Alert archive / North Carolina / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 101, NWS Raleigh, NC

July 7, 202610 counties in North Carolina

NWS Raleigh, NC issued this severe thunderstorm warning at Jul 7, 2026, 7:31 PM EDT for 10 counties in North Carolina. It was in force for 59 min. 4 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jul 7, 2026, 7:31 PM EDT (23:31 UTC)
Expired
Jul 7, 2026, 8:30 PM EDT
In force
59 min
Issued by
NWS Raleigh, NC
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Chatham County, NC, Durham County, NC, Franklin County, NC, Granville County, NC, Harnett County, NC, Johnston County, NC, Lee County, NC, Vance County, NC, Wake County, NC, Warren County, NC

The radar

The Raleigh/Durham radar (KRAX), 31 km from the middle of the area, began a volume at 23:35 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

TimeReportWhereRemark
Jul 7, 7:41 PM EDTTSTM WND DMG2 E Rdu International, NCTree down over Pats Branch Dr.
Jul 7, 8:10 PM EDTTSTM WND DMG4 Wsw Falls Lake, NCtree down across Brereton Dr.
Jul 7, 8:17 PM EDTTSTM WND DMG2 Ssw Falls Lake, NCtree on home Ceremonial Ct.
Jul 7, 8:25 PM EDTTSTM WND DMG4 Nne Raleigh, NClarge tree knocked down power lines in front of house on Van Thomas Dr.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 4 storm reports to this severe thunderstorm warning; the first came 10 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 11.5 hours before the alert went out and 123 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-pSkew-T log-p diagram, Greensboro/Hi Pt, NC at 12:00Z on 2026-07-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 744 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Greensboro/Hi Pt, NC at 12:00Z on 2026-07-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 16 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
744 J/kg
Mixed-layer CIN
-75 J/kg
Mixed-layer LCL
824 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
16 m²/s²
0-3 km storm-relative helicity
24 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

433 
WUUS52 KRAH 072331
SVRRAH
NCC037-063-069-077-085-101-105-181-183-185-080030-
/O.NEW.KRAH.SV.W.0101.260707T2331Z-260708T0030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Raleigh NC
731 PM EDT Tue Jul 7 2026

The National Weather Service in Raleigh has issued a

* Severe Thunderstorm Warning for...
  Vance County in central North Carolina...
  Western Warren County in central North Carolina...
  Northeastern Harnett County in central North Carolina...
  Central Granville County in central North Carolina...
  Northeastern Lee County in central North Carolina...
  Wake County in central North Carolina...
  Northwestern Johnston County in central North Carolina...
  Southeastern Chatham County in central North Carolina...
  Southeastern Durham County in central North Carolina...
  Franklin County in central North Carolina...

* Until 830 PM EDT.

* At 731 PM EDT, severe thunderstorms were located along a line
  extending from 6 miles northwest of Henderson to 7 miles west of
  Wake Forest to 8 miles northeast of Sanford, moving east at 20 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Raleigh, Durham, Cary, Henderson, Oxford, Creedmoor, Louisburg,
  Warrenton, Wake Forest, and Garner.

This includes the following highways...
 Interstate 85 between Mile Markers 184 and 233.
 Interstate 40 between Mile Markers 278 and 316.
 Interstate 440 between Mile Markers 1 and 16.
 Interstate 540 between Mile Markers 0 and 24.
 US 1 between Mile Markers 80 and 101.
 NC Highway 264 between Mile Markers 20 and 22.
 the Durham Freeway between Mile Markers 2 and 6.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3589 7821 3583 7825 3546 7868 3552 7914
      3577 7900 3599 7883 3654 7855 3654 7805
TIME...MOT...LOC 2331Z 284DEG 17KT 3638 7849 3594 7865 3559 7912 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

CA
2 follow-up statements
971 
WWUS52 KRAH 080012
SVSRAH

Severe Weather Statement
National Weather Service Raleigh NC
812 PM EDT Tue Jul 7 2026

NCC037-063-085-105-181-185-080022-
/O.CAN.KRAH.SV.W.0101.000000T0000Z-260708T0030Z/
Vance NC-Warren NC-Harnett NC-Lee NC-Chatham NC-Durham NC-
812 PM EDT Tue Jul 7 2026

...THE SEVERE THUNDERSTORM WARNING FOR VANCE...WESTERN WARREN...
NORTHEASTERN HARNETT...NORTHEASTERN LEE...SOUTHEASTERN CHATHAM AND
SOUTHEASTERN DURHAM COUNTIES IS CANCELLED...

The severe thunderstorm which prompted the warning has weakened.
Therefore, the warning has been cancelled.

&&

LAT...LON 3617 7814 3589 7821 3583 7825 3563 7849
      3568 7897 3587 7891 3587 7883 3593 7880
      3592 7876 3594 7873 3601 7870 3602 7871
      3618 7853 3618 7849 3616 7846 3616 7842
      3618 7840
TIME...MOT...LOC 0012Z 278DEG 17KT 3585 7856 

$$

NCC069-077-101-183-080030-
/O.CON.KRAH.SV.W.0101.000000T0000Z-260708T0030Z/
Granville NC-Wake NC-Johnston NC-Franklin NC-
812 PM EDT Tue Jul 7 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM EDT
FOR SOUTHEASTERN GRANVILLE...WAKE...NORTH CENTRAL JOHNSTON AND
FRANKLIN COUNTIES...

At 812 PM EDT, a severe thunderstorm was located near Raleigh, moving
east at 20 mph.

HAZARD...60 mph wind gusts and heavy rainfall.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Raleigh, Cary, Louisburg, Wake Forest, Garner, Clayton, Zebulon,
Franklinton, Bunn, and RDU International.

This includes the following highways...
 Interstate 40 between Mile Markers 283 and 309.
 Interstate 440 between Mile Markers 1 and 16.
 Interstate 540 between Mile Markers 1 and 24.
 US 1 between Mile Markers 90 and 101.
 NC Highway 264 between Mile Markers 20 and 22.
 the Durham Freeway near Mile Marker 2.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3617 7814 3589 7821 3583 7825 3563 7849
      3568 7897 3587 7891 3587 7883 3593 7880
      3592 7876 3594 7873 3601 7870 3602 7871
      3618 7853 3618 7849 3616 7846 3616 7842
      3618 7840
TIME...MOT...LOC 0012Z 278DEG 17KT 3585 7856 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

CA
049 
WWUS52 KRAH 080030
SVSRAH

Severe Weather Statement
National Weather Service Raleigh NC
830 PM EDT Tue Jul 7 2026

NCC069-077-101-183-080040-
/O.EXP.KRAH.SV.W.0101.000000T0000Z-260708T0030Z/
Granville NC-Wake NC-Johnston NC-Franklin NC-
830 PM EDT Tue Jul 7 2026

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN GRANVILLE...
WAKE...NORTH CENTRAL JOHNSTON AND FRANKLIN COUNTIES HAS EXPIRED...

The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been allowed to expire.  However, gusty
winds and heavy rain are still possible with this thunderstorm.

&&

LAT...LON 3617 7814 3589 7821 3583 7825 3563 7849
      3568 7897 3587 7891 3587 7883 3593 7880
      3592 7876 3594 7873 3601 7870 3602 7871
      3618 7853 3618 7849 3616 7846 3616 7842
      3618 7840
TIME...MOT...LOC 0030Z 284DEG 17KT 3583 7846 

$$

CA

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 7, 2:43 PM EDT, 4 hours 48 minutes earlier. Its key messages:

  • As of 243 PM Tuesday... 1) Level 1 risk (marginal risk) for severe thunderstorms today along with a level 1 risk for flash flooding (marginal ERO) today and Wednesday - highest risk for flooding north and east of Raleigh. 2) Level 3 heat risk south and east of the Triad through Saturday.
Area forecast discussion, Jul 7, 2:43 PM EDT, 4 hours 48 minutes before
Area Forecast Discussion
National Weather Service Raleigh NC
243 PM EDT Tue Jul 7 2026

.WHAT HAS CHANGED...

* No major changes.

&&

.KEY MESSAGES...
As of 243 PM Tuesday...

1) Level 1 risk (marginal risk) for severe thunderstorms today along
with a level 1 risk for flash flooding (marginal ERO) today and
Wednesday - highest risk for flooding north and east of Raleigh.

2) Level 3 heat risk south and east of the Triad through Saturday.

&&

.DISCUSSION...
As of 243 PM Tuesday...

1) Level 1 risk (marginal risk) for severe thunderstorms today along
with a level 1 risk for flash flooding (marginal ERO) today and
Wednesday - highest risk for flooding north and east of Raleigh.

A moist and unstable air mass will remain in place across central
North Carolina through Wednesday as weak mid-level flow and a
backdoor cold front sagging south from Virginia provide a favorable
environment for scattered to numerous thunderstorms. Most
deterministic and convection-allowing guidance suggests the greatest
convective coverage will occur each afternoon and evening, with
outflow boundaries being the focus this afternoon and evening and
the backdoor front and any residual outflow boundaries serving as
primary foci for storm development on Wednesday. While widespread
organized severe weather is not expected, moderate instability will
support a threat for isolated damaging wind gusts with stronger
multicells. The severe weather risk should remain highest where
storms can interact with the southward-moving boundary, especially
across northern half of the forecast area.

The flash flood threat may ultimately become the greater concern.
Deep tropical moisture, slow storm motions, and the potential for
repeated development along the frontal zone could produce localized
heavy rainfall totals. The WPC Excessive Rainfall Outlook continues
to highlight the greatest concern across the northern and
northeastern portions of central North Carolina both today and
Wednesday, where the proximity of the backdoor front may favor more
persistent or training convection. Localized flash flooding will be
possible, particularly in urban areas and other flood-prone
locations where multiple rounds of heavy rainfall occur.

2) Level 3 heat risk south and east of the Triad through
Saturday.

Each day through the end of the work week is expected to trend a
degree or two hotter as afternoon temperatures climb into the lower
and middle 90s. Combined with continued high humidity, heat indices
will likely reach or exceed 100 degrees across much of central North
Carolina during this time. The experimental HeatRisk forecast shows
major (Level 3 of 4) continuing or perhaps expanding a bit each day
south and east of the Triad through Saturday. This level of heat can
be dangerous for anyone without adequate cooling or hydration,
especially those spending extended periods outdoors. A weak front
approaching late in the weekend should bring at least modest relief
beginning Sunday, with temperatures easing back closer to seasonal
normals.

&&

.AVIATION /18Z TUESDAY THROUGH SUNDAY/...
As of 243 PM Tuesday...

Through 18Z Wednesday: Scattered afternoon and evening showers and
tstms will result in brief IFR conditions in heavier storms, along
with gusty and erratic winds. Convection should diminish by late
evening, with mainly VFR overnight, although patchy MVFR fog or
stratus may develop toward daybreak where rainfall occurs, with the
best chance at KFAY and KRWI. Any sub-VFR restrictions should lift
by mid-morning Wednesday. In summary, outside of tstm activity, flt
conditions will be VFR with light and variable winds becoming light
from the NE overnight.

Wednesday Afternoon Through Sunday: A persistent summertime pattern
will support generally VFR conditions outside of daily afternoon and
evening convection through the end of the week. Brief MVFR/IFR
restrictions will be possible in thunderstorms each day, with
localized late night or early morning fog or stratus following
heavier rainfall. Outside of convection, no widespread or prolonged
aviation impacts are expected.

&&

.RAH WATCHES/WARNINGS/ADVISORIES...
Heat Advisory from noon today to 8 PM EDT this evening for NCZ042-
077-078-088-089.

&&

DISCUSSION...np
AVIATION...np
Hazardous weather outlook, Jul 7, 2:44 PM EDT, 4 hours 47 minutes before
Hazardous Weather Outlook
National Weather Service Raleigh NC
244 PM EDT Tue Jul 7 2026

NCZ042-077-078-088-089-081200-
Johnston-Harnett-Wayne-Cumberland-Sampson-
244 PM EDT Tue Jul 7 2026

...HEAT ADVISORY IN EFFECT FROM NOON TODAY TO 8 PM EDT THIS
EVENING...

This Hazardous Weather Outlook is for central North Carolina.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Heat Advisory.

In addition to the heat, scattered showers and storms are expected
later today. The strongest storms will be capable of producing
damaging winds and heavy rain, which could lead to isolated flooding
of low lying and poor drainage areas.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Another round of scattered showers and storms are possible
Wednesday, with damaging winds as the primary threat along with
locally heavy rainfall.

Following a brief retreat into the lower 90s, temperatures will once
again climb into the upper 90s late this week with dangerously hot
heat indices expected Thursday and Friday.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

NCZ007>011-021>028-038>041-043-073>076-083>086-081200-
Person-Granville-Vance-Warren-Halifax-Forsyth-Guilford-Alamance-
Orange-Durham-Franklin-Nash-Edgecombe-Davidson-Randolph-Chatham-Wake-
Wilson-Stanly-Montgomery-Moore-Lee-Anson-Richmond-Scotland-Hoke-
244 PM EDT Tue Jul 7 2026

This Hazardous Weather Outlook is for central North Carolina.

.DAY ONE...This afternoon and tonight.

Heat indices will approach 100 degrees across much of central NC
today. In addition to the heat, scattered showers and storms are
expected later today. The strongest storms will be capable of
producing damaging winds and heavy rain, which could lead to
isolated flooding of low lying and poor drainage areas.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Another round of scattered showers and storms are possible
Wednesday, with damaging winds as the primary threat along with
locally heavy rainfall.

Following a brief retreat into the lower 90s, temperatures will once
again climb into the upper 90s late this week with dangerously hot
heat indices expected Thursday and Friday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Local storm report, Jul 7, 7:16 PM EDT, 15 minutes before
Preliminary Local Storm Report
National Weather Service Raleigh NC
716 PM EDT Tue Jul 7 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0540 PM     Tstm Wnd Dmg     1 S Wade                35.15N 78.74W
07/07/2026                   Cumberland         NC   911 Call Center

            Tree down partially blocking road near the
            6800 block of Main Street.

0507 PM     Tstm Wnd Dmg     6 SE Falcon             35.14N 78.57W
07/07/2026                   Sampson            NC   911 Call Center

            Couple trees down near Tew Road and Baptist
            Chapel Road.

&&
Local storm report, Jul 7, 7:18 PM EDT, 13 minutes before
Preliminary Local Storm Report
National Weather Service Raleigh NC
718 PM EDT Tue Jul 7 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0704 PM     Tstm Wnd Dmg     2 SE Durham             35.96N 78.89W
07/07/2026                   Durham             NC   Utility Company

            Trees on powerlines on Capps St.

&&

CA
Local storm report, Jul 7, 7:19 PM EDT, 12 minutes before
Preliminary Local Storm Report
National Weather Service Raleigh NC
719 PM EDT Tue Jul 7 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0645 PM     Tstm Wnd Dmg     2 WNW Bahama            36.18N 78.91W
07/07/2026                   Durham             NC   Utility Company

            trees down on power equipment on Old Roxboro
            Rd.

&&

CA
Local storm report, Jul 7, 7:21 PM EDT, 10 minutes before
Preliminary Local Storm Report
National Weather Service Raleigh NC
721 PM EDT Tue Jul 7 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0642 PM     Tstm Wnd Dmg     1 N Sanford             35.49N 79.18W
07/07/2026                   Lee                NC   Utility Company

            trees down on powerlines on Poplar st.

&&

CA
Local storm report, Jul 7, 7:26 PM EDT, 5 minutes before
Preliminary Local Storm Report
National Weather Service Raleigh NC
726 PM EDT Tue Jul 7 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0647 PM     Tstm Wnd Dmg     1 NE Sanford            35.48N 79.17W
07/07/2026                   Lee                NC   Utility Company

            tree on power equipment.

&&

CA
Local storm report, Jul 7, 7:27 PM EDT, 4 minutes before
Preliminary Local Storm Report
National Weather Service Raleigh NC
727 PM EDT Tue Jul 7 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0717 PM     Flash Flood      3 NNE Durham            36.02N 78.90W
07/07/2026                   Durham             NC   Broadcast Media

            Entrance/exit ramps near intersection of
            Duke street and I-85 impassable due to
            flooding.

&&

AS

The office that day

Everything else NWS Raleigh, NC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 6, 8:06 PM EDTSpecial Weather StatementRAHDavidson, Randolph54 min
Jul 6, 9:27 PM EDTSpecial Weather StatementRAHDurham, Orange63 min
Jul 6, 9:59 PM EDTAreal Flood AdvisoryRAHDurham, Orange8 min
Jul 6, 10:01 PM EDTSpecial Weather StatementRAHWake59 min
Jul 6, 10:07 PM EDTFlash Flood WarningRAHDurham, Orange3 hr
Jul 6, 10:30 PM EDTAreal Flood AdvisoryRAHDurham14 min
Jul 6, 10:44 PM EDTFlash Flood WarningRAHDurham3 hr
Jul 6, 11:00 PM EDTSpecial Weather StatementRAHDurham, Franklin, Wake60 min
Jul 7, 1:33 AM EDTHeat AdvisoryRAHCumberland, Harnett, Johnston, Sampson, Wayne18 hr
Jul 7, 1:54 PM EDTSpecial Weather StatementRAHHarnett, Lee, Wake51 min
Jul 7, 2:00 PM EDTSpecial Weather StatementRAHGranville, Person60 min
Jul 7, 2:13 PM EDTSevere Thunderstorm WarningRAHDurham, Granville, Orange, Person47 min
Jul 7, 3:24 PM EDTSpecial Weather StatementRAHWake66 min
Jul 7, 3:32 PM EDTSpecial Weather StatementRAHJohnston28 min
Jul 7, 4:05 PM EDTSpecial Weather StatementRAHJohnston, Sampson, Wilson55 min
Jul 7, 4:11 PM EDTSevere Thunderstorm WarningRAHJohnston, Wayne, Wilson49 min
Jul 7, 4:43 PM EDTSevere Thunderstorm WarningRAHCumberland, Harnett, Johnston, Sampson, Wayne62 min
Jul 7, 4:52 PM EDTSpecial Weather StatementRAHOrange53 min
Jul 7, 5:27 PM EDTSpecial Weather StatementRAHCumberland, Harnett, Sampson, Wayne63 min
Jul 7, 5:31 PM EDTSevere Thunderstorm WarningRAHCumberland, Harnett, Johnston, Sampson59 min
Jul 7, 5:35 PM EDTAreal Flood AdvisoryRAHCumberland, Harnett, Johnston, Sampson33 min
Jul 7, 5:54 PM EDTSpecial Weather StatementRAHVance, Warren66 min
Jul 7, 6:08 PM EDTFlash Flood WarningRAHCumberland, Harnett, Sampson3 hr
Jul 7, 6:39 PM EDTSpecial Weather StatementRAHDurham, Granville, Wake66 min
Jul 7, 6:42 PM EDTSevere Thunderstorm WarningRAHChatham, Harnett, Lee, Moore40 min
Jul 7, 6:44 PM EDTSevere Thunderstorm WarningRAHChatham, Durham, Granville, Harnett, Lee, Orange and 3 more61 min
Jul 7, 7:12 PM EDTAreal Flood AdvisoryRAHChatham, Durham, Orange, Wake10 min
Jul 7, 7:22 PM EDTFlash Flood WarningRAHChatham, Durham, Orange, Wake3 hr

Nearby

Severe Thunderstorm Warnings in North Carolina, 2026Every severe thunderstorm warning in 2026

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.