolph | 54 min |
Nearby
Severe Thunderstorm Warnings in North Carolina, 2009Every severe thunderstorm warning in 2009
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.